YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 01:15:23,695 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 01:15:23,697 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 01:15:23,708 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 01:15:23,708 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 01:15:23,709 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 01:15:23,710 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 01:15:23,713 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 01:15:23,714 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 01:15:23,715 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 01:15:23,716 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 01:15:23,716 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 01:15:23,717 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 01:15:23,718 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 01:15:23,719 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 01:15:23,720 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 01:15:23,720 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 01:15:23,722 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 01:15:23,724 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 01:15:23,725 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 01:15:23,726 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 01:15:23,727 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 01:15:23,729 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 01:15:23,729 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 01:15:23,730 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 01:15:23,730 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 01:15:23,731 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 01:15:23,732 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 01:15:23,732 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 01:15:23,733 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 01:15:23,733 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 01:15:23,734 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 01:15:23,735 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 01:15:23,735 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 01:15:23,736 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 01:15:23,736 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 01:15:23,736 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 01:15:23,737 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 01:15:23,738 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 01:15:23,738 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 01:15:23,752 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 01:15:23,752 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 01:15:23,753 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 01:15:23,753 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 01:15:23,753 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 01:15:23,754 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 01:15:23,754 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 01:15:23,754 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 01:15:23,754 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 01:15:23,754 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 01:15:23,754 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 01:15:23,755 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 01:15:23,755 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 01:15:23,755 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 01:15:23,755 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:15:23,755 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 01:15:23,755 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 01:15:23,755 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 01:15:23,756 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 01:15:23,756 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 01:15:23,756 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 01:15:23,756 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 01:15:23,756 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 01:15:23,756 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 01:15:23,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 01:15:23,757 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 01:15:23,757 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 01:15:23,757 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 01:15:23,757 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 01:15:23,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 01:15:23,794 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 01:15:23,797 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 01:15:23,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 01:15:23,799 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 01:15:23,800 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 01:15:23,870 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/18e965ff636a4c73834218946ae5d769/FLAG4547b34c9 [2020-06-22 01:15:24,203 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 01:15:24,204 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 01:15:24,211 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/18e965ff636a4c73834218946ae5d769/FLAG4547b34c9 [2020-06-22 01:15:24,618 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/18e965ff636a4c73834218946ae5d769 [2020-06-22 01:15:24,630 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 01:15:24,632 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 01:15:24,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 01:15:24,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 01:15:24,637 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 01:15:24,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 01:15:24" (1/1) ... [2020-06-22 01:15:24,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e20146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24, skipping insertion in model container [2020-06-22 01:15:24,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 01:15:24" (1/1) ... [2020-06-22 01:15:24,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 01:15:24,667 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 01:15:24,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 01:15:24,836 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 01:15:24,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 01:15:24,934 INFO L195 