/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 10:45:21,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:45:21,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:45:21,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:45:21,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:45:21,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:45:21,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:45:21,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:45:21,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:45:21,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:45:21,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:45:21,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:45:21,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:45:21,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:45:21,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:45:21,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:45:21,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:45:21,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:45:21,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:45:21,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:45:21,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:45:21,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:45:21,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:45:21,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:45:21,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:45:21,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:45:21,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:45:21,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:45:21,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:45:21,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:45:21,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:45:21,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:45:21,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:45:21,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:45:21,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:45:21,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:45:21,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:45:21,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:45:21,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:45:21,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:45:21,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:45:21,692 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 10:45:21,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:45:21,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:45:21,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:45:21,708 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:45:21,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:45:21,708 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:45:21,708 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:45:21,708 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:45:21,709 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:45:21,709 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:45:21,709 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:45:21,709 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:45:21,709 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:45:21,710 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:45:21,710 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:21,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:45:21,710 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:45:21,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:45:21,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:45:21,711 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:45:21,711 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:45:21,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:45:21,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:45:21,711 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:45:21,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:45:21,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:45:21,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:45:21,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:45:21,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:45:21,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:45:21,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:45:21,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:45:21,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:45:21,892 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:45:21,893 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:45:21,954 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_4hD2Ll/tmp/d4689a2e75254ec59480b88c359d9bcc/FLAGe13c18c5d [2020-07-01 10:45:22,300 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:45:22,301 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:45:22,308 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_4hD2Ll/tmp/d4689a2e75254ec59480b88c359d9bcc/FLAGe13c18c5d [2020-07-01 10:45:22,697 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_4hD2Ll/tmp/d4689a2e75254ec59480b88c359d9bcc [2020-07-01 10:45:22,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:45:22,710 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:45:22,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:45:22,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:45:22,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:45:22,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:45:22" (1/1) ... [2020-07-01 10:45:22,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c4f0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22, skipping insertion in model container [2020-07-01 10:45:22,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:45:22" (1/1) ... [2020-07-01 10:45:22,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:45:22,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:45:22,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:45:22,962 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:45:22,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:45:22,991 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:45:22,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22 WrapperNode [2020-07-01 10:45:22,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:45:22,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:45:22,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:45:22,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:45:23,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22" (1/1) ... [2020-07-01 10:45:23,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22" (1/1) ... [2020-07-01 10:45:23,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:45:23,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:45:23,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:45:23,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:45:23,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22" (1/1) ... [2020-07-01 10:45:23,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22" (1/1) ... [2020-07-01 10:45:23,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22" (1/1) ... [2020-07-01 10:45:23,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22" (1/1) ... [2020-07-01 10:45:23,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22" (1/1) ... [2020-07-01 10:45:23,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22" (1/1) ... [2020-07-01 10:45:23,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22" (1/1) ... [2020-07-01 10:45:23,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:45:23,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:45:23,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:45:23,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:45:23,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:45:23,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:45:23,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:45:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-07-01 10:45:23,115 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-07-01 10:45:23,255 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:45:23,256 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-01 10:45:23,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:45:23 BoogieIcfgContainer [2020-07-01 10:45:23,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:45:23,260 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:45:23,260 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:45:23,262 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:45:23,263 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:45:23" (1/1) ... [2020-07-01 10:45:23,276 INFO L313 BlockEncoder]: Initial Icfg 17 locations, 21 edges [2020-07-01 10:45:23,277 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:45:23,278 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:45:23,278 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:45:23,279 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:45:23,280 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:45:23,281 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:45:23,281 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:45:23,296 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:45:23,310 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 10:45:23,314 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:45:23,316 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:45:23,326 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 10:45:23,328 INFO L70 RemoveSinkStates]: Removed 6 edges and 5 locations by removing sink states [2020-07-01 10:45:23,330 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:45:23,330 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:45:23,331 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:45:23,331 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:45:23,331 INFO L313 BlockEncoder]: Encoded RCFG 10 locations, 14 edges [2020-07-01 10:45:23,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:45:23 BasicIcfg [2020-07-01 10:45:23,332 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:45:23,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:45:23,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:45:23,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:45:23,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:45:22" (1/4) ... [2020-07-01 10:45:23,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222f44d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:45:23, skipping insertion in model container [2020-07-01 10:45:23,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22" (2/4) ... [2020-07-01 10:45:23,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222f44d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:45:23, skipping insertion in model container [2020-07-01 10:45:23,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:45:23" (3/4) ... [2020-07-01 10:45:23,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222f44d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:45:23, skipping insertion in model container [2020-07-01 10:45:23,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:45:23" (4/4) ... [2020-07-01 10:45:23,341 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:45:23,352 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:45:23,359 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:45:23,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:45:23,396 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:45:23,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:45:23,397 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:45:23,397 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:45:23,397 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:45:23,397 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:45:23,398 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:45:23,398 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:45:23,415 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-07-01 10:45:23,420 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:45:23,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-07-01 10:45:23,489 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:45:23,489 INFO L271 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-07-01 10:45:23,490 INFO L268 CegarLoopResult]: For program point fiboEXIT(lines 5 13) no Hoare annotation was computed. [2020-07-01 10:45:23,490 INFO L271 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: true [2020-07-01 10:45:23,490 INFO L271 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: true [2020-07-01 10:45:23,491 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-07-01 10:45:23,491 INFO L268 CegarLoopResult]: For program point L8(lines 8 12) no Hoare annotation was computed. [2020-07-01 10:45:23,491 INFO L268 CegarLoopResult]: For program point L6(lines 6 12) no Hoare annotation was computed. [2020-07-01 10:45:23,491 INFO L271 CegarLoopResult]: At program point fiboENTRY(lines 5 13) the Hoare annotation is: true [2020-07-01 10:45:23,491 INFO L268 CegarLoopResult]: For program point fiboFINAL(lines 5 13) no Hoare annotation was computed. [2020-07-01 10:45:23,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:45:23 BasicIcfg [2020-07-01 10:45:23,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:45:23,497 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:45:23,497 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:45:23,500 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:45:23,501 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:45:23,501 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:45:22" (1/5) ... [2020-07-01 10:45:23,502 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c4ff05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:45:23, skipping insertion in model container [2020-07-01 10:45:23,502 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:45:23,502 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:45:22" (2/5) ... [2020-07-01 10:45:23,503 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c4ff05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:45:23, skipping insertion in model container [2020-07-01 10:45:23,503 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:45:23,503 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:45:23" (3/5) ... [2020-07-01 10:45:23,503 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c4ff05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:45:23, skipping insertion in model container [2020-07-01 10:45:23,503 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:45:23,504 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:45:23" (4/5) ... [2020-07-01 