/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 10:35:51,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:35:51,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:35:51,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:35:51,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:35:51,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:35:51,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:35:51,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:35:51,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:35:51,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:35:51,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:35:51,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:35:51,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:35:51,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:35:51,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:35:51,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:35:51,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:35:51,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:35:51,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:35:51,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:35:51,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:35:51,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:35:51,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:35:51,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:35:51,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:35:51,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:35:51,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:35:51,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:35:51,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:35:51,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:35:51,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:35:51,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:35:51,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:35:51,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:35:51,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:35:51,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:35:51,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:35:51,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:35:51,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:35:51,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:35:51,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:35:51,488 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 10:35:51,503 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:35:51,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:35:51,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:35:51,504 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:35:51,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:35:51,505 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:35:51,505 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:35:51,505 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:35:51,505 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:35:51,505 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:35:51,505 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:35:51,506 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:35:51,506 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:35:51,506 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:35:51,506 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:51,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:35:51,507 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:35:51,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:35:51,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:35:51,507 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:35:51,507 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:35:51,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:35:51,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:35:51,508 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:35:51,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:35:51,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:35:51,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:35:51,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:35:51,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:35:51,671 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:35:51,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:35:51,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:35:51,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:35:51,690 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:35:51,690 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:35:51,752 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_D19fDQ/tmp/13cdeeb3ff46413f9ca7abfb22bac146/FLAG8a4f80e63 [2020-07-01 10:35:52,092 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:35:52,093 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:35:52,099 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_D19fDQ/tmp/13cdeeb3ff46413f9ca7abfb22bac146/FLAG8a4f80e63 [2020-07-01 10:35:52,513 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_D19fDQ/tmp/13cdeeb3ff46413f9ca7abfb22bac146 [2020-07-01 10:35:52,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:35:52,525 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:35:52,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:35:52,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:35:52,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:35:52,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:35:52" (1/1) ... [2020-07-01 10:35:52,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d8bebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52, skipping insertion in model container [2020-07-01 10:35:52,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:35:52" (1/1) ... [2020-07-01 10:35:52,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:35:52,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:35:52,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:35:52,779 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:35:52,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:35:52,809 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:35:52,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52 WrapperNode [2020-07-01 10:35:52,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:35:52,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:35:52,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:35:52,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:35:52,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52" (1/1) ... [2020-07-01 10:35:52,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52" (1/1) ... [2020-07-01 10:35:52,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:35:52,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:35:52,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:35:52,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:35:52,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52" (1/1) ... [2020-07-01 10:35:52,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52" (1/1) ... [2020-07-01 10:35:52,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52" (1/1) ... [2020-07-01 10:35:52,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52" (1/1) ... [2020-07-01 10:35:52,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52" (1/1) ... [2020-07-01 10:35:52,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52" (1/1) ... [2020-07-01 10:35:52,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52" (1/1) ... [2020-07-01 10:35:52,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:35:52,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:35:52,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:35:52,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:35:52,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:35:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:35:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:35:53,066 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:35:53,067 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:35:53,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:35:53 BoogieIcfgContainer [2020-07-01 10:35:53,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:35:53,071 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:35:53,071 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:35:53,073 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:35:53,074 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:35:53" (1/1) ... [2020-07-01 10:35:53,086 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 12 edges [2020-07-01 10:35:53,087 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:35:53,088 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:35:53,088 