/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:15:52,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:15:52,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:15:52,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:15:52,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:15:52,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:15:52,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:15:52,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:15:52,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:15:52,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:15:52,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:15:52,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:15:52,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:15:52,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:15:52,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:15:52,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:15:52,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:15:52,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:15:52,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:15:52,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:15:52,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:15:52,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:15:52,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:15:52,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:15:52,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:15:52,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:15:52,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:15:52,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:15:52,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:15:52,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:15:52,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:15:52,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:15:52,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:15:52,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:15:52,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:15:52,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:15:52,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:15:52,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:15:52,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:15:52,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:15:52,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:15:52,781 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 11:15:52,795 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:15:52,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:15:52,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:15:52,796 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:15:52,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:15:52,797 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:15:52,797 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:15:52,797 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:15:52,797 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:15:52,797 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:15:52,798 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:15:52,798 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:15:52,798 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:15:52,798 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:15:52,798 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:52,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:15:52,799 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:15:52,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:15:52,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:15:52,799 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:15:52,799 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:15:52,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:15:52,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:15:52,800 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:15:52,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:15:52,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:15:52,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:15:52,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:15:52,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:15:52,966 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:15:52,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:15:52,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:15:52,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:15:52,984 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:15:52,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:15:53,077 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_FwaNFq/tmp/7237a9294077479ba66b520ab599225b/FLAG11213789f [2020-07-01 11:15:53,395 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:15:53,396 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:15:53,402 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_FwaNFq/tmp/7237a9294077479ba66b520ab599225b/FLAG11213789f [2020-07-01 11:15:53,836 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_FwaNFq/tmp/7237a9294077479ba66b520ab599225b [2020-07-01 11:15:53,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:15:53,849 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:15:53,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:15:53,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:15:53,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:15:53,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:15:53" (1/1) ... [2020-07-01 11:15:53,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408c171c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:53, skipping insertion in model container [2020-07-01 11:15:53,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:15:53" (1/1) ... [2020-07-01 11:15:53,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:15:53,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:15:54,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:15:54,110 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:15:54,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:15:54,141 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:15:54,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:54 WrapperNode [2020-07-01 11:15:54,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:15:54,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:15:54,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:15:54,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:15:54,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:54" (1/1) ... [2020-07-01 11:15:54,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:54" (1/1) ... [2020-07-01 11:15:54,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:15:54,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:15:54,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:15:54,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:15:54,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:54" (1/1) ... [2020-07-01 11:15:54,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:54" (1/1) ... [2020-07-01 11:15:54,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:54" (1/1) ... [2020-07-01 11:15:54,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:54" (1/1) ... [2020-07-01 11:15:54,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:54" (1/1) ... [2020-07-01 11:15:54,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:54" (1/1) ... [2020-07-01 11:15:54,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:54" (1/1) ... [2020-07-01 11:15:54,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:15:54,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:15:54,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:15:54,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:15:54,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:54" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:15:54,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:15:54,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:15:54,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:15:54,451 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-01 11:15:54,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:15:54 BoogieIcfgContainer [2020-07-01 11:15:54,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:15:54,455 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:15:54,455 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:15:54,457 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:15:54,458 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:15:54" (1/1) ... [2020-07-01 11:15:54,470 INFO L313 BlockEncoder]: Initial Icfg 10 locations, 14 edges [2020-07-01 11:15:54,471 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:15:54,472 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:15:54,473 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:15:54,473 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:15:54,475 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:15:54,475 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:15:54,476 