10:45:23,504 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c4ff05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:45:23, skipping insertion in model container [2020-07-01 10:45:23,504 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:45:23,504 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:45:23" (5/5) ... [2020-07-01 10:45:23,506 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:45:23,533 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:45:23,533 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:45:23,533 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:45:23,533 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:45:23,533 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:45:23,534 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:45:23,534 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:45:23,534 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:45:23,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-07-01 10:45:23,557 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:45:23,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:45:23,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:45:23,565 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:45:23,565 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 10:45:23,565 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:45:23,565 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-07-01 10:45:23,567 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:45:23,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:45:23,567 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:45:23,567 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:45:23,568 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 10:45:23,573 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [41] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 5) InVars {} OutVars{ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~result~0] 11#L25true [52] L25-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_1|} AuxVars[] AssignedVars[fibo_#in~n]< 7#fiboENTRYtrue [2020-07-01 10:45:23,573 INFO L796 eck$LassoCheckResult]: Loop: 7#fiboENTRYtrue [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 12#L6true [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 6#L8true [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 10#L11true [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 7#fiboENTRYtrue [2020-07-01 10:45:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:23,579 INFO L82 PathProgramCache]: Analyzing trace with hash 2284, now seen corresponding path program 1 times [2020-07-01 10:45:23,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:23,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180852587] [2020-07-01 10:45:23,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:23,663 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:23,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:23,664 INFO L82 PathProgramCache]: Analyzing trace with hash 2319812, now seen corresponding path program 1 times [2020-07-01 10:45:23,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:23,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424353628] [2020-07-01 10:45:23,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:23,676 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:23,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:23,678 INFO L82 PathProgramCache]: Analyzing trace with hash 2110718255, now seen corresponding path program 1 times [2020-07-01 10:45:23,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:23,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212546079] [2020-07-01 10:45:23,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:23,695 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:23,777 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:23,778 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:23,778 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:23,778 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:23,779 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:45:23,779 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:23,779 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:23,779 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:23,779 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:45:23,779 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:23,780 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:23,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:23,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:23,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:23,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:23,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:23,887 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:23,888 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:23,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:23,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:23,905 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:23,905 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:23,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:23,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:23,945 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:23,946 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:23,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:23,980 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:23,985 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:23,985 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret0=0} Honda state: {fibo_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:24,019 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:24,020 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:24,024 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:24,024 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret1=0} Honda state: {fibo_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:24,058 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:24,058 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:24,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:45:24,097 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:24,134 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:45:24,136 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:24,136 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:24,136 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:24,136 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:24,137 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:45:24,137 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:24,137 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:24,137 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:24,137 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:45:24,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:24,137 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:24,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:24,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:24,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:24,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:24,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:24,205 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:24,210 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:24,217 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:24,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:24,220 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:24,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:24,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:24,222 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:24,224 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:24,224 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:24,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:24,261 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:24,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:24,264 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:24,264 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:24,264 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:24,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:24,265 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:24,265 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:24,270 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:24,304 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:24,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:24,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:24,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:24,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:24,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:24,308 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:24,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:24,311 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:24,345 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:24,347 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:24,347 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:24,347 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:24,347 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:24,348 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:24,348 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:24,349 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:24,351 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:24,386 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:24,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:24,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:24,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:24,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:24,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:24,390 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:24,390 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:24,394 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:45:24,399 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:45:24,399 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:24,404 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:45:24,404 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:45:24,404 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:45:24,405 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2020-07-01 10:45:24,438 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:45:24,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:24,485 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:45:24,487 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:24,508 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 10:45:24,509 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:45:24,575 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 10:45:24,581 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 10:45:24,582 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 10 states. Second operand 4 states. [2020-07-01 10:45:24,708 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 10 states.. Second operand 4 states. Result 56 states and 89 transitions. Complement of second has 24 states. [2020-07-01 10:45:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 10:45:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 10:45:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 26 transitions. [2020-07-01 10:45:24,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 10:45:24,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:24,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 6 letters. Loop has 4 letters. [2020-07-01 10:45:24,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:24,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 2 letters. Loop has 8 letters. [2020-07-01 10:45:24,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:24,726 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 89 transitions. [2020-07-01 10:45:24,732 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2020-07-01 10:45:24,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 42 states and 70 transitions. [2020-07-01 10:45:24,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2020-07-01 10:45:24,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2020-07-01 10:45:24,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 70 transitions. [2020-07-01 10:45:24,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:45:24,745 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 70 transitions. [2020-07-01 10:45:24,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 70 transitions. [2020-07-01 10:45:24,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-07-01 10:45:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-01 10:45:24,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2020-07-01 10:45:24,782 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2020-07-01 10:45:24,782 INFO L591 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2020-07-01 10:45:24,782 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 10:45:24,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 50 transitions. [2020-07-01 10:45:24,784 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2020-07-01 10:45:24,784 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:45:24,784 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:45:24,784 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-07-01 10:45:24,784 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 10:45:24,785 INFO L794 eck$LassoCheckResult]: Stem: 137#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 5) InVars {} OutVars{ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~result~0] 138#L25 [52] L25-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_1|} AuxVars[] AssignedVars[fibo_#in~n]< 156#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 155#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 139#L8 [60] L8-->L11: Formula: (> 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 135#L11 [2020-07-01 10:45:24,786 INFO L796 eck$LassoCheckResult]: Loop: 135#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 146#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 147#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 163#L8 [60] L8-->L11: Formula: (> 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 135#L11 [2020-07-01 10:45:24,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:24,786 INFO L82 PathProgramCache]: Analyzing trace with hash 68087685, now seen corresponding path program 1 times [2020-07-01 10:45:24,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:24,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665070940] [2020-07-01 