MainTranslator]: Completed translation [2020-06-22 01:15:24,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24 WrapperNode [2020-06-22 01:15:24,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 01:15:24,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 01:15:24,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 01:15:24,936 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 01:15:24,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24" (1/1) ... [2020-06-22 01:15:24,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24" (1/1) ... [2020-06-22 01:15:24,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 01:15:24,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 01:15:24,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 01:15:24,969 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 01:15:24,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24" (1/1) ... [2020-06-22 01:15:24,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24" (1/1) ... [2020-06-22 01:15:24,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24" (1/1) ... [2020-06-22 01:15:24,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24" (1/1) ... [2020-06-22 01:15:24,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24" (1/1) ... [2020-06-22 01:15:24,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24" (1/1) ... [2020-06-22 01:15:24,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24" (1/1) ... [2020-06-22 01:15:24,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 01:15:24,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 01:15:24,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 01:15:24,987 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 01:15:24,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24" (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 [2020-06-22 01:15:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 01:15:25,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 01:15:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-06-22 01:15:25,060 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-06-22 01:15:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-06-22 01:15:25,061 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-06-22 01:15:25,207 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 01:15:25,208 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2020-06-22 01:15:25,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:15:25 BoogieIcfgContainer [2020-06-22 01:15:25,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 01:15:25,210 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 01:15:25,210 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 01:15:25,212 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 01:15:25,213 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:15:25" (1/1) ... [2020-06-22 01:15:25,228 INFO L313 BlockEncoder]: Initial Icfg 25 locations, 32 edges [2020-06-22 01:15:25,230 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 01:15:25,231 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 01:15:25,231 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 01:15:25,231 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 01:15:25,233 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 01:15:25,234 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 01:15:25,234 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 01:15:25,250 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 01:15:25,266 INFO L200 BlockEncoder]: SBE split 3 edges [2020-06-22 01:15:25,270 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 01:15:25,272 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 01:15:25,283 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-22 01:15:25,285 INFO L70 RemoveSinkStates]: Removed 6 edges and 5 locations by removing sink states [2020-06-22 01:15:25,287 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 01:15:25,287 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 01:15:25,287 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 01:15:25,288 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 01:15:25,288 INFO L313 BlockEncoder]: Encoded RCFG 18 locations, 26 edges [2020-06-22 01:15:25,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 01:15:25 BasicIcfg [2020-06-22 01:15:25,289 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 01:15:25,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 01:15:25,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 01:15:25,293 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 01:15:25,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 01:15:24" (1/4) ... [2020-06-22 01:15:25,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a815057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:15:25, skipping insertion in model container [2020-06-22 01:15:25,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24" (2/4) ... [2020-06-22 01:15:25,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a815057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:15:25, skipping insertion in model container [2020-06-22 01:15:25,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:15:25" (3/4) ... [2020-06-22 01:15:25,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a815057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:15:25, skipping insertion in model container [2020-06-22 01:15:25,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 01:15:25" (4/4) ... [2020-06-22 01:15:25,297 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 01:15:25,309 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 01:15:25,317 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 01:15:25,334 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 01:15:25,362 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 01:15:25,363 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 01:15:25,363 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 01:15:25,364 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 01:15:25,364 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 01:15:25,364 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 01:15:25,364 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 01:15:25,364 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 01:15:25,364 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 01:15:25,381 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-06-22 01:15:25,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 01:15:25,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-06-22 