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:15:54,492 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:15:54,507 INFO L200 BlockEncoder]: SBE split 4 edges [2020-07-01 11:15:54,511 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-07-01 11:15:54,513 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:15:54,522 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 11:15:54,524 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 11:15:54,525 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:15:54,525 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:15:54,525 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:15:54,526 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:15:54,526 INFO L313 BlockEncoder]: Encoded RCFG 6 locations, 11 edges [2020-07-01 11:15:54,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:15:54 BasicIcfg [2020-07-01 11:15:54,527 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:15:54,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:15:54,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:15:54,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:15:54,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:15:53" (1/4) ... [2020-07-01 11:15:54,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d1314e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:15:54, skipping insertion in model container [2020-07-01 11:15:54,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:54" (2/4) ... [2020-07-01 11:15:54,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d1314e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:15:54, skipping insertion in model container [2020-07-01 11:15:54,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:15:54" (3/4) ... [2020-07-01 11:15:54,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d1314e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:15:54, skipping insertion in model container [2020-07-01 11:15:54,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:15:54" (4/4) ... [2020-07-01 11:15:54,536 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:15:54,547 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:15:54,554 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:15:54,569 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:15:54,592 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:15:54,592 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:15:54,593 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:15:54,593 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:15:54,593 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:15:54,593 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:15:54,593 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:15:54,593 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:15:54,607 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-07-01 11:15:54,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:15:54,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-07-01 11:15:54,673 INFO L268 CegarLoopResult]: For program point L14(lines 14 19) no Hoare annotation was computed. [2020-07-01 11:15:54,674 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:15:54,674 INFO L271 CegarLoopResult]: At program point L15-2(lines 15 17) the Hoare annotation is: true [2020-07-01 11:15:54,674 INFO L268 CegarLoopResult]: For program point L14-2(lines 14 19) no Hoare annotation was computed. [2020-07-01 11:15:54,675 INFO L268 CegarLoopResult]: For program point L15-3(lines 15 17) no Hoare annotation was computed. [2020-07-01 11:15:54,675 INFO L271 CegarLoopResult]: At program point L13-2(lines 13 21) the Hoare annotation is: true [2020-07-01 11:15:54,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:15:54 BasicIcfg [2020-07-01 11:15:54,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:15:54,684 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:15:54,684 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:15:54,688 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:15:54,689 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:15:54,689 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:15:53" (1/5) ... [2020-07-01 11:15:54,689 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36b51bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:15:54, skipping insertion in model container [2020-07-01 11:15:54,690 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:15:54,690 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:15:54" (2/5) ... [2020-07-01 11:15:54,690 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36b51bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:15:54, skipping insertion in model container [2020-07-01 11:15:54,690 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:15:54,690 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:15:54" (3/5) ... [2020-07-01 11:15:54,691 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36b51bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:15:54, skipping insertion in model container [2020-07-01 11:15:54,691 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:15:54,691 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:15:54" (4/5) ... [2020-07-01 11:15:54,692 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36b51bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:15:54, skipping insertion in model container [2020-07-01 11:15:54,692 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:15:54,692 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:15:54" (5/5) ... [2020-07-01 11:15:54,693 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:15:54,721 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:15:54,721 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:15:54,721 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:15:54,721 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:15:54,721 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:15:54,721 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:15:54,722 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:15:54,722 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:15:54,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-07-01 11:15:54,742 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 11:15:54,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:15:54,743 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:15:54,748 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:15:54,748 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:15:54,748 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:15:54,748 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-07-01 11:15:54,749 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 11:15:54,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:15:54,749 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:15:54,750 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:15:54,750 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:15:54,755 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [39] ULTIMATE.startENTRY-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~y~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 4#L13-2true [2020-07-01 11:15:54,755 INFO L796 eck$LassoCheckResult]: Loop: 4#L13-2true [42] L13-2-->L14: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 8#L14true [51] L14-->L14-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet1_5|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_5|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 5#L14-2true [44] L14-2-->L13-2: Formula: (= (+ v_ULTIMATE.start_main_~y~0_9 1) v_ULTIMATE.start_main_~y~0_10) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post5] 4#L13-2true [2020-07-01 11:15:54,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:54,761 INFO L82 PathProgramCache]: Analyzing trace with hash 70, now seen corresponding path program 1 times [2020-07-01 11:15:54,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:54,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554732104] [2020-07-01 11:15:54,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:54,840 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:54,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:54,841 INFO L82 PathProgramCache]: Analyzing trace with hash 71778, now seen corresponding path program 1 times [2020-07-01 11:15:54,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:54,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433861367] [2020-07-01 11:15:54,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:54,857 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:54,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:54,859 INFO L82 PathProgramCache]: Analyzing trace with hash 2127357, now seen corresponding path program 1 times [2020-07-01 11:15:54,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:54,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846003828] [2020-07-01 11:15:54,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:54,874 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:54,924 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:15:54,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:15:54,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:15:54,925 