10:45:24,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:45:24,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665070940] [2020-07-01 10:45:24,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:45:24,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:45:24,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141483265] [2020-07-01 10:45:24,823 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 10:45:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2487903, now seen corresponding path program 1 times [2020-07-01 10:45:24,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:24,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620957806] [2020-07-01 10:45:24,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:45:24,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620957806] [2020-07-01 10:45:24,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:45:24,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:45:24,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951938996] [2020-07-01 10:45:24,838 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 10:45:24,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:45:24,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:45:24,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:45:24,841 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. cyclomatic complexity: 20 Second operand 3 states. [2020-07-01 10:45:24,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:45:24,859 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2020-07-01 10:45:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:45:24,862 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 39 transitions. [2020-07-01 10:45:24,864 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:45:24,867 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 27 states and 37 transitions. [2020-07-01 10:45:24,867 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2020-07-01 10:45:24,867 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2020-07-01 10:45:24,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 37 transitions. [2020-07-01 10:45:24,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:45:24,868 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-07-01 10:45:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 37 transitions. [2020-07-01 10:45:24,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-07-01 10:45:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-01 10:45:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2020-07-01 10:45:24,872 INFO L711 BuchiCegarLoop]: Abstraction has 25 states and 34 transitions. [2020-07-01 10:45:24,872 INFO L591 BuchiCegarLoop]: Abstraction has 25 states and 34 transitions. [2020-07-01 10:45:24,872 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 10:45:24,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 34 transitions. [2020-07-01 10:45:24,874 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:45:24,874 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:45:24,874 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:45:24,875 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 10:45:24,875 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 10:45:24,875 INFO L794 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 5) InVars {} OutVars{ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~result~0] 209#L25 [52] L25-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_1|} AuxVars[] AssignedVars[fibo_#in~n]< 213#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 214#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 212#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 205#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 215#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 217#L6 [39] L6-->fiboFINAL: Formula: (and (= |v_fibo_#res_1| 0) (< v_fibo_~n_2 1)) InVars {fibo_~n=v_fibo_~n_2} OutVars{fibo_~n=v_fibo_~n_2, fibo_#res=|v_fibo_#res_1|} AuxVars[] AssignedVars[fibo_#res] 210#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 203#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 206#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 221#fiboENTRY [2020-07-01 10:45:24,876 INFO L796 eck$LassoCheckResult]: Loop: 221#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 225#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 223#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 219#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 221#fiboENTRY [2020-07-01 10:45:24,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:24,876 INFO L82 PathProgramCache]: Analyzing trace with hash -752229190, now seen corresponding path program 1 times [2020-07-01 10:45:24,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:24,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619466701] [2020-07-01 10:45:24,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:45:24,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619466701] [2020-07-01 10:45:24,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660388155] [2020-07-01 10:45:24,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:45:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:24,978 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 10:45:24,980 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:45:25,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 10:45:25,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-07-01 10:45:25,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952016513] [2020-07-01 10:45:25,004 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 10:45:25,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:25,005 INFO L82 PathProgramCache]: Analyzing trace with hash 2319812, now seen corresponding path program 2 times [2020-07-01 10:45:25,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:25,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916085928] [2020-07-01 10:45:25,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:25,013 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:25,069 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:25,069 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:25,069 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:25,069 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:25,070 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:45:25,070 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:25,070 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:25,070 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:25,070 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 10:45:25,070 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:25,070 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:25,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:25,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:25,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:25,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:25,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:25,130 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:25,130 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:25,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:25,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:25,140 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:25,140 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:25,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:25,174 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:25,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:45:25,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:25,289 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:45:25,292 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:25,292 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:25,292 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:25,292 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:25,292 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:45:25,293 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:25,293 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:25,293 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:25,293 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 10:45:25,293 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:25,293 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:25,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:25,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:25,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:25,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:25,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:25,341 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:25,342 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:25,345 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:25,347 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:25,348 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:25,348 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:25,348 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:25,348 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:25,349 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:25,349 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:25,351 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:25,386 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:25,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:25,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:25,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:25,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:25,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:25,390 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:25,390 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:25,393 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:45:25,397 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:45:25,397 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:25,402 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:45:25,403 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:45:25,403 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:45:25,403 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2020-07-01 10:45:25,434 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:45:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:25,488 INFO L264 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-01 10:45:25,489 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:25,523 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 10:45:25,524 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:45:25,611 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 10:45:25,611 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 3 loop predicates [2020-07-01 10:45:25,611 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 25 states and 34 transitions. cyclomatic complexity: 11 Second operand 5 states. [2020-07-01 10:45:25,757 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 25 states and 34 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 57 states and 80 transitions. Complement of second has 17 states. [2020-07-01 10:45:25,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-07-01 10:45:25,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 10:45:25,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 22 transitions. [2020-07-01 10:45:25,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 11 letters. Loop has 4 letters. [2020-07-01 10:45:25,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:25,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 15 letters. Loop has 4 letters. [2020-07-01 10:45:25,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:25,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 11 letters. Loop has 8 letters. [2020-07-01 10:45:25,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:25,761 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 80 transitions. [2020-07-01 10:45:25,764 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-07-01 10:45:25,766 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 42 states and 61 transitions. [2020-07-01 10:45:25,767 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2020-07-01 10:45:25,767 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2020-07-01 10:45:25,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 61 transitions. [2020-07-01 10:45:25,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:45:25,767 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 61 transitions. [2020-07-01 10:45:25,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 61 transitions. [2020-07-01 10:45:25,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-07-01 10:45:25,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-01 10:45:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2020-07-01 10:45:25,773 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-07-01 10:45:25,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:45:25,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-01 10:45:25,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-01 10:45:25,774 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand 8 states. [2020-07-01 10:45:25,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:45:25,843 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2020-07-01 10:45:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-01 10:45:25,845 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 48 transitions. [2020-07-01 10:45:25,847 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-01 10:45:25,848 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 38 states and 48 transitions. [2020-07-01 10:45:25,848 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-07-01 10:45:25,849 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-07-01 10:45:25,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 48 transitions. [2020-07-01 10:45:25,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:45:25,849 INFO L688 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-07-01 10:45:25,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 48 transitions. [2020-07-01 10:45:25,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-07-01 10:45:25,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-01 10:45:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2020-07-01 10:45:25,853 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2020-07-01 10:45:25,853 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2020-07-01 10:45:25,854 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 10:45:25,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 44 transitions. [2020-07-01 10:45:25,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-01 10:45:25,855 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:45:25,855 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:45:25,856 