01:15:25,461 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 01:15:25,462 INFO L451 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: true [2020-06-22 01:15:25,462 INFO L451 ceAbstractionStarter]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-06-22 01:15:25,462 INFO L448 ceAbstractionStarter]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2020-06-22 01:15:25,462 INFO L448 ceAbstractionStarter]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2020-06-22 01:15:25,463 INFO L451 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: true [2020-06-22 01:15:25,463 INFO L451 ceAbstractionStarter]: At program point L23-1(line 23) the Hoare annotation is: true [2020-06-22 01:15:25,463 INFO L448 ceAbstractionStarter]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-06-22 01:15:25,463 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-06-22 01:15:25,464 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-06-22 01:15:25,464 INFO L451 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: true [2020-06-22 01:15:25,464 INFO L451 ceAbstractionStarter]: At program point L13-1(line 13) the Hoare annotation is: true [2020-06-22 01:15:25,464 INFO L448 ceAbstractionStarter]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2020-06-22 01:15:25,464 INFO L448 ceAbstractionStarter]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-06-22 01:15:25,465 INFO L451 ceAbstractionStarter]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-06-22 01:15:25,465 INFO L448 ceAbstractionStarter]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-06-22 01:15:25,465 INFO L448 ceAbstractionStarter]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-06-22 01:15:25,465 INFO L448 ceAbstractionStarter]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2020-06-22 01:15:25,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:15:25 BasicIcfg [2020-06-22 01:15:25,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 01:15:25,470 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 01:15:25,470 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 01:15:25,474 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 01:15:25,474 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:15:25,475 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 01:15:24" (1/5) ... [2020-06-22 01:15:25,475 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47c63886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 01:15:25, skipping insertion in model container [2020-06-22 01:15:25,476 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:15:25,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:15:24" (2/5) ... [2020-06-22 01:15:25,476 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47c63886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 01:15:25, skipping insertion in model container [2020-06-22 01:15:25,476 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:15:25,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:15:25" (3/5) ... [2020-06-22 01:15:25,477 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47c63886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 01:15:25, skipping insertion in model container [2020-06-22 01:15:25,477 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:15:25,477 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 01:15:25" (4/5) ... [2020-06-22 01:15:25,477 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47c63886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 01:15:25, skipping insertion in model container [2020-06-22 01:15:25,477 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:15:25,478 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:15:25" (5/5) ... [2020-06-22 01:15:25,479 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 01:15:25,507 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 01:15:25,507 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 01:15:25,508 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 01:15:25,508 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 01:15:25,508 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 01:15:25,508 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 01:15:25,508 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 01:15:25,508 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 01:15:25,508 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 01:15:25,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-06-22 01:15:25,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-06-22 01:15:25,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:15:25,537 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:15:25,544 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 01:15:25,544 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 01:15:25,544 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 01:15:25,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-06-22 01:15:25,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-06-22 01:15:25,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:15:25,547 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:15:25,547 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 01:15:25,547 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 01:15:25,553 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue [72] ULTIMATE.startENTRY-->L37: Formula: (= v_ULTIMATE.start_main_~x~0_1 2) InVars {} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~ret4=|v_ULTIMATE.start_main_#t~ret4_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret4, ULTIMATE.start_main_~result~0] 4#L37true [65] L37-->fibo1ENTRY: Formula: (= |v_fibo1_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo1_#in~n=|v_fibo1_#in~nInParam_1|} AuxVars[] AssignedVars[fibo1_#in~n]< 15#fibo1ENTRYtrue [2020-06-22 01:15:25,553 INFO L796 eck$LassoCheckResult]: Loop: 15#fibo1ENTRYtrue [73] fibo1ENTRY-->L8: Formula: (= v_fibo1_~n_7 |v_fibo1_#in~n_1|) InVars {fibo1_#in~n=|v_fibo1_#in~n_1|} OutVars{fibo1_#in~n=|v_fibo1_#in~n_1|, fibo1_~n=v_fibo1_~n_7} AuxVars[] AssignedVars[fibo1_~n] 18#L8true [84] L8-->L10: Formula: (>= v_fibo1_~n_2 1) InVars {fibo1_~n=v_fibo1_~n_2} OutVars{fibo1_~n=v_fibo1_~n_2} AuxVars[] AssignedVars[] 5#L10true [89] L10-->L13: Formula: (< v_fibo1_~n_4 1) InVars {fibo1_~n=v_fibo1_~n_4} OutVars{fibo1_~n=v_fibo1_~n_4} AuxVars[] AssignedVars[] 10#L13true [67] L13-->fibo2ENTRY: Formula: (= |v_fibo2_#in~nInParam_1| (+ v_fibo1_~n_8 (- 1))) InVars {fibo1_~n=v_fibo1_~n_8} OutVars{fibo2_#in~n=|v_fibo2_#in~nInParam_1|} AuxVars[] AssignedVars[fibo2_#in~n]< 