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:15:54,925 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:15:54,926 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:54,926 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:15:54,926 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:15:54,926 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:15:54,926 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:15:54,927 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:15:54,945 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 11:15:54,953 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 11:15:54,963 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 11:15:54,968 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 11:15:55,035 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:15:55,036 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:55,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:55,043 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:55,053 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:15:55,053 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:55,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:55,087 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:55,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:15:55,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:55,160 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:15:55,162 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:15:55,163 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:15:55,163 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:15:55,163 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:15:55,163 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:15:55,163 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:55,163 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:15:55,163 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:15:55,163 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:15:55,164 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:15:55,164 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:15:55,165 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 11:15:55,169 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 11:15:55,177 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 11:15:55,181 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 11:15:55,243 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:15:55,249 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:55,254 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 11:15:55,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:55,257 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:55,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:55,258 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:55,258 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:55,261 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:55,261 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:55,264 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:55,297 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 11:15:55,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:55,299 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:55,300 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:55,300 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:55,300 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:55,302 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:55,302 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:55,305 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:15:55,310 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:15:55,311 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:55,319 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:15:55,320 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:15:55,320 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:15:55,321 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-07-01 11:15:55,354 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:15:55,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:55,402 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:15:55,403 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:55,414 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:15:55,415 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:55,429 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 11:15:55,466 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:15:55,472 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 2 loop predicates [2020-07-01 11:15:55,473 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 6 states. Second operand 3 states. [2020-07-01 11:15:55,567 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 6 states.. Second operand 3 states. Result 22 states and 43 transitions. Complement of second has 7 states. [2020-07-01 11:15:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2020-07-01 11:15:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:15:55,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2020-07-01 11:15:55,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 11:15:55,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:55,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 11:15:55,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:55,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 11:15:55,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:55,580 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 43 transitions. [2020-07-01 11:15:55,583 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-07-01 11:15:55,588 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 17 states and 32 transitions. [2020-07-01 11:15:55,589 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-07-01 11:15:55,589 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-07-01 11:15:55,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 32 transitions. [2020-07-01 11:15:55,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:15:55,591 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 32 transitions. [2020-07-01 11:15:55,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 32 transitions. [2020-07-01 11:15:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2020-07-01 11:15:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-01 11:15:55,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 26 transitions. [2020-07-01 11:15:55,620 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 26 transitions. [2020-07-01 11:15:55,620 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 26 transitions. [2020-07-01 11:15:55,620 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:15:55,620 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 26 transitions. [2020-07-01 11:15:55,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 11:15:55,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:15:55,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:15:55,622 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:15:55,622 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:15:55,623 INFO L794 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY [39] ULTIMATE.startENTRY-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~y~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 73#L13-2 [42] L13-2-->L14: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 78#L14 [59] L14-->L15-2: Formula: (> 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 83#L15-2 [63] L15-2-->L15-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_8 v_ULTIMATE.start_main_~m~0_5) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3] 84#L15-2 [2020-07-01 11:15:55,623 INFO L796 eck$LassoCheckResult]: Loop: 84#L15-2 [62] L15-2-->L15-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_8 v_ULTIMATE.start_main_~m~0_5) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3] 84#L15-2 [2020-07-01 11:15:55,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:55,623 INFO L82 PathProgramCache]: Analyzing trace with hash 2127624, now seen corresponding path program 1 times [2020-07-01 11:15:55,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:55,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598020785] [2020-07-01 11:15:55,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:55,637 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:55,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:55,638 INFO L82 PathProgramCache]: Analyzing trace with hash 93, now seen corresponding path program 1 times [2020-07-01 11:15:55,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:55,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242460684] [2020-07-01 11:15:55,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:55,644 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:55,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:55,645 INFO L82 PathProgramCache]: Analyzing trace with hash 65956406, now seen corresponding path program 1 times [2020-07-01 11:15:55,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:55,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527407906] [2020-07-01 