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 10:45:25,856 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 10:45:25,856 INFO L794 eck$LassoCheckResult]: Stem: 490#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 5) InVars {} OutVars{ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~result~0] 491#L25 [52] L25-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_1|} AuxVars[] AssignedVars[fibo_#in~n]< 505#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 511#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 510#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 502#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 509#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 516#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 517#L8 [43] L8-->fiboFINAL: Formula: (and (= 1 v_fibo_~n_4) (= |v_fibo_#res_2| 1)) InVars {fibo_~n=v_fibo_~n_4} OutVars{fibo_~n=v_fibo_~n_4, fibo_#res=|v_fibo_#res_2|} AuxVars[] AssignedVars[fibo_#res] 518#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 507#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 495#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 496#fiboENTRY [2020-07-01 10:45:25,857 INFO L796 eck$LassoCheckResult]: Loop: 496#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 497#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 494#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 488#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 499#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 500#L6 [39] L6-->fiboFINAL: Formula: (and (= |v_fibo_#res_1| 0) (< v_fibo_~n_2 1)) InVars {fibo_~n=v_fibo_~n_2} OutVars{fibo_~n=v_fibo_~n_2, fibo_#res=|v_fibo_#res_1|} AuxVars[] AssignedVars[fibo_#res] 493#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 487#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 489#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 496#fiboENTRY [2020-07-01 10:45:25,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:25,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1828550030, now seen corresponding path program 1 times [2020-07-01 10:45:25,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:25,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443194276] [2020-07-01 10:45:25,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:45:25,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443194276] [2020-07-01 10:45:25,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954026879] [2020-07-01 10:45:25,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:45:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:25,926 INFO L264 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 10:45:25,927 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:45:25,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 10:45:25,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-07-01 10:45:25,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936122815] [2020-07-01 10:45:25,942 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 10:45:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:25,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1211503941, now seen corresponding path program 1 times [2020-07-01 10:45:25,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:25,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081333890] [2020-07-01 10:45:25,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-01 10:45:25,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081333890] [2020-07-01 10:45:25,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:45:25,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-01 10:45:25,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062666839] [2020-07-01 10:45:25,975 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 10:45:25,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:45:25,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 10:45:25,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-01 10:45:25,976 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. cyclomatic complexity: 12 Second operand 5 states. [2020-07-01 10:45:26,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:45:26,019 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2020-07-01 10:45:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-01 10:45:26,021 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 46 transitions. [2020-07-01 10:45:26,022 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-01 10:45:26,023 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 34 states and 42 transitions. [2020-07-01 10:45:26,024 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2020-07-01 10:45:26,024 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2020-07-01 10:45:26,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 42 transitions. [2020-07-01 10:45:26,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:45:26,024 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-07-01 10:45:26,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 42 transitions. [2020-07-01 10:45:26,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-01 10:45:26,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-01 10:45:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-07-01 10:45:26,028 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-07-01 10:45:26,028 INFO L591 BuchiCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-07-01 10:45:26,028 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 10:45:26,028 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 40 transitions. [2020-07-01 10:45:26,029 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-01 10:45:26,029 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:45:26,029 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:45:26,030 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 10:45:26,031 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-07-01 10:45:26,031 INFO L794 eck$LassoCheckResult]: Stem: 622#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 5) InVars {} OutVars{ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~result~0] 623#L25 [52] L25-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_1|} AuxVars[] AssignedVars[fibo_#in~n]< 639#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 645#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 644#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 628#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 634#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 636#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 649#L8 [43] L8-->fiboFINAL: Formula: (and (= 1 v_fibo_~n_4) (= |v_fibo_#res_2| 1)) InVars {fibo_~n=v_fibo_~n_4} OutVars{fibo_~n=v_fibo_~n_4, fibo_#res=|v_fibo_#res_2|} AuxVars[] AssignedVars[fibo_#res] 648#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 642#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 625#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 631#fiboENTRY [2020-07-01 10:45:26,032 INFO L796 eck$LassoCheckResult]: Loop: 631#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 632#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 647#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 620#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 646#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 632#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 647#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 620#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 646#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 640#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 641#L8 [43] L8-->fiboFINAL: Formula: (and (= 1 v_fibo_~n_4) (= |v_fibo_#res_2| 1)) InVars {fibo_~n=v_fibo_~n_4} OutVars{fibo_~n=v_fibo_~n_4, fibo_#res=|v_fibo_#res_2|} AuxVars[] AssignedVars[fibo_#res] 650#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 619#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 621#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 631#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 633#L6 [39] L6-->fiboFINAL: Formula: (and (= |v_fibo_#res_1| 0) (< v_fibo_~n_2 1)) InVars {fibo_~n=v_fibo_~n_2} OutVars{fibo_~n=v_fibo_~n_2, fibo_#res=|v_fibo_#res_1|} AuxVars[] AssignedVars[fibo_#res] 626#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 630#fiboEXIT >[53] fiboEXIT-->L11-2: AOR: Formula: (= |v_fibo_#t~ret1_4| |v_fibo_#resOutParam_3|) InVars {fibo_#res=|v_fibo_#resOutParam_3|} OutVars{fibo_#t~ret1=|v_fibo_#t~ret1_4|} AuxVars[] AssignedVars[fibo_#t~ret1] LVA: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n] 637#L11-2 [46] L11-2-->fiboFINAL: Formula: (= |v_fibo_#res_3| (+ |v_fibo_#t~ret0_3| |v_fibo_#t~ret1_3|)) InVars {fibo_#t~ret0=|v_fibo_#t~ret0_3|, fibo_#t~ret1=|v_fibo_#t~ret1_3|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_2|, fibo_#t~ret1=|v_fibo_#t~ret1_2|, fibo_#res=|v_fibo_#res_3|} AuxVars[] AssignedVars[fibo_#t~ret0, fibo_#t~ret1, fibo_#res] 638#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 643#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 621#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 631#fiboENTRY [2020-07-01 10:45:26,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:26,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1828550030, now seen corresponding path program 2 times [2020-07-01 10:45:26,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:26,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29730522] [2020-07-01 10:45:26,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:45:26,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29730522] [2020-07-01 10:45:26,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589219201] [2020-07-01 10:45:26,087 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:45:26,107 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-01 10:45:26,107 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-01 10:45:26,108 INFO L264 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 10:45:26,109 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:45:26,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 10:45:26,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-07-01 10:45:26,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641559875] [2020-07-01 10:45:26,125 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 10:45:26,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:26,126 INFO L82 PathProgramCache]: Analyzing trace with hash 401387172, now seen corresponding path program 1 times [2020-07-01 10:45:26,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:26,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453444955] [2020-07-01 10:45:26,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:26,145 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:26,314 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:26,314 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:26,314 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:26,314 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:26,314 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:45:26,314 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:26,314 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:26,315 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:26,315 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 10:45:26,315 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:26,315 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:26,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:26,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:26,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:26,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:26,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:26,356 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:26,356 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:26,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:26,363 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:26,368 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:26,368 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret1=0} Honda state: {fibo_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:26,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:26,400 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:26,403 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:26,404 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:26,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:26,436 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:26,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:45:26,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:26,476 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:45:26,505 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:26,506 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:26,506 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:26,506 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:26,506 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:45:26,506 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:26,506 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:26,506 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:26,506 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 10:45:26,506 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:26,507 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:26,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:26,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:26,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:26,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:26,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:26,554 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:26,554 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:26,557 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:26,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:26,559 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:26,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:26,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:26,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:26,560 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:26,560 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:26,562 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:26,593 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:26,595 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:26,595 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:26,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:26,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:26,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:26,597 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:26,597 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:26,598 