16#fibo2ENTRYtrue [60] fibo2ENTRY-->L18: Formula: (= v_fibo2_~n_1 |v_fibo2_#in~n_1|) InVars {fibo2_#in~n=|v_fibo2_#in~n_1|} OutVars{fibo2_~n=v_fibo2_~n_1, fibo2_#in~n=|v_fibo2_#in~n_1|} AuxVars[] AssignedVars[fibo2_~n] 20#L18true [87] L18-->L20: Formula: (>= v_fibo2_~n_3 1) InVars {fibo2_~n=v_fibo2_~n_3} OutVars{fibo2_~n=v_fibo2_~n_3} AuxVars[] AssignedVars[] 19#L20true [93] L20-->L23: Formula: (> 1 v_fibo2_~n_5) InVars {fibo2_~n=v_fibo2_~n_5} OutVars{fibo2_~n=v_fibo2_~n_5} AuxVars[] AssignedVars[] 3#L23true [52] L23-->fibo1ENTRY: Formula: (= |v_fibo1_#in~nInParam_2| (+ v_fibo2_~n_8 (- 1))) InVars {fibo2_~n=v_fibo2_~n_8} OutVars{fibo1_#in~n=|v_fibo1_#in~nInParam_2|} AuxVars[] AssignedVars[fibo1_#in~n]< 15#fibo1ENTRYtrue [2020-06-22 01:15:25,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:15:25,559 INFO L82 PathProgramCache]: Analyzing trace with hash 3258, now seen corresponding path program 1 times [2020-06-22 01:15:25,561 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:15:25,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:15:25,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:15:25,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:15:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:15:25,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:15:25,631 INFO L82 PathProgramCache]: Analyzing trace with hash 716290632, now seen corresponding path program 1 times [2020-06-22 01:15:25,631 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:15:25,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:15:25,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:15:25,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:15:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 01:15:25,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 01:15:25,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 01:15:25,680 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-06-22 01:15:25,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 01:15:25,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 01:15:25,697 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2020-06-22 01:15:25,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 01:15:25,733 INFO L93 Difference]: Finished difference Result 20 states and 28 transitions. [2020-06-22 01:15:25,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 01:15:25,737 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2020-06-22 01:15:25,740 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-06-22 01:15:25,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 20 states and 28 transitions. [2020-06-22 01:15:25,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2020-06-22 01:15:25,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2020-06-22 01:15:25,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 28 transitions. [2020-06-22 01:15:25,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 01:15:25,752 INFO L706 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2020-06-22 01:15:25,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 28 transitions. [2020-06-22 01:15:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-06-22 01:15:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-06-22 01:15:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2020-06-22 01:15:25,785 INFO L729 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-06-22 01:15:25,785 INFO L609 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-06-22 01:15:25,786 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 01:15:25,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2020-06-22 01:15:25,787 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-06-22 01:15:25,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:15:25,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:15:25,787 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 01:15:25,788 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 01:15:25,788 INFO L794 eck$LassoCheckResult]: Stem: 61#ULTIMATE.startENTRY [72] ULTIMATE.startENTRY-->L37: Formula: (= v_ULTIMATE.start_main_~x~0_1 2) InVars {} OutVars{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_#t~ret4=|v_ULTIMATE.start_main_#t~ret4_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret4, ULTIMATE.start_main_~result~0] 54#L37 [65] L37-->fibo1ENTRY: Formula: (= |v_fibo1_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo1_#in~n=|v_fibo1_#in~nInParam_1|} AuxVars[] AssignedVars[fibo1_#in~n]< 50#fibo1ENTRY [2020-06-22 01:15:25,789 INFO L796 eck$LassoCheckResult]: Loop: 50#fibo1ENTRY [73] fibo1ENTRY-->L8: Formula: (= v_fibo1_~n_7 |v_fibo1_#in~n_1|) InVars {fibo1_#in~n=|v_fibo1_#in~n_1|} OutVars{fibo1_#in~n=|v_fibo1_#in~n_1|, fibo1_~n=v_fibo1_~n_7} AuxVars[] AssignedVars[fibo1_~n] 62#L8 [84] L8-->L10: Formula: (>= v_fibo1_~n_2 1) InVars {fibo1_~n=v_fibo1_~n_2} OutVars{fibo1_~n=v_fibo1_~n_2} AuxVars[] AssignedVars[] 55#L10 [90] L10-->L13: Formula: (> v_fibo1_~n_4 1) InVars {fibo1_~n=v_fibo1_~n_4} OutVars{fibo1_~n=v_fibo1_~n_4} AuxVars[] AssignedVars[] 48#L13 [67] L13-->fibo2ENTRY: Formula: (= |v_fibo2_#in~nInParam_1| (+ v_fibo1_~n_8 (- 1))) InVars {fibo1_~n=v_fibo1_~n_8} OutVars{fibo2_#in~n=|v_fibo2_#in~nInParam_1|} AuxVars[] AssignedVars[fibo2_#in~n]< 59#fibo2ENTRY [60] fibo2ENTRY-->L18: Formula: (= v_fibo2_~n_1 |v_fibo2_#in~n_1|) InVars {fibo2_#in~n=|v_fibo2_#in~n_1|} OutVars{fibo2_~n=v_fibo2_~n_1, fibo2_#in~n=|v_fibo2_#in~n_1|} AuxVars[] AssignedVars[fibo2_~n] 63#L18 [87] L18-->L20: Formula: (>= v_fibo2_~n_3 1) InVars {fibo2_~n=v_fibo2_~n_3} OutVars{fibo2_~n=v_fibo2_~n_3} AuxVars[] AssignedVars[] 64#L20 [93] L20-->L23: Formula: (> 1 v_fibo2_~n_5) InVars {fibo2_~n=v_fibo2_~n_5} OutVars{fibo2_~n=v_fibo2_~n_5} AuxVars[] AssignedVars[] 47#L23 [52] L23-->fibo1ENTRY: Formula: (= |v_fibo1_#in~nInParam_2| (+ v_fibo2_~n_8 (- 1))) InVars {fibo2_~n=v_fibo2_~n_8} OutVars{fibo1_#in~n=|v_fibo1_#in~nInParam_2|} AuxVars[] AssignedVars[fibo1_#in~n]< 50#fibo1ENTRY [2020-06-22 01:15:25,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:15:25,789 INFO L82 PathProgramCache]: Analyzing trace with hash 3258, now seen corresponding path program 2 times [2020-06-22 01:15:25,789 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:15:25,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:15:25,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:15:25,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:15:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:15:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:15:25,796 INFO L82 