11:15:55,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:55,660 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:55,674 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:15:55,674 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:15:55,675 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:15:55,675 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:15:55,675 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:15:55,675 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:55,675 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:15:55,675 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:15:55,675 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:15:55,675 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:15:55,676 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:15:55,677 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 11:15:55,680 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 11:15:55,687 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 11:15:55,725 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:15:55,725 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:55,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:55,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:55,737 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:15:55,738 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-1} Honda state: {ULTIMATE.start_main_#t~nondet2=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:55,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:55,773 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:55,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:15:55,811 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:56,041 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:15:56,044 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:15:56,044 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:15:56,044 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:15:56,044 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:15:56,044 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:15:56,044 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:56,044 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:15:56,044 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:15:56,045 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:15:56,045 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:15:56,045 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:15:56,046 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 11:15:56,051 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 11:15:56,060 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 11:15:56,094 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:15:56,094 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:56,098 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 11:15:56,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:56,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:56,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:56,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:56,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:56,102 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:56,102 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:56,105 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:56,138 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 11:15:56,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:56,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:56,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:56,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:56,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:56,143 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:56,144 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:56,147 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:15:56,151 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:15:56,151 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:56,154 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:15:56,155 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:15:56,155 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:15:56,155 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~m~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~m~0 + 1 Supporting invariants [] [2020-07-01 11:15:56,187 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:15:56,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:56,210 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:15:56,211 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:56,216 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:15:56,216 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:56,217 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 11:15:56,217 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 11:15:56,217 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 1 loop predicates [2020-07-01 11:15:56,218 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 14 states and 26 transitions. cyclomatic complexity: 14 Second operand 2 states. [2020-07-01 11:15:56,248 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 14 states and 26 transitions. cyclomatic complexity: 14. Second operand 2 states. Result 20 states and 41 transitions. Complement of second has 4 states. [2020-07-01 11:15:56,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:15:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 11:15:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 17 transitions. [2020-07-01 11:15:56,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 4 letters. Loop has 1 letters. [2020-07-01 11:15:56,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:56,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 5 letters. Loop has 1 letters. [2020-07-01 11:15:56,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:56,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 11:15:56,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:56,252 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 41 transitions. [2020-07-01 11:15:56,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-07-01 11:15:56,254 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 18 states and 36 transitions. [2020-07-01 11:15:56,254 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-07-01 11:15:56,255 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-07-01 11:15:56,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 36 transitions. [2020-07-01 11:15:56,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:15:56,256 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 36 transitions. [2020-07-01 11:15:56,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 36 transitions. [2020-07-01 11:15:56,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-07-01 11:15:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-01 11:15:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 34 transitions. [2020-07-01 11:15:56,258 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 34 transitions. [2020-07-01 11:15:56,258 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 34 transitions. [2020-07-01 11:15:56,258 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:15:56,259 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 34 transitions. [2020-07-01 11:15:56,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 11:15:56,260 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:15:56,260 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:15:56,260 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:15:56,260 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:15:56,261 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY [39] ULTIMATE.startENTRY-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~y~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 141#L13-2 [42] L13-2-->L14: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 146#L14 [59] L14-->L15-2: Formula: (> 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 151#L15-2 [62] L15-2-->L15-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_8 v_ULTIMATE.start_main_~m~0_5) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3] 152#L15-2 [2020-07-01 11:15:56,261 INFO L796 eck$LassoCheckResult]: Loop: 152#L15-2 [62] L15-2-->L15-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_8 v_ULTIMATE.start_main_~m~0_5) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3] 152#L15-2 [2020-07-01 11:15:56,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:56,261 INFO L82 PathProgramCache]: Analyzing trace with hash 2127623, now seen corresponding path program 1 times [2020-07-01 11:15:56,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:56,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463924180] [2020-07-01 11:15:56,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:56,272 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:56,273 INFO L82 PathProgramCache]: Analyzing trace with hash 93, now seen corresponding path program 2 times [2020-07-01 11:15:56,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:56,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705713210] [2020-07-01 