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:26,630 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:26,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:26,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:26,632 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:26,632 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:26,632 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:26,633 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:26,633 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:26,636 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:45:26,640 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:45:26,640 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:26,644 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:45:26,644 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:45:26,644 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:45:26,644 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2020-07-01 10:45:26,674 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:45:26,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:26,706 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-01 10:45:26,707 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:26,749 INFO L264 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-01 10:45:26,751 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-01 10:45:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:26,890 INFO L264 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-01 10:45:26,892 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:26,996 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 10:45:26,996 INFO L98 LoopCannibalizer]: 6 predicates before loop cannibalization 11 predicates after loop cannibalization [2020-07-01 10:45:26,996 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 11 loop predicates [2020-07-01 10:45:26,996 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 32 states and 40 transitions. cyclomatic complexity: 10 Second operand 8 states. [2020-07-01 10:45:29,061 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 32 states and 40 transitions. cyclomatic complexity: 10. Second operand 8 states. Result 8985 states and 14750 transitions. Complement of second has 3876 states. [2020-07-01 10:45:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 21 states 2 stem states 17 non-accepting loop states 1 accepting loop states [2020-07-01 10:45:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 10:45:29,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 114 transitions. [2020-07-01 10:45:29,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 114 transitions. Stem has 12 letters. Loop has 22 letters. [2020-07-01 10:45:29,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:29,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 114 transitions. Stem has 34 letters. Loop has 22 letters. [2020-07-01 10:45:29,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:29,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 114 transitions. Stem has 12 letters. Loop has 44 letters. [2020-07-01 10:45:29,071 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:29,074 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8985 states and 14750 transitions. [2020-07-01 10:45:29,248 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-07-01 10:45:29,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8985 states to 164 states and 222 transitions. [2020-07-01 10:45:29,253 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 127 [2020-07-01 10:45:29,254 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 137 [2020-07-01 10:45:29,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 164 states and 222 transitions. [2020-07-01 10:45:29,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:45:29,255 INFO L688 BuchiCegarLoop]: Abstraction has 164 states and 222 transitions. [2020-07-01 10:45:29,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states and 222 transitions. [2020-07-01 10:45:29,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 123. [2020-07-01 10:45:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-07-01 10:45:29,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 164 transitions. [2020-07-01 10:45:29,273 INFO L711 BuchiCegarLoop]: Abstraction has 123 states and 164 transitions. [2020-07-01 10:45:29,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:45:29,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-01 10:45:29,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-01 10:45:29,273 INFO L87 Difference]: Start difference. First operand 123 states and 164 transitions. Second operand 8 states. [2020-07-01 10:45:29,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:45:29,357 INFO L93 Difference]: Finished difference Result 130 states and 174 transitions. [2020-07-01 10:45:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-01 10:45:29,360 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 174 transitions. [2020-07-01 10:45:29,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-07-01 10:45:29,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 130 states and 174 transitions. [2020-07-01 10:45:29,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2020-07-01 10:45:29,365 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 103 [2020-07-01 10:45:29,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 130 states and 174 transitions. [2020-07-01 10:45:29,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:45:29,366 INFO L688 BuchiCegarLoop]: Abstraction has 130 states and 174 transitions. [2020-07-01 10:45:29,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states and 174 transitions. [2020-07-01 10:45:29,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2020-07-01 10:45:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-01 10:45:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 162 transitions. [2020-07-01 10:45:29,377 INFO L711 BuchiCegarLoop]: Abstraction has 122 states and 162 transitions. [2020-07-01 10:45:29,377 INFO L591 BuchiCegarLoop]: Abstraction has 122 states and 162 transitions. [2020-07-01 10:45:29,377 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 10:45:29,377 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 122 states and 162 transitions. [2020-07-01 10:45:29,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-07-01 10:45:29,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:45:29,379 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:45:29,380 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-07-01 10:45:29,380 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 10:45:29,381 INFO L794 eck$LassoCheckResult]: Stem: 14048#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 5) InVars {} OutVars{ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~result~0] 14049#L25 [52] L25-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_1|} AuxVars[] AssignedVars[fibo_#in~n]< 14068#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 14097#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 14094#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 14089#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 14092#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 14099#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 14096#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 14090#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 14092#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 14100#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 14104#L8 [43] L8-->fiboFINAL: Formula: (and (= 1 v_fibo_~n_4) (= |v_fibo_#res_2| 1)) InVars {fibo_~n=v_fibo_~n_4} OutVars{fibo_~n=v_fibo_~n_4, fibo_#res=|v_fibo_#res_2|} AuxVars[] AssignedVars[fibo_#res] 14103#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 14101#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 14102#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 14147#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 14110#L6 [39] L6-->fiboFINAL: Formula: (and (= |v_fibo_#res_1| 0) (< v_fibo_~n_2 1)) InVars {fibo_~n=v_fibo_~n_2} OutVars{fibo_~n=v_fibo_~n_2, fibo_#res=|v_fibo_#res_1|} AuxVars[] AssignedVars[fibo_#res] 14108#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 14109#fiboEXIT >[53] fiboEXIT-->L11-2: AOR: Formula: (= |v_fibo_#t~ret1_4| |v_fibo_#resOutParam_3|) InVars {fibo_#res=|v_fibo_#resOutParam_3|} OutVars{fibo_#t~ret1=|v_fibo_#t~ret1_4|} AuxVars[] AssignedVars[fibo_#t~ret1] LVA: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n] 14095#L11-2 [46] L11-2-->fiboFINAL: Formula: (= |v_fibo_#res_3| (+ |v_fibo_#t~ret0_3| |v_fibo_#t~ret1_3|)) InVars {fibo_#t~ret0=|v_fibo_#t~ret0_3|, fibo_#t~ret1=|v_fibo_#t~ret1_3|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_2|, fibo_#t~ret1=|v_fibo_#t~ret1_2|, fibo_#res=|v_fibo_#res_3|} AuxVars[] AssignedVars[fibo_#t~ret0, fibo_#t~ret1, fibo_#res] 14093#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 14088#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 14072#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 14073#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 14112#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 14119#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 14040#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 14062#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 14064#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 14152#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 14043#L11 [2020-07-01 10:45:29,381 INFO L796 eck$LassoCheckResult]: Loop: 14043#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 14062#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 14064#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 14152#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 14043#L11 [2020-07-01 10:45:29,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:29,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1299060066, now seen corresponding path program 1 times [2020-07-01 10:45:29,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:29,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239439309] [2020-07-01 10:45:29,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-01 10:45:29,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239439309] [2020-07-01 10:45:29,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473067044] [2020-07-01 10:45:29,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:45:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:29,526 INFO L264 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-01 10:45:29,528 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-01 10:45:29,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 10:45:29,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2020-07-01 10:45:29,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329491885] [2020-07-01 10:45:29,548 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 10:45:29,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:29,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2487902, now seen corresponding path program 3 times [2020-07-01 10:45:29,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:29,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677784404] [2020-07-01 10:45:29,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:29,554 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:29,595 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:29,595 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:29,595 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:29,595 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:29,595 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:45:29,596 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:29,596 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:29,596 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:29,596 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 10:45:29,596 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:29,596 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:29,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:29,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:29,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:29,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:29,647 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:29,647 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:29,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:29,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:29,655 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:29,655 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret0=0} Honda state: {fibo_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:29,689 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:29,690 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:29,693 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:29,693 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:29,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:29,726 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:29,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:45:29,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:32,826 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:45:32,829 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:32,829 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:32,829 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:32,830 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:32,830 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:45:32,830 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:32,830 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:32,830 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:32,830 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 10:45:32,830 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:32,830 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:32,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:32,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:32,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:32,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:32,901 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:32,901 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:32,904 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:32,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:32,906 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:32,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:32,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:32,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:32,907 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:32,907 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:32,909 