PathProgramCache]: Analyzing trace with hash 744919783, now seen corresponding path program 1 times [2020-06-22 01:15:25,796 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:15:25,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:15:25,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,797 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 01:15:25,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:15:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 01:15:25,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 01:15:25,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 01:15:25,812 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-06-22 01:15:25,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 01:15:25,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 01:15:25,813 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-06-22 01:15:25,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 01:15:25,829 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2020-06-22 01:15:25,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 01:15:25,830 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 27 transitions. [2020-06-22 01:15:25,832 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-06-22 01:15:25,833 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 20 states and 27 transitions. [2020-06-22 01:15:25,833 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2020-06-22 01:15:25,834 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2020-06-22 01:15:25,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2020-06-22 01:15:25,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 01:15:25,835 INFO L706 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2020-06-22 01:15:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2020-06-22 01:15:25,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-06-22 01:15:25,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-06-22 01:15:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2020-06-22 01:15:25,838 INFO L729 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-06-22 01:15:25,838 INFO L609 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-06-22 01:15:25,838 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 01:15:25,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2020-06-22 01:15:25,839 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-06-22 01:15:25,839 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:15:25,839 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:15:25,840 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 01:15:25,840 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 01:15:25,840 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY [72] ULTIMATE.startENTRY-->L37: Formula: (= v_ULTIMATE.start_main_~x~0_1 2) InVars {} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~ret4=|v_ULTIMATE.start_main_#t~ret4_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret4, ULTIMATE.start_main_~result~0] 95#L37 [65] L37-->fibo1ENTRY: Formula: (= |v_fibo1_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo1_#in~n=|v_fibo1_#in~nInParam_1|} AuxVars[] AssignedVars[fibo1_#in~n]< 94#fibo1ENTRY [2020-06-22 01:15:25,841 INFO L796 eck$LassoCheckResult]: Loop: 94#fibo1ENTRY [73] fibo1ENTRY-->L8: Formula: (= v_fibo1_~n_7 |v_fibo1_#in~n_1|) InVars {fibo1_#in~n=|v_fibo1_#in~n_1|} OutVars{fibo1_#in~n=|v_fibo1_#in~n_1|, fibo1_~n=v_fibo1_~n_7} AuxVars[] AssignedVars[fibo1_~n] 106#L8 [84] L8-->L10: Formula: (>= v_fibo1_~n_2 1) InVars {fibo1_~n=v_fibo1_~n_2} OutVars{fibo1_~n=v_fibo1_~n_2} AuxVars[] AssignedVars[] 96#L10 [90] L10-->L13: Formula: (> v_fibo1_~n_4 1) InVars {fibo1_~n=v_fibo1_~n_4} OutVars{fibo1_~n=v_fibo1_~n_4} AuxVars[] AssignedVars[] 92#L13 [67] L13-->fibo2ENTRY: Formula: (= |v_fibo2_#in~nInParam_1| (+ v_fibo1_~n_8 (- 1))) InVars {fibo1_~n=v_fibo1_~n_8} OutVars{fibo2_#in~n=|v_fibo2_#in~nInParam_1|} AuxVars[] AssignedVars[fibo2_#in~n]< 103#fibo2ENTRY [60] fibo2ENTRY-->L18: Formula: (= v_fibo2_~n_1 |v_fibo2_#in~n_1|) InVars {fibo2_#in~n=|v_fibo2_#in~n_1|} OutVars{fibo2_~n=v_fibo2_~n_1, fibo2_#in~n=|v_fibo2_#in~n_1|} AuxVars[] AssignedVars[fibo2_~n] 107#L18 [87] L18-->L20: Formula: (>= v_fibo2_~n_3 1) InVars {fibo2_~n=v_fibo2_~n_3} OutVars{fibo2_~n=v_fibo2_~n_3} AuxVars[] AssignedVars[] 108#L20 [94] L20-->L23: Formula: (< 1 v_fibo2_~n_5) InVars {fibo2_~n=v_fibo2_~n_5} OutVars{fibo2_~n=v_fibo2_~n_5} AuxVars[] AssignedVars[] 91#L23 [52] L23-->fibo1ENTRY: Formula: (= |v_fibo1_#in~nInParam_2| (+ v_fibo2_~n_8 (- 1))) InVars {fibo2_~n=v_fibo2_~n_8} OutVars{fibo1_#in~n=|v_fibo1_#in~nInParam_2|} AuxVars[] AssignedVars[fibo1_#in~n]< 94#fibo1ENTRY [2020-06-22 01:15:25,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:15:25,841 INFO L82 PathProgramCache]: Analyzing trace with hash 3258, now seen corresponding path program 3 times [2020-06-22 01:15:25,841 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:15:25,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:15:25,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:15:25,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:15:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:15:25,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:15:25,848 INFO L82 PathProgramCache]: Analyzing trace with hash 744919814, now seen corresponding path program 1 times [2020-06-22 01:15:25,848 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:15:25,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:15:25,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 01:15:25,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:15:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:15:25,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:15:25,860 INFO L82 PathProgramCache]: Analyzing trace with hash -2029070657, now seen corresponding path program 1 times [2020-06-22 01:15:25,860 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:15:25,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:15:25,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:15:25,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:15:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:15:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 01:15:25,918 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 01:15:25,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-06-22 01:15:26,065 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:15:26,067 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:15:26,067 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:15:26,067 