11:15:56,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:56,279 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:56,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:56,280 INFO L82 PathProgramCache]: Analyzing trace with hash 65956375, now seen corresponding path program 2 times [2020-07-01 11:15:56,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:56,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775847273] [2020-07-01 11:15:56,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:56,295 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:56,315 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:15:56,315 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:15:56,315 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:15:56,315 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:15:56,315 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:15:56,315 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:56,315 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:15:56,316 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:15:56,316 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:15:56,316 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:15:56,316 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:15:56,317 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 11:15:56,321 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 11:15:56,340 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 11:15:56,369 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:15:56,370 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/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 11:15:56,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:56,375 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:56,379 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:15:56,379 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3=0} Honda state: {ULTIMATE.start_main_#t~post3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:56,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:56,413 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:56,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:15:56,452 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:56,684 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:15:56,686 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:15:56,686 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:15:56,687 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:15:56,687 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:15:56,687 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:15:56,687 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:56,687 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:15:56,687 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:15:56,687 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:15:56,687 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:15:56,687 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:15:56,689 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 11:15:56,692 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 11:15:56,697 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 11:15:56,723 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:15:56,723 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:56,728 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 11:15:56,729 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:56,729 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:56,730 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:56,730 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:56,730 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:56,731 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:56,731 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:56,733 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:56,766 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 11:15:56,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:56,769 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:56,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:56,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:56,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:56,771 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:56,771 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:56,774 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:15:56,778 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:15:56,779 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:56,782 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:15:56,782 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:15:56,782 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:15:56,782 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~m~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~m~0 + 1 Supporting invariants [] [2020-07-01 11:15:56,812 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:15:56,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:56,838 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:15:56,838 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:56,842 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:15:56,843 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:56,843 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 11:15:56,843 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 11:15:56,844 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 1 loop predicates [2020-07-01 11:15:56,844 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 16 states and 34 transitions. cyclomatic complexity: 20 Second operand 2 states. [2020-07-01 11:15:56,870 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 16 states and 34 transitions. cyclomatic complexity: 20. Second operand 2 states. Result 27 states and 69 transitions. Complement of second has 4 states. [2020-07-01 11:15:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:15:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 11:15:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 17 transitions. [2020-07-01 11:15:56,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 4 letters. Loop has 1 letters. [2020-07-01 11:15:56,872 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:56,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 5 letters. Loop has 1 letters. [2020-07-01 11:15:56,872 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:56,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 11:15:56,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:56,874 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 69 transitions. [2020-07-01 11:15:56,876 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2020-07-01 11:15:56,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 24 states and 57 transitions. [2020-07-01 11:15:56,877 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-07-01 11:15:56,878 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-07-01 11:15:56,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 57 transitions. [2020-07-01 11:15:56,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:15:56,878 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 57 transitions. [2020-07-01 11:15:56,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 57 transitions. [2020-07-01 11:15:56,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2020-07-01 11:15:56,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-01 11:15:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 34 transitions. [2020-07-01 11:15:56,881 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 34 transitions. [2020-07-01 11:15:56,881 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 34 transitions. [2020-07-01 11:15:56,881 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:15:56,881 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 34 transitions. [2020-07-01 11:15:56,882 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 11:15:56,882 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:15:56,882 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:15:56,883 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:15:56,883 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-07-01 11:15:56,883 INFO L794 eck$LassoCheckResult]: Stem: 217#ULTIMATE.startENTRY [39] ULTIMATE.startENTRY-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~y~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 218#L13-2 [42] L13-2-->L14: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 223#L14 [59] L14-->L15-2: Formula: (> 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 228#L15-2 [63] L15-2-->L15-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_8 v_ULTIMATE.start_main_~m~0_5) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3] 229#L15-2 [2020-07-01 11:15:56,883 INFO L796 eck$LassoCheckResult]: Loop: 229#L15-2 [60] L15-2-->L15-3: Formula: (> v_ULTIMATE.start_main_~y~0_6 v_ULTIMATE.start_main_~m~0_4) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_4} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 224#L15-3 [45] L15-3-->L14-2: Formula: (= (+ v_ULTIMATE.start_main_~x~0_6 