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:32,941 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:32,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:32,943 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:32,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:32,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:32,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:32,945 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:32,945 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:32,949 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:45:32,951 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 10:45:32,952 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:32,956 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:45:32,957 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:45:32,957 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:45:32,957 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2020-07-01 10:45:32,987 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:45:33,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:33,052 INFO L264 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-01 10:45:33,055 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:33,087 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-01 10:45:33,094 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-01 10:45:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:33,108 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 10:45:33,109 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:45:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:33,162 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 10:45:33,163 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:33,218 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 10:45:33,218 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:33,242 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 5 predicates after loop cannibalization [2020-07-01 10:45:33,243 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 5 loop predicates [2020-07-01 10:45:33,243 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 122 states and 162 transitions. cyclomatic complexity: 43 Second operand 5 states. [2020-07-01 10:45:33,357 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 122 states and 162 transitions. cyclomatic complexity: 43. Second operand 5 states. Result 429 states and 538 transitions. Complement of second has 76 states. [2020-07-01 10:45:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 4 non-accepting loop states 2 accepting loop states [2020-07-01 10:45:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 10:45:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2020-07-01 10:45:33,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 31 letters. Loop has 4 letters. [2020-07-01 10:45:33,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:33,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 35 letters. Loop has 4 letters. [2020-07-01 10:45:33,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:33,361 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 31 letters. Loop has 8 letters. [2020-07-01 10:45:33,361 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:33,362 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 429 states and 538 transitions. [2020-07-01 10:45:33,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2020-07-01 10:45:33,373 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 429 states to 172 states and 234 transitions. [2020-07-01 10:45:33,373 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 113 [2020-07-01 10:45:33,374 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 121 [2020-07-01 10:45:33,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 172 states and 234 transitions. [2020-07-01 10:45:33,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:45:33,374 INFO L688 BuchiCegarLoop]: Abstraction has 172 states and 234 transitions. [2020-07-01 10:45:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states and 234 transitions. [2020-07-01 10:45:33,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 133. [2020-07-01 10:45:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-07-01 10:45:33,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 173 transitions. [2020-07-01 10:45:33,385 INFO L711 BuchiCegarLoop]: Abstraction has 133 states and 173 transitions. [2020-07-01 10:45:33,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:45:33,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-01 10:45:33,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-07-01 10:45:33,386 INFO L87 Difference]: Start difference. First operand 133 states and 173 transitions. Second operand 10 states. [2020-07-01 10:45:33,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:45:33,509 INFO L93 Difference]: Finished difference Result 97 states and 123 transitions. [2020-07-01 10:45:33,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-01 10:45:33,511 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 123 transitions. [2020-07-01 10:45:33,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-07-01 10:45:33,514 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 95 states and 121 transitions. [2020-07-01 10:45:33,514 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2020-07-01 10:45:33,515 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-07-01 10:45:33,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 121 transitions. [2020-07-01 10:45:33,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:45:33,515 INFO L688 BuchiCegarLoop]: Abstraction has 95 states and 121 transitions. [2020-07-01 10:45:33,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 121 transitions. [2020-07-01 10:45:33,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2020-07-01 10:45:33,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-01 10:45:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2020-07-01 10:45:33,520 INFO L711 BuchiCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-07-01 10:45:33,520 INFO L591 BuchiCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-07-01 10:45:33,520 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2020-07-01 10:45:33,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 107 transitions. [2020-07-01 10:45:33,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-07-01 10:45:33,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:45:33,521 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:45:33,522 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-07-01 10:45:33,522 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 10:45:33,523 INFO L794 eck$LassoCheckResult]: Stem: 15185#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 5) InVars {} OutVars{ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~result~0] 15186#L25 [52] L25-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_1|} AuxVars[] AssignedVars[fibo_#in~n]< 15207#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 15221#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 15220#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 15193#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 15201#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 15202#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 15192#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 15194#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 15219#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 15202#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 15192#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 15194#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 15219#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 15246#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 15224#L8 [43] L8-->fiboFINAL: Formula: (and (= 1 v_fibo_~n_4) (= |v_fibo_#res_2| 1)) InVars {fibo_~n=v_fibo_~n_4} OutVars{fibo_~n=v_fibo_~n_4, fibo_#res=|v_fibo_#res_2|} AuxVars[] AssignedVars[fibo_#res] 15222#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 15223#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 15183#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 15214#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 15261#L6 [39] L6-->fiboFINAL: Formula: (and (= |v_fibo_#res_1| 0) (< v_fibo_~n_2 1)) InVars {fibo_~n=v_fibo_~n_2} OutVars{fibo_~n=v_fibo_~n_2, fibo_#res=|v_fibo_#res_1|} AuxVars[] AssignedVars[fibo_#res] 15259#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 15182#fiboEXIT >[53] fiboEXIT-->L11-2: AOR: Formula: (= |v_fibo_#t~ret1_4| |v_fibo_#resOutParam_3|) InVars {fibo_#res=|v_fibo_#resOutParam_3|} OutVars{fibo_#t~ret1=|v_fibo_#t~ret1_4|} AuxVars[] AssignedVars[fibo_#t~ret1] LVA: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n] 15184#L11-2 [46] L11-2-->fiboFINAL: Formula: (= |v_fibo_#res_3| (+ |v_fibo_#t~ret0_3| |v_fibo_#t~ret1_3|)) InVars {fibo_#t~ret0=|v_fibo_#t~ret0_3|, fibo_#t~ret1=|v_fibo_#t~ret1_3|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_2|, fibo_#t~ret1=|v_fibo_#t~ret1_2|, fibo_#res=|v_fibo_#res_3|} AuxVars[] AssignedVars[fibo_#t~ret0, fibo_#t~ret1, fibo_#res] 15263#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 15249#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 15189#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 15203#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 15205#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 15206#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 15217#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 15243#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 15242#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 15241#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 15216#L11 [2020-07-01 10:45:33,523 INFO L796 eck$LassoCheckResult]: Loop: 15216#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 15235#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 15242#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 15241#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 15216#L11 [2020-07-01 10:45:33,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:33,524 INFO L82 PathProgramCache]: Analyzing trace with hash -487137989, now seen corresponding path program 2 times [2020-07-01 10:45:33,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:33,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042084643] [2020-07-01 10:45:33,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:33,642 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-01 10:45:33,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042084643] [2020-07-01 10:45:33,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176810390] [2020-07-01 10:45:33,643 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:45:33,674 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-01 10:45:33,674 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-01 10:45:33,675 INFO L264 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-01 10:45:33,678 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-01 10:45:33,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 10:45:33,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2020-07-01 10:45:33,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275832146] [2020-07-01 10:45:33,703 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 10:45:33,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:33,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2487902, now seen corresponding path program 4 times [2020-07-01 10:45:33,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:33,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325902018] [2020-07-01 10:45:33,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:33,708 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:33,752 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:33,752 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:33,752 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:33,752 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:33,752 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:45:33,752 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:33,753 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:33,753 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:33,753 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration7_Loop [2020-07-01 10:45:33,753 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:33,753 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:33,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:33,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:33,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:33,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:33,803 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:33,803 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:33,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:33,810 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:33,814 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:33,814 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:33,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:33,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:33,852 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:33,853 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret1=0} Honda state: {fibo_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:33,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:33,887 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:33,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:45:33,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:35,888 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:45:35,891 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:35,891 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:35,891 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:35,891 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:35,891 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:45:35,891 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:35,891 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:35,892 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:35,892 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration7_Loop [2020-07-01 10:45:35,892 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:35,892 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:35,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:35,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:35,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:35,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:35,936 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:35,936 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:35,940 