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:35:53,089 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:35:53,090 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:35:53,091 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:35:53,091 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:35:53,106 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:35:53,120 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 10:35:53,124 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:35:53,126 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:35:53,135 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 10:35:53,137 INFO L70 RemoveSinkStates]: Removed 4 edges and 2 locations by removing sink states [2020-07-01 10:35:53,138 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:35:53,138 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:35:53,144 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 10:35:53,144 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:35:53,144 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:35:53,145 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:35:53,145 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:35:53,145 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:35:53,145 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 6 edges [2020-07-01 10:35:53,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:35:53 BasicIcfg [2020-07-01 10:35:53,146 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:35:53,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:35:53,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:35:53,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:35:53,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:35:52" (1/4) ... [2020-07-01 10:35:53,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5589e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:35:53, skipping insertion in model container [2020-07-01 10:35:53,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52" (2/4) ... [2020-07-01 10:35:53,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5589e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:35:53, skipping insertion in model container [2020-07-01 10:35:53,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:35:53" (3/4) ... [2020-07-01 10:35:53,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5589e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:35:53, skipping insertion in model container [2020-07-01 10:35:53,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:35:53" (4/4) ... [2020-07-01 10:35:53,155 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:35:53,166 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:35:53,173 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:35:53,187 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:35:53,210 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:35:53,210 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:35:53,210 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:35:53,210 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:35:53,210 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:35:53,211 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:35:53,211 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:35:53,211 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:35:53,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 10:35:53,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:35:53,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 10:35:53,286 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:35:53,287 INFO L268 CegarLoopResult]: For program point L13(lines 13 17) no Hoare annotation was computed. [2020-07-01 10:35:53,287 INFO L268 CegarLoopResult]: For program point L13-2(lines 13 17) no Hoare annotation was computed. [2020-07-01 10:35:53,287 INFO L271 CegarLoopResult]: At program point L12-2(lines 12 19) the Hoare annotation is: true [2020-07-01 10:35:53,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:35:53 BasicIcfg [2020-07-01 10:35:53,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:35:53,297 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:35:53,297 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:35:53,301 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:35:53,301 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:35:53,302 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:35:52" (1/5) ... [2020-07-01 10:35:53,302 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30c3af4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:35:53, skipping insertion in model container [2020-07-01 10:35:53,303 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:35:53,303 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:35:52" (2/5) ... [2020-07-01 10:35:53,303 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30c3af4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:35:53, skipping insertion in model container [2020-07-01 10:35:53,303 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:35:53,303 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:35:53" (3/5) ... [2020-07-01 10:35:53,304 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30c3af4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:35:53, skipping insertion in model container [2020-07-01 10:35:53,304 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:35:53,304 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:35:53" (4/5) ... [2020-07-01 10:35:53,304 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30c3af4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:35:53, skipping insertion in model container [2020-07-01 10:35:53,304 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:35:53,305 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:35:53" (5/5) ... [2020-07-01 10:35:53,306 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:35:53,333 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:35:53,334 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:35:53,334 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:35:53,334 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:35:53,334 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:35:53,334 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:35:53,334 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:35:53,334 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:35:53,337 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 10:35:53,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:35:53,354 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:35:53,354 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:35:53,360 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:35:53,360 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:35:53,360 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:35:53,361 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 10:35:53,361 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:35:53,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:35:53,361 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:35:53,362 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:35:53,362 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:35:53,367 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [52] ULTIMATE.startENTRY-->L12-2: Formula: (and (= 0 v_ULTIMATE.start_main_~c~0_8) (< 0 v_ULTIMATE.start_main_~y~0_10) (< 0 v_ULTIMATE.start_main_~x~0_14)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_14} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 3#L12-2true [2020-07-01 10:35:53,367 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true [48] L12-2-->L13: Formula: (< 0 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 6#L13true [40] L13-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~y~0_1) (< v_ULTIMATE.start_main_~y~0_1 v_ULTIMATE.start_main_~x~0_2)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_2} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 5#L13-2true [39] L13-2-->L12-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 3#L12-2true [2020-07-01 10:35:53,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:53,374 INFO L82 PathProgramCache]: Analyzing trace with hash 83, now seen corresponding path program 1 times [2020-07-01 10:35:53,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:53,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005991724] [2020-07-01 10:35:53,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:53,456 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:35:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:53,457 INFO L82 PathProgramCache]: Analyzing trace with hash 77198, now seen corresponding path program 1 times [2020-07-01 10:35:53,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:53,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262573021] [2020-07-01 