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:15:26,067 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 01:15:26,067 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:15:26,067 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:15:26,067 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:15:26,068 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-22 01:15:26,068 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:15:26,068 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:15:26,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,192 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:15:26,193 INFO L412 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 [2020-06-22 01:15:26,201 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:15:26,201 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:15:26,210 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:15:26,210 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=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 [2020-06-22 01:15:26,240 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:15:26,240 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:15:26,248 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:15:26,248 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#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 [2020-06-22 01:15:26,276 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:15:26,276 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:15:26,280 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:15:26,281 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=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 [2020-06-22 01:15:26,310 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:15:26,310 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:15:26,314 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:15:26,314 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret2=0} Honda state: {fibo2_#t~ret2=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 [2020-06-22 01:15:26,341 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:15:26,342 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:15:26,345 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:15:26,345 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret3=0} Honda state: {fibo2_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-06-22 01:15:26,373 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:15:26,373 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:15:26,377 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:15:26,377 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:15:26,405 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:15:26,405 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:15:26,412 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:15:26,412 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:15:26,440 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:15:26,441 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:15:26,444 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:15:26,445 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret1=0} Honda state: {fibo1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:15:26,476 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:15:26,476 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:15:26,480 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:15:26,481 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret0=0} Honda state: {fibo1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:15:26,509 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:15:26,509 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:15:26,541 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 01:15:26,541 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:15:26,609 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 01:15:26,611 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:15:26,611 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:15:26,611 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:15:26,611 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:15:26,612 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 01:15:26,612 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 01:15:26,612 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:15:26,612 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:15:26,612 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-22 01:15:26,612 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:15:26,612 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:15:26,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:15:26,687 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:15:26,693 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 01:15:26,697 INFO L122 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 [2020-06-22 01:15:26,699 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:15:26,699 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:15:26,700 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:15:26,700 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:15:26,701 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:15:26,703 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:15:26,704 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:15:26,709 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:15:26,710 INFO L122 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 [2020-06-22 01:15:26,711 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:15:26,711 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:15:26,711 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:15:26,711 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:15:26,711 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:15:26,712 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:15:26,712 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:15:26,713 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:15:26,714 INFO L122 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 [2020-06-22 01:15:26,714 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:15:26,715 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:15:26,715 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:15:26,715 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:15:26,715 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:15:26,716 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:15:26,716 