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:35,942 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:35,943 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:35,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:35,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:35,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:35,944 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:35,944 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:35,946 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:35,978 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:35,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:35,980 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:35,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:35,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:35,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:35,981 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:35,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:35,983 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:36,015 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:36,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:36,017 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:36,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:36,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:36,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:36,018 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:36,018 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:36,022 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:45:36,025 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:45:36,026 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:36,028 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:45:36,028 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:45:36,028 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:45:36,028 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2020-07-01 10:45:36,058 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:45:36,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:36,110 INFO L264 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-01 10:45:36,111 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:36,135 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-01 10:45:36,138 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-01 10:45:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:36,151 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 10:45:36,151 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:45:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:36,195 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 10:45:36,195 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:36,244 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 10:45:36,245 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:36,264 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 5 predicates after loop cannibalization [2020-07-01 10:45:36,264 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 5 loop predicates [2020-07-01 10:45:36,265 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 85 states and 107 transitions. cyclomatic complexity: 24 Second operand 5 states. [2020-07-01 10:45:36,356 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 85 states and 107 transitions. cyclomatic complexity: 24. Second operand 5 states. Result 276 states and 345 transitions. Complement of second has 76 states. [2020-07-01 10:45:36,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 4 non-accepting loop states 2 accepting loop states [2020-07-01 10:45:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 10:45:36,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2020-07-01 10:45:36,357 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 35 letters. Loop has 4 letters. [2020-07-01 10:45:36,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:36,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 39 letters. Loop has 4 letters. [2020-07-01 10:45:36,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:36,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 35 letters. Loop has 8 letters. [2020-07-01 10:45:36,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:36,360 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 276 states and 345 transitions. [2020-07-01 10:45:36,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2020-07-01 10:45:36,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 276 states to 106 states and 142 transitions. [2020-07-01 10:45:36,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2020-07-01 10:45:36,365 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2020-07-01 10:45:36,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 142 transitions. [2020-07-01 10:45:36,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:45:36,366 INFO L688 BuchiCegarLoop]: Abstraction has 106 states and 142 transitions. [2020-07-01 10:45:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 142 transitions. [2020-07-01 10:45:36,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 89. [2020-07-01 10:45:36,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-07-01 10:45:36,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 113 transitions. [2020-07-01 10:45:36,371 INFO L711 BuchiCegarLoop]: Abstraction has 89 states and 113 transitions. [2020-07-01 10:45:36,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:45:36,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-01 10:45:36,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-01 10:45:36,371 INFO L87 Difference]: Start difference. First operand 89 states and 113 transitions. Second operand 12 states. [2020-07-01 10:45:36,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:45:36,568 INFO L93 Difference]: Finished difference Result 103 states and 131 transitions. [2020-07-01 10:45:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-01 10:45:36,569 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 131 transitions. [2020-07-01 10:45:36,571 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-07-01 10:45:36,572 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 103 states and 131 transitions. [2020-07-01 10:45:36,572 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2020-07-01 10:45:36,573 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2020-07-01 10:45:36,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 131 transitions. [2020-07-01 10:45:36,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:45:36,573 INFO L688 BuchiCegarLoop]: Abstraction has 103 states and 131 transitions. [2020-07-01 10:45:36,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 131 transitions. [2020-07-01 10:45:36,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2020-07-01 10:45:36,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-07-01 10:45:36,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 118 transitions. [2020-07-01 10:45:36,577 INFO L711 BuchiCegarLoop]: Abstraction has 95 states and 118 transitions. [2020-07-01 10:45:36,577 INFO L591 BuchiCegarLoop]: Abstraction has 95 states and 118 transitions. [2020-07-01 10:45:36,577 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2020-07-01 10:45:36,578 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 95 states and 118 transitions. [2020-07-01 10:45:36,578 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-07-01 10:45:36,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:45:36,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:45:36,580 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 6, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-07-01 10:45:36,580 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 10:45:36,581 INFO L794 eck$LassoCheckResult]: Stem: 16129#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 5) InVars {} OutVars{ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~result~0] 16130#L25 [52] L25-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_1|} AuxVars[] AssignedVars[fibo_#in~n]< 16147#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 16160#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 16159#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 16146#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 16161#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 16162#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 16163#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 16137#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 16142#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 16143#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 16136#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 16138#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 16158#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 16143#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 16136#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 16138#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 16158#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 16188#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 16166#L8 [43] L8-->fiboFINAL: Formula: (and (= 1 v_fibo_~n_4) (= |v_fibo_#res_2| 1)) InVars {fibo_~n=v_fibo_~n_4} OutVars{fibo_~n=v_fibo_~n_4, fibo_#res=|v_fibo_#res_2|} AuxVars[] AssignedVars[fibo_#res] 16164#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 16165#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 16127#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 16140#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 16141#L6 [39] L6-->fiboFINAL: Formula: (and (= |v_fibo_#res_1| 0) (< v_fibo_~n_2 1)) InVars {fibo_~n=v_fibo_~n_2} OutVars{fibo_~n=v_fibo_~n_2, fibo_#res=|v_fibo_#res_1|} AuxVars[] AssignedVars[fibo_#res] 16214#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 16126#fiboEXIT >[53] fiboEXIT-->L11-2: AOR: Formula: (= |v_fibo_#t~ret1_4| |v_fibo_#resOutParam_3|) InVars {fibo_#res=|v_fibo_#resOutParam_3|} OutVars{fibo_#t~ret1=|v_fibo_#t~ret1_4|} AuxVars[] AssignedVars[fibo_#t~ret1] LVA: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n] 16128#L11-2 [46] L11-2-->fiboFINAL: Formula: (= |v_fibo_#res_3| (+ |v_fibo_#t~ret0_3| |v_fibo_#t~ret1_3|)) InVars {fibo_#t~ret0=|v_fibo_#t~ret0_3|, fibo_#t~ret1=|v_fibo_#t~ret1_3|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_2|, fibo_#t~ret1=|v_fibo_#t~ret1_2|, fibo_#res=|v_fibo_#res_3|} AuxVars[] AssignedVars[fibo_#t~ret0, fibo_#t~ret1, fibo_#res] 16211#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 16191#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 16192#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 16205#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 16216#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 16215#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 16153#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 16185#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 16184#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 16183#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 16152#L11 [2020-07-01 10:45:36,581 INFO L796 eck$LassoCheckResult]: Loop: 16152#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 16177#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 16184#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 16183#L8 [59] L8-->L11: Formula: (< 1 v_fibo_~n_5) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 16152#L11 [2020-07-01 10:45:36,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:36,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1674102440, now seen corresponding path program 3 times [2020-07-01 10:45:36,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:36,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107837390] [2020-07-01 10:45:36,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 54 proven. 27 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-01 10:45:36,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107837390] [2020-07-01 10:45:36,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860360418] [2020-07-01 10:45:36,703 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:45:36,734 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-07-01 10:45:36,735 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-01 10:45:36,735 INFO L264 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-01 10:45:36,737 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:36,774 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 49 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-01 10:45:36,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 10:45:36,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2020-07-01 10:45:36,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084854333] [2020-07-01 10:45:36,775 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 10:45:36,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:36,776 INFO L82 PathProgramCache]: Analyzing trace with hash 2487902, now seen corresponding path program 5 times [2020-07-01 10:45:36,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:45:36,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211517773] [2020-07-01 10:45:36,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:45:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:45:36,781 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:45:36,821 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:36,821 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:36,821 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:36,821 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:36,821 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:45:36,821 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:36,821 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:36,822 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:36,822 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration8_Loop [2020-07-01 10:45:36,822 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:36,822 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:36,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:36,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:36,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:36,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:36,870 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:36,871 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:36,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:36,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:36,878 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:36,878 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret0=0} Honda state: {fibo_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:36,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:36,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:36,916 