1) v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post4] 225#L14-2 [44] L14-2-->L13-2: Formula: (= (+ v_ULTIMATE.start_main_~y~0_9 1) v_ULTIMATE.start_main_~y~0_10) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post5] 219#L13-2 [42] L13-2-->L14: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 220#L14 [58] L14-->L15-2: Formula: (< 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 232#L15-2 [62] L15-2-->L15-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_8 v_ULTIMATE.start_main_~m~0_5) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3] 229#L15-2 [2020-07-01 11:15:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:56,884 INFO L82 PathProgramCache]: Analyzing trace with hash 2127624, now seen corresponding path program 2 times [2020-07-01 11:15:56,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:56,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208023314] [2020-07-01 11:15:56,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:56,894 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:56,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:56,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1646803084, now seen corresponding path program 1 times [2020-07-01 11:15:56,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:56,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945997412] [2020-07-01 11:15:56,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:56,907 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:56,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:56,908 INFO L82 PathProgramCache]: Analyzing trace with hash 2110692667, now seen corresponding path program 1 times [2020-07-01 11:15:56,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:56,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050779099] [2020-07-01 11:15:56,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:15:56,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050779099] [2020-07-01 11:15:56,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930408385] [2020-07-01 11:15:56,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:15:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:57,010 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 11:15:57,011 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:15:57,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 11:15:57,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-01 11:15:57,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444660270] [2020-07-01 11:15:57,151 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:15:57,152 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:15:57,152 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:15:57,152 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:15:57,152 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:15:57,152 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:57,152 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:15:57,152 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:15:57,152 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 11:15:57,152 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:15:57,153 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:15:57,154 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 11:15:57,157 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 11:15:57,159 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 11:15:57,161 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 11:15:57,170 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 11:15:57,185 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 11:15:57,188 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 11:15:57,250 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:15:57,250 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:57,253 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:57,253 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:57,257 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:15:57,257 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:57,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:57,289 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:57,293 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:15:57,293 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:57,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:57,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:57,328 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:15:57,328 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3=0} Honda state: {ULTIMATE.start_main_#t~post3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:57,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:57,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:57,365 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:15:57,365 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=8, ULTIMATE.start_main_~m~0=7} Honda state: {ULTIMATE.start_main_~y~0=8, ULTIMATE.start_main_~m~0=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:57,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:57,397 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:57,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:15:57,431 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:57,513 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:15:57,515 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:15:57,515 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:15:57,515 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:15:57,515 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:15:57,515 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:15:57,515 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:57,515 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:15:57,515 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:15:57,516 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 11:15:57,516 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:15:57,516 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:15:57,517 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 11:15:57,520 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 11:15:57,522 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 11:15:57,530 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 11:15:57,533 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 11:15:57,538 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 11:15:57,540 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 11:15:57,605 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:15:57,605 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:57,608 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 11:15:57,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:57,610 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:57,610 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:57,610 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:57,610 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:57,611 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:57,611 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:57,613 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:57,644 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 11:15:57,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:57,646 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:57,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:57,646 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:57,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:57,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:57,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:57,649 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:57,680 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 11:15:57,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:57,682 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:57,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:57,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:57,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:57,684 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:57,684 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:57,687 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:57,718 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 11:15:57,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:57,720 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:57,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:57,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:57,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:57,721 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:57,721 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:57,723 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:57,754 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 11:15:57,756 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:57,757 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:57,757 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:57,757 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:57,757 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:57,758 