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:15:26,718 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:15:26,719 INFO L122 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 [2020-06-22 01:15:26,719 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:15:26,719 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:15:26,720 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:15:26,720 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:15:26,720 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:15:26,720 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:15:26,721 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:15:26,722 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:15:26,722 INFO L122 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 [2020-06-22 01:15:26,723 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:15:26,723 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:15:26,723 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:15:26,723 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:15:26,723 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:15:26,724 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:15:26,724 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:15:26,725 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:15:26,726 INFO L122 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 [2020-06-22 01:15:26,727 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:15:26,727 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:15:26,727 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:15:26,727 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:15:26,727 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:15:26,728 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:15:26,728 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:15:26,729 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:15:26,729 INFO L122 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 [2020-06-22 01:15:26,730 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:15:26,730 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:15:26,730 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:15:26,730 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:15:26,731 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:15:26,731 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:15:26,731 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:15:26,732 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:15:26,733 INFO L122 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 [2020-06-22 01:15:26,733 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:15:26,734 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:15:26,734 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:15:26,734 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:15:26,734 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:15:26,735 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:15:26,735 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:15:26,737 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:15:26,737 INFO L122 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 [2020-06-22 01:15:26,738 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:15:26,738 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:15:26,738 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:15:26,738 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:15:26,738 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:15:26,739 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:15:26,739 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:15:26,744 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 01:15:26,750 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 01:15:26,750 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 01:15:26,752 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 01:15:26,752 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 01:15:26,752 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 01:15:26,753 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2020-06-22 01:15:26,754 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 01:15:26,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:15:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:15:26,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 01:15:26,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:15:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:15:26,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-06-22 01:15:26,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:15:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 01:15:26,925 INFO L98 LoopCannibalizer]: 5 predicates before loop cannibalization 5 predicates after loop cannibalization [2020-06-22 01:15:26,927 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 5 loop predicates [2020-06-22 01:15:26,928 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 18 states and 24 transitions. cyclomatic complexity: 7 Second operand 6 states. [2020-06-22 01:15:27,170 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 18 states and 24 transitions. cyclomatic complexity: 7. Second operand 6 states. Result 80 states and 112 transitions. Complement of second has 28 states. [2020-06-22 01:15:27,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2020-06-22 01:15:27,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-06-22 01:15:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 44 transitions. [2020-06-22 01:15:27,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 44 transitions. Stem has 2 letters. Loop has 8 letters. [2020-06-22 01:15:27,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:15:27,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 44 transitions. Stem has 10 letters. Loop has 8 letters. [2020-06-22 01:15:27,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:15:27,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 44 transitions. Stem has 2 letters. Loop has 16 letters. [2020-06-22 01:15:27,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:15:27,186 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 112 transitions. [2020-06-22 01:15:27,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-06-22 01:15:27,193 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 62 states and 85 transitions. [2020-06-22 01:15:27,194 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2020-06-22 01:15:27,194 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2020-06-22 