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:36,916 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret1=0} Honda state: {fibo_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:36,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:36,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:36,952 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:45:36,952 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:36,985 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:45:36,985 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:45:37,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:45:37,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:45:47,255 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:45:47,258 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:45:47,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:45:47,259 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:45:47,259 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:45:47,259 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:45:47,259 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:47,259 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:45:47,259 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:45:47,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration8_Loop [2020-07-01 10:45:47,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:45:47,259 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:45:47,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:47,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:47,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:47,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:45:47,330 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:45:47,330 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:47,335 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:47,339 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:47,340 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:47,340 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:47,340 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:47,340 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:47,341 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:47,341 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:47,342 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:47,374 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:47,375 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:47,375 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:47,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:47,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:47,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:47,376 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:47,377 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:47,378 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:47,410 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:47,411 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:47,412 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:47,412 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:47,412 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:47,412 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:47,413 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:47,413 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:47,414 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:47,446 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:45:47,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:45:47,448 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:45:47,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:45:47,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:45:47,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:45:47,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:45:47,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:45:47,454 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:45:47,458 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 10:45:47,458 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:45:47,463 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:45:47,463 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:45:47,464 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:45:47,464 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2020-07-01 10:45:47,493 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:45:47,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:45:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:47,555 INFO L264 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-01 10:45:47,557 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:47,580 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-01 10:45:47,583 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-01 10:45:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:47,592 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 10:45:47,593 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:45:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:47,636 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 10:45:47,637 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:45:47,695 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 10:45:47,696 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:45:47,718 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 5 predicates after loop cannibalization [2020-07-01 10:45:47,718 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 5 loop predicates [2020-07-01 10:45:47,718 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 95 states and 118 transitions. cyclomatic complexity: 25 Second operand 5 states. [2020-07-01 10:45:47,814 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 95 states and 118 transitions. cyclomatic complexity: 25. Second operand 5 states. Result 267 states and 331 transitions. Complement of second has 76 states. [2020-07-01 10:45:47,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 4 non-accepting loop states 2 accepting loop states [2020-07-01 10:45:47,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 10:45:47,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2020-07-01 10:45:47,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 39 letters. Loop has 4 letters. [2020-07-01 10:45:47,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:47,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 43 letters. Loop has 4 letters. [2020-07-01 10:45:47,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:47,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 39 letters. Loop has 8 letters. [2020-07-01 10:45:47,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:45:47,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 267 states and 331 transitions. [2020-07-01 10:45:47,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2020-07-01 10:45:47,823 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 267 states to 111 states and 144 transitions. [2020-07-01 10:45:47,824 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2020-07-01 10:45:47,824 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2020-07-01 10:45:47,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 144 transitions. [2020-07-01 10:45:47,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:45:47,825 INFO L688 BuchiCegarLoop]: Abstraction has 111 states and 144 transitions. [2020-07-01 10:45:47,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 144 transitions. [2020-07-01 10:45:47,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2020-07-01 10:45:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-01 10:45:47,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2020-07-01 10:45:47,829 INFO L711 BuchiCegarLoop]: Abstraction has 98 states and 123 transitions. [2020-07-01 10:45:47,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:45:47,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-01 10:45:47,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-07-01 10:45:47,829 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand 15 states. [2020-07-01 10:45:48,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:45:48,089 INFO L93 Difference]: Finished difference Result 124 states and 155 transitions. [2020-07-01 10:45:48,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-01 10:45:48,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 155 transitions. [2020-07-01 10:45:48,092 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:45:48,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 0 states and 0 transitions. [2020-07-01 10:45:48,093 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 10:45:48,093 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 10:45:48,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 10:45:48,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:45:48,093 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:45:48,093 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:45:48,093 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:45:48,093 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2020-07-01 10:45:48,094 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 10:45:48,094 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:45:48,094 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 10:45:48,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:45:48 BasicIcfg [2020-07-01 10:45:48,100 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:45:48,102 INFO L168 Benchmark]: Toolchain (without parser) took 25392.10 ms. Allocated memory was 649.6 MB in the beginning and 969.9 MB in the end (delta: 320.3 MB). Free memory was 556.3 MB in the beginning and 738.4 MB in the end (delta: -182.1 MB). Peak memory consumption was 138.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:45:48,103 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:45:48,103 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.97 ms. Allocated memory was 649.6 MB in the beginning and 687.3 MB in the end (delta: 37.7 MB). Free memory was 556.3 MB in the beginning and 650.8 MB in the end (delta: -94.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. [2020-07-01 10:45:48,104 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.16 ms. Allocated memory is still 687.3 MB. Free memory was 650.8 MB in the beginning and 649.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:45:48,104 INFO L168 Benchmark]: Boogie Preprocessor took 16.78 ms. Allocated memory is still 687.3 MB. Free memory was 649.4 MB in the beginning and 648.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:45:48,104 INFO L168 Benchmark]: RCFGBuilder took 217.82 ms. Allocated memory is still 687.3 MB. Free memory was 648.1 MB in the beginning and 632.4 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 50.3 GB. [2020-07-01 10:45:48,105 INFO L168 Benchmark]: BlockEncodingV2 took 72.31 ms. Allocated memory is still 687.3 MB. Free memory was 632.4 MB in the beginning and 628.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 50.3 GB. [2020-07-01 10:45:48,105 INFO L168 Benchmark]: TraceAbstraction took 162.56 ms. Allocated memory is still 687.3 MB. Free memory was 627.0 MB in the beginning and 617.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 50.3 GB. [2020-07-01 10:45:48,106 INFO L168 Benchmark]: BuchiAutomizer took 24603.44 ms. Allocated memory was 687.3 MB in the beginning and 969.9 MB in the end (delta: 282.6 MB). Free memory was 616.1 MB in the beginning and 738.4 MB in the end (delta: -122.3 MB). Peak memory consumption was 160.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:45:48,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 17 locations, 21 edges - StatisticsResult: Encoded RCFG 10 locations, 14 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 280.97 ms. Allocated memory was 649.6 MB in the beginning and 687.3 MB in the end (delta: 37.7 MB). Free memory was 556.3 MB in the beginning and 650.8 MB in the end (delta: -94.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 32.16 ms. Allocated memory is still 687.3 MB. Free memory was 650.8 MB in the beginning and 649.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 16.78 ms. Allocated memory is still 687.3 MB. Free memory was 649.4 MB in the beginning and 648.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 217.82 ms. Allocated memory is still 687.3 MB. Free memory was 648.1 MB in the beginning and 632.4 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 72.31 ms. Allocated memory is still 687.3 MB. Free memory was 632.4 MB in the beginning and 628.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 50.3 GB. * TraceAbstraction took 162.56 ms. Allocated memory is still 687.3 MB. Free memory was 627.0 MB in the beginning and 617.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 24603.44 ms. Allocated memory was 687.3 MB in the beginning and 969.9 MB in the end (delta: 282.6 MB). Free memory was 616.1 MB in the beginning and 738.4 MB in the end (delta: -122.3 MB). Peak memory consumption was 160.3 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 10 PreInvPairs, 10 NumberOfFragments, 4 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (7 trivial, 0 deterministic, 6 nondeterministic). One nondeterministic module has affine ranking function \old(n) and consists of 6 locations. One nondeterministic module has affine ranking function \old(n) and consists of 6 locations. One nondeterministic module has affine ranking function \old(n) and consists of 21 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 7 modules have a trivial ranking function, the largest among these consists of 15 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 24.5s and 9 iterations. TraceHistogramMax:8. Analysis of lassos took 19.3s. Construction of modules took 0.8s. Büchi inclusion checks took 3.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 12. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 163 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had 122 states and ocurred in iteration 5. Nontrivial modules had stage [6, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 10/23 HoareTripleCheckerStatistics: 156 SDtfs, 424 SDslu, 273 SDs, 0 SdLazy, 907 SolverSat, 377 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI2 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq175 hnf91 smp100 dnf100 smp100 tf111 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 14 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 15.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 10:45:19.409 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp/BenchExec_run_4hD2Ll/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:45:49.743 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check