10:35:53,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:53,474 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:35:53,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:53,476 INFO L82 PathProgramCache]: Analyzing trace with hash 2520060, now seen corresponding path program 1 times [2020-07-01 10:35:53,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:53,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782021590] [2020-07-01 10:35:53,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:53,490 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:35:53,538 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:35:53,539 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:35:53,539 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:35:53,540 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:35:53,540 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:35:53,540 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:53,540 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:35:53,540 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:35:53,540 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:35:53,541 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:35:53,541 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:35:53,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:53,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:53,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:53,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:53,681 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:35:53,682 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:53,689 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:35:53,689 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:35:53,700 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:35:53,700 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:53,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:35:53,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:35:53,743 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:35:53,743 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:53,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:35:53,779 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:53,817 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:35:53,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:35:53,834 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:35:53,835 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=-1}] Lambdas: [11, 1, 1] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:53,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:35:53,869 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:53,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:35:53,911 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:35:54,056 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:35:54,058 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:35:54,059 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:35:54,059 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:35:54,059 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:35:54,059 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:35:54,059 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:35:54,059 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:35:54,059 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:35:54,060 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:35:54,060 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:35:54,060 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:35:54,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:54,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:54,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:54,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:54,144 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:35:54,150 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:35:54,156 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:35:54,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:35:54,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:35:54,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:35:54,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:35:54,165 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:35:54,165 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:35:54,172 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:35:54,206 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:35:54,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:35:54,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:35:54,208 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:35:54,208 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:35:54,213 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:35:54,213 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:35:54,218 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:35:54,252 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:35:54,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:35:54,255 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:35:54,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:35:54,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:35:54,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:35:54,257 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:35:54,257 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:35:54,260 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:35:54,294 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:35:54,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:35:54,296 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:35:54,296 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:35:54,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:35:54,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:35:54,298 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:35:54,298 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:35:54,302 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:35:54,307 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:35:54,307 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:35:54,318 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:35:54,319 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:35:54,319 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:35:54,320 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 10:35:54,354 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:35:54,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:54,388 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:35:54,389 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:35:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:54,401 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 10:35:54,402 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:35:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:35:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:54,505 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 10:35:54,506 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:35:54,513 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 10:35:54,518 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 4 loop predicates [2020-07-01 10:35:54,520 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 4 states. [2020-07-01 10:35:54,643 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 4 states. Result 20 states and 32 transitions. Complement of second has 10 states. [2020-07-01 10:35:54,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 10:35:54,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 10:35:54,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 28 transitions. [2020-07-01 10:35:54,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 28 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 10:35:54,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:35:54,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 28 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 10:35:54,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:35:54,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 28 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 10:35:54,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:35:54,659 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 32 transitions. [2020-07-01 10:35:54,660 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:35:54,666 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 24 transitions. [2020-07-01 10:35:54,667 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 10:35:54,668 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 10:35:54,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 24 transitions. [2020-07-01 