01:15:27,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 85 transitions. [2020-06-22 01:15:27,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 01:15:27,195 INFO L706 BuchiCegarLoop]: Abstraction has 62 states and 85 transitions. [2020-06-22 01:15:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 85 transitions. [2020-06-22 01:15:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 53. [2020-06-22 01:15:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-06-22 01:15:27,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2020-06-22 01:15:27,203 INFO L729 BuchiCegarLoop]: Abstraction has 53 states and 71 transitions. [2020-06-22 01:15:27,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-06-22 01:15:27,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-06-22 01:15:27,204 INFO L87 Difference]: Start difference. First operand 53 states and 71 transitions. Second operand 7 states. [2020-06-22 01:15:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 01:15:27,263 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-06-22 01:15:27,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-06-22 01:15:27,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 15 transitions. [2020-06-22 01:15:27,267 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 01:15:27,267 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2020-06-22 01:15:27,267 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-22 01:15:27,267 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-22 01:15:27,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-22 01:15:27,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 01:15:27,268 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 01:15:27,268 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 01:15:27,268 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 01:15:27,268 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-22 01:15:27,268 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-22 01:15:27,268 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 01:15:27,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-22 01:15:27,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 01:15:27 BasicIcfg [2020-06-22 01:15:27,274 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 01:15:27,275 INFO L168 Benchmark]: Toolchain (without parser) took 2644.18 ms. Allocated memory was 649.6 MB in the beginning and 693.1 MB in the end (delta: 43.5 MB). Free memory was 558.8 MB in the beginning and 431.2 MB in the end (delta: 127.6 MB). Peak memory consumption was 171.1 MB. Max. memory is 50.3 GB. [2020-06-22 01:15:27,276 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 580.4 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 01:15:27,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.90 ms. Allocated memory was 649.6 MB in the beginning and 693.1 MB in the end (delta: 43.5 MB). Free memory was 558.8 MB in the beginning and 658.4 MB in the end (delta: -99.7 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. [2020-06-22 01:15:27,277 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.05 ms. Allocated memory is still 693.1 MB. Free memory was 658.4 MB in the beginning and 657.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-06-22 01:15:27,278 INFO L168 Benchmark]: Boogie Preprocessor took 17.46 ms. Allocated memory is still 693.1 MB. Free memory was 657.0 MB in the beginning and 655.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 01:15:27,279 INFO L168 Benchmark]: RCFGBuilder took 222.45 ms. Allocated memory is still 693.1 MB. Free memory was 655.7 MB in the beginning and 639.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 50.3 GB. [2020-06-22 01:15:27,279 INFO L168 Benchmark]: BlockEncodingV2 took 79.16 ms. Allocated memory is still 693.1 MB. Free memory was 639.5 MB in the beginning and 634.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-22 01:15:27,280 INFO L168 Benchmark]: TraceAbstraction took 179.64 ms. Allocated memory is still 693.1 MB. Free memory was 632.7 MB in the beginning and 621.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 50.3 GB. [2020-06-22 01:15:27,280 INFO L168 Benchmark]: BuchiAutomizer took 1804.52 ms. Allocated memory is still 693.1 MB. Free memory was 621.8 MB in the beginning and 431.2 MB in the end (delta: 190.6 MB). Peak memory consumption was 190.6 MB. Max. memory is 50.3 GB. [2020-06-22 01:15:27,284 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 25 locations, 32 edges - StatisticsResult: Encoded RCFG 18 locations, 26 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 580.4 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 302.90 ms. Allocated memory was 649.6 MB in the beginning and 693.1 MB in the end (delta: 43.5 MB). Free memory was 558.8 MB in the beginning and 658.4 MB in the end (delta: -99.7 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.05 ms. Allocated memory is still 693.1 MB. Free memory was 658.4 MB in the beginning and 657.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 17.46 ms. Allocated memory is still 693.1 MB. Free memory was 657.0 MB in the beginning and 655.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 222.45 ms. Allocated memory is still 693.1 MB. Free memory was 655.7 MB in the beginning and 639.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 79.16 ms. Allocated memory is still 693.1 MB. Free memory was 639.5 MB in the beginning and 634.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 179.64 ms. Allocated memory is still 693.1 MB. Free memory was 632.7 MB in the beginning and 621.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1804.52 ms. Allocated memory is still 693.1 MB. Free memory was 621.8 MB in the beginning and 431.2 MB in the end (delta: 190.6 MB). Peak memory consumption was 190.6 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 3 procedures, 18 locations, 0 error locations. SAFE Result, 0.1s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 16 NumberOfFragments, 7 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (3 trivial, 0 deterministic, 1 nondeterministic). One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. 3 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 76 SDtfs, 68 SDslu, 75 SDs, 0 SdLazy, 145 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-06-22 01:15:21.414 ----------------------------------------------- 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 -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 01:15:27.518 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check