10:35:54,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:35:54,669 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 24 transitions. [2020-07-01 10:35:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 24 transitions. [2020-07-01 10:35:54,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 10. [2020-07-01 10:35:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 10:35:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2020-07-01 10:35:54,701 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-07-01 10:35:54,701 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-07-01 10:35:54,701 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 10:35:54,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2020-07-01 10:35:54,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:35:54,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:35:54,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:35:54,703 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 10:35:54,703 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:35:54,703 INFO L794 eck$LassoCheckResult]: Stem: 85#ULTIMATE.startENTRY [52] ULTIMATE.startENTRY-->L12-2: Formula: (and (= 0 v_ULTIMATE.start_main_~c~0_8) (< 0 v_ULTIMATE.start_main_~y~0_10) (< 0 v_ULTIMATE.start_main_~x~0_14)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_14} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 81#L12-2 [48] L12-2-->L13: Formula: (< 0 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 82#L13 [45] L13-->L13-2: Formula: (and (>= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_9) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 90#L13-2 [39] L13-2-->L12-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 87#L12-2 [2020-07-01 10:35:54,704 INFO L796 eck$LassoCheckResult]: Loop: 87#L12-2 [49] L12-2-->L13: Formula: (> 0 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 89#L13 [40] L13-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~y~0_1) (< v_ULTIMATE.start_main_~y~0_1 v_ULTIMATE.start_main_~x~0_2)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_2} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 86#L13-2 [39] L13-2-->L12-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 87#L12-2 [2020-07-01 10:35:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:54,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2520215, now seen corresponding path program 1 times [2020-07-01 10:35:54,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:54,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194149366] [2020-07-01 10:35:54,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:54,716 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:35:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:54,717 INFO L82 PathProgramCache]: Analyzing trace with hash 78159, now seen corresponding path program 1 times [2020-07-01 10:35:54,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:54,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075923310] [2020-07-01 10:35:54,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:54,727 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:35:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:54,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2065329401, now seen corresponding path program 1 times [2020-07-01 10:35:54,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:54,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659206931] [2020-07-01 10:35:54,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:35:54,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659206931] [2020-07-01 10:35:54,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604298943] [2020-07-01 10:35:54,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:35:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:54,807 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 10:35:54,808 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:35:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:35:54,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 10:35:54,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-07-01 10:35:54,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306222902] [2020-07-01 10:35:54,841 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:35:54,841 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:35:54,842 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:35:54,842 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:35:54,842 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:35:54,842 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:54,842 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:35:54,842 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:35:54,842 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:35:54,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:35:54,843 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:35:54,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:54,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:54,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:54,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:54,924 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:35:54,924 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:54,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:35:54,932 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:35:54,937 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:35:54,937 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:54,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:35:54,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:35:54,978 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:35:54,978 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:55,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:35:55,014 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:55,051 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:35:55,051 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:35:55,066 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:35:55,067 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=-1}] Lambdas: [11, 1, 1] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:55,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:35:55,103 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:55,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:35:55,146 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:35:55,359 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:35:55,362 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:35:55,375 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:35:55,376 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:35:55,376 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:35:55,376 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:35:55,376 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:35:55,377 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:35:55,377 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:35:55,377 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:35:55,377 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:35:55,377 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:35:55,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:55,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:55,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:55,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:55,449 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:35:55,450 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:35:55,456 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:35:55,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:35:55,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:35:55,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:35:55,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:35:55,461 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:35:55,462 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:35:55,467 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:35:55,499 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:35:55,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:35:55,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:35:55,502 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:35:55,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:35:55,505 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:35:55,505 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:35:55,509 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:35:55,542 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:35:55,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:35:55,544 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:35:55,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:35:55,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:35:55,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:35:55,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:35:55,546 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:35:55,548 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:35:55,582 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:35:55,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:35:55,584 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:35:55,584 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:35:55,584 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:35:55,584 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:35:55,585 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:35:55,586 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:35:55,589 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:35:55,594 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:35:55,594 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:35:55,603 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:35:55,604 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:35:55,604 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:35:55,604 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 10:35:55,634 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:35:55,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:55,667 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:35:55,667 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:35:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:55,672 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:35:55,673 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:35:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:35:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:55,710 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:35:55,710 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:35:55,711 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 10:35:55,711 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 10:35:55,711 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-07-01 10:35:55,808 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 10 states and 15 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 70 states and 110 transitions. Complement of second has 23 states. [2020-07-01 10:35:55,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2020-07-01 10:35:55,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 10:35:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 22 transitions. [2020-07-01 10:35:55,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 10:35:55,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:35:55,811 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 7 letters. Loop has 3 letters. [2020-07-01 10:35:55,811 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:35:55,811 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 4 letters. Loop has 6 letters. [2020-07-01 10:35:55,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:35:55,814 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 70 states and 110 transitions. [2020-07-01 10:35:55,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:35:55,819 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 70 states to 27 states and 37 transitions. [2020-07-01 10:35:55,819 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 10:35:55,819 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-07-01 10:35:55,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 37 transitions. [2020-07-01 10:35:55,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:35:55,820 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-07-01 10:35:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 37 transitions. [2020-07-01 10:35:55,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2020-07-01 10:35:55,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-01 10:35:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2020-07-01 10:35:55,823 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 25 transitions. [2020-07-01 10:35:55,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:35:55,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 10:35:55,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 10:35:55,826 INFO L87 Difference]: Start difference. First operand 17 states and 25 transitions. Second operand 4 states. [2020-07-01 10:35:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:35:55,848 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2020-07-01 10:35:55,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 10:35:55,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 32 transitions. [2020-07-01 10:35:55,851 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:35:55,852 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 14 states and 17 transitions. [2020-07-01 10:35:55,852 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 10:35:55,852 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-07-01 10:35:55,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 17 transitions. [2020-07-01 10:35:55,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:35:55,852 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-07-01 10:35:55,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 17 transitions. [2020-07-01 10:35:55,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2020-07-01 10:35:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-01 10:35:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2020-07-01 10:35:55,854 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-07-01 10:35:55,854 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-07-01 10:35:55,855 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 10:35:55,855 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2020-07-01 10:35:55,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:35:55,855 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:35:55,855 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:35:55,856 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-07-01 10:35:55,856 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:35:55,856 INFO L794 eck$LassoCheckResult]: Stem: 297#ULTIMATE.startENTRY [52] ULTIMATE.startENTRY-->L12-2: Formula: (and (= 0 v_ULTIMATE.start_main_~c~0_8) (< 0 v_ULTIMATE.start_main_~y~0_10) (< 0 v_ULTIMATE.start_main_~x~0_14)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_14} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 298#L12-2 [48] L12-2-->L13: Formula: (< 0 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 305#L13 [40] L13-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~y~0_1) (< v_ULTIMATE.start_main_~y~0_1 v_ULTIMATE.start_main_~x~0_2)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_2} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 303#L13-2 [39] L13-2-->L12-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 304#L12-2 [49] L12-2-->L13: Formula: (> 0 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 296#L13 [2020-07-01 10:35:55,856 INFO L796 eck$LassoCheckResult]: Loop: 296#L13 [45] L13-->L13-2: Formula: (and (>= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_9) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 299#L13-2 [39] L13-2-->L12-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 295#L12-2 [49] L12-2-->L13: Formula: (> 0 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 296#L13 [2020-07-01 10:35:55,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:55,857 INFO L82 PathProgramCache]: Analyzing trace with hash 78121909, now seen corresponding path program 1 times [2020-07-01 10:35:55,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:55,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066367462] [2020-07-01 10:35:55,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:35:55,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066367462] [2020-07-01 10:35:55,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337096819] [2020-07-01 10:35:55,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:35:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:35:55,901 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 10:35:55,901 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:35:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:35:55,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 10:35:55,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-07-01 10:35:55,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040701492] [2020-07-01 10:35:55,911 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 10:35:55,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:35:55,911 INFO L82 PathProgramCache]: Analyzing trace with hash 74294, now seen corresponding path program 1 times [2020-07-01 10:35:55,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:35:55,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359413274] [2020-07-01 10:35:55,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:35:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:35:55,919 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:35:55,934 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:35:55,935 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:35:55,935 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:35:55,935 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:35:55,935 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:35:55,935 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:55,935 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:35:55,935 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:35:55,935 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 10:35:55,935 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:35:55,936 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:35:55,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:55,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:55,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:55,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:35:55,996 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:35:55,996 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:55,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:35:55,999 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:35:56,004 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:35:56,004 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:56,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:35:56,036 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:56,071 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:35:56,071 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:35:56,151 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:35:56,151 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-7, ULTIMATE.start_main_~x~0=-7} Honda state: {ULTIMATE.start_main_~y~0=-7, ULTIMATE.start_main_~x~0=-7} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1}] Lambdas: [2, 1, 1] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:56,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:35:56,184 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:56,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:35:56,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:35:56,233 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:35:56,234 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=-1}] Lambdas: [11, 1, 1] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:35:56,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:35:56,266 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:35:56,270 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:35:56,270 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-07-01 10:35:56,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:35:56,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 10:35:56,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-01 10:35:56,300 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 4 Second operand 4 states. [2020-07-01 10:35:56,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:35:56,313 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-07-01 10:35:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 10:35:56,314 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 11 transitions. [2020-07-01 10:35:56,315 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:35:56,315 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2020-07-01 10:35:56,315 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 10:35:56,315 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 10:35:56,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 10:35:56,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:35:56,316 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:35:56,316 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:35:56,316 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:35:56,316 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 10:35:56,316 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 10:35:56,316 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:35:56,316 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 10:35:56,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:35:56 BasicIcfg [2020-07-01 10:35:56,322 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:35:56,325 INFO L168 Benchmark]: Toolchain (without parser) took 3798.44 ms. Allocated memory was 649.6 MB in the beginning and 749.7 MB in the end (delta: 100.1 MB). Free memory was 555.2 MB in the beginning and 641.1 MB in the end (delta: -85.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:56,325 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:35:56,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.00 ms. Allocated memory was 649.6 MB in the beginning and 676.3 MB in the end (delta: 26.7 MB). Free memory was 555.2 MB in the beginning and 639.6 MB in the end (delta: -84.4 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:56,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.80 ms. Allocated memory is still 676.3 MB. Free memory was 639.6 MB in the beginning and 638.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:56,327 INFO L168 Benchmark]: Boogie Preprocessor took 18.73 ms. Allocated memory is still 676.3 MB. Free memory was 638.3 MB in the beginning and 636.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:56,327 INFO L168 Benchmark]: RCFGBuilder took 208.22 ms. Allocated memory is still 676.3 MB. Free memory was 636.9 MB in the beginning and 623.0 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:56,328 INFO L168 Benchmark]: BlockEncodingV2 took 75.59 ms. Allocated memory is still 676.3 MB. Free memory was 623.0 MB in the beginning and 616.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:56,328 INFO L168 Benchmark]: TraceAbstraction took 149.14 ms. Allocated memory is still 676.3 MB. Free memory was 616.3 MB in the beginning and 608.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:56,329 INFO L168 Benchmark]: BuchiAutomizer took 3025.05 ms. Allocated memory was 676.3 MB in the beginning and 749.7 MB in the end (delta: 73.4 MB). Free memory was 608.1 MB in the beginning and 641.1 MB in the end (delta: -33.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:35:56,332 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 9 locations, 12 edges - StatisticsResult: Encoded RCFG 4 locations, 6 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 283.00 ms. Allocated memory was 649.6 MB in the beginning and 676.3 MB in the end (delta: 26.7 MB). Free memory was 555.2 MB in the beginning and 639.6 MB in the end (delta: -84.4 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 32.80 ms. Allocated memory is still 676.3 MB. Free memory was 639.6 MB in the beginning and 638.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.73 ms. Allocated memory is still 676.3 MB. Free memory was 638.3 MB in the beginning and 636.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 208.22 ms. Allocated memory is still 676.3 MB. Free memory was 636.9 MB in the beginning and 623.0 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 75.59 ms. Allocated memory is still 676.3 MB. Free memory was 623.0 MB in the beginning and 616.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 50.3 GB. * TraceAbstraction took 149.14 ms. Allocated memory is still 676.3 MB. Free memory was 616.3 MB in the beginning and 608.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 3025.05 ms. Allocated memory was 676.3 MB in the beginning and 749.7 MB in the end (delta: 73.4 MB). Free memory was 608.1 MB in the beginning and 641.1 MB in the end (delta: -33.0 MB). Peak memory consumption was 40.4 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. - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 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 (2 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function x and consists of 7 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 6 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 14 SDtfs, 30 SDslu, 14 SDs, 0 SdLazy, 70 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN1 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax173 hnf100 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq138 hnf93 smp100 dnf100 smp100 tf113 neg100 sie122 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 4 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 10:35:49.191 ----------------------------------------------- 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/sandbox/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/sandbox/tmp/BenchExec_run_D19fDQ/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:35:56.967 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check