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:57,758 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:57,761 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:15:57,764 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:15:57,764 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:57,766 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:15:57,767 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:15:57,767 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:15:57,767 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 11:15:57,797 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:15:57,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:57,813 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:15:57,814 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:57,819 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:15:57,820 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:57,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:15:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:57,848 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:15:57,848 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:57,879 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:15:57,880 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:57,882 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:15:57,882 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 11:15:57,883 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 16 states and 34 transitions. cyclomatic complexity: 20 Second operand 5 states. [2020-07-01 11:15:57,963 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 16 states and 34 transitions. cyclomatic complexity: 20. Second operand 5 states. Result 86 states and 241 transitions. Complement of second has 31 states. [2020-07-01 11:15:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 11:15:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 11:15:57,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 38 transitions. [2020-07-01 11:15:57,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 4 letters. Loop has 6 letters. [2020-07-01 11:15:57,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:57,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 10 letters. Loop has 6 letters. [2020-07-01 11:15:57,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:57,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 4 letters. Loop has 12 letters. [2020-07-01 11:15:57,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:57,968 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 86 states and 241 transitions. [2020-07-01 11:15:57,973 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-07-01 11:15:57,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 86 states to 51 states and 117 transitions. [2020-07-01 11:15:57,975 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-07-01 11:15:57,975 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2020-07-01 11:15:57,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 117 transitions. [2020-07-01 11:15:57,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:15:57,976 INFO L688 BuchiCegarLoop]: Abstraction has 51 states and 117 transitions. [2020-07-01 11:15:57,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 117 transitions. [2020-07-01 11:15:57,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2020-07-01 11:15:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-01 11:15:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 69 transitions. [2020-07-01 11:15:57,980 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 69 transitions. [2020-07-01 11:15:57,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:15:57,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-01 11:15:57,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-01 11:15:57,984 INFO L87 Difference]: Start difference. First operand 33 states and 69 transitions. Second operand 9 states. [2020-07-01 11:15:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:15:58,133 INFO L93 Difference]: Finished difference Result 89 states and 158 transitions. [2020-07-01 11:15:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-01 11:15:58,134 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 89 states and 158 transitions. [2020-07-01 11:15:58,137 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 21 [2020-07-01 11:15:58,139 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 89 states to 69 states and 132 transitions. [2020-07-01 11:15:58,139 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-07-01 11:15:58,139 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2020-07-01 11:15:58,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 132 transitions. [2020-07-01 11:15:58,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:15:58,139 INFO L688 BuchiCegarLoop]: Abstraction has 69 states and 132 transitions. [2020-07-01 11:15:58,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states and 132 transitions. [2020-07-01 11:15:58,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51. [2020-07-01 11:15:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-01 11:15:58,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 104 transitions. [2020-07-01 11:15:58,145 INFO L711 BuchiCegarLoop]: Abstraction has 51 states and 104 transitions. [2020-07-01 11:15:58,145 INFO L591 BuchiCegarLoop]: Abstraction has 51 states and 104 transitions. [2020-07-01 11:15:58,145 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 11:15:58,145 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 104 transitions. [2020-07-01 11:15:58,146 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 16 [2020-07-01 11:15:58,146 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:15:58,146 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:15:58,147 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:15:58,147 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-07-01 11:15:58,147 INFO L794 eck$LassoCheckResult]: Stem: 600#ULTIMATE.startENTRY [39] ULTIMATE.startENTRY-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~y~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 601#L13-2 [42] L13-2-->L14: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 629#L14 [59] L14-->L15-2: Formula: (> 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 635#L15-2 [62] L15-2-->L15-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_8 v_ULTIMATE.start_main_~m~0_5) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3] 636#L15-2 [2020-07-01 11:15:58,148 INFO L796 eck$LassoCheckResult]: Loop: 636#L15-2 [61] L15-2-->L15-3: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet2_3|) InVars {ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 641#L15-3 [45] L15-3-->L14-2: Formula: (= (+ v_ULTIMATE.start_main_~x~0_6 1) v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post4] 645#L14-2 [44] L14-2-->L13-2: Formula: (= (+ v_ULTIMATE.start_main_~y~0_9 1) v_ULTIMATE.start_main_~y~0_10) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post5] 643#L13-2 [42] L13-2-->L14: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 644#L14 [58] L14-->L15-2: Formula: (< 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 646#L15-2 [62] L15-2-->L15-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_8 v_ULTIMATE.start_main_~m~0_5) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3] 636#L15-2 [2020-07-01 11:15:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:58,148 INFO L82 PathProgramCache]: Analyzing trace with hash 2127623, now seen corresponding path program 3 times [2020-07-01 11:15:58,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:58,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230905178] [2020-07-01 11:15:58,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:58,158 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:58,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:58,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1618173933, now seen corresponding path program 1 times [2020-07-01 11:15:58,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:58,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326334937] [2020-07-01 11:15:58,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:58,167 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:58,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:58,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1251818137, now seen corresponding path program 1 times [2020-07-01 11:15:58,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:58,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154457668] [2020-07-01 11:15:58,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:58,182 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:58,216 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:15:58,216 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:15:58,216 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:15:58,216 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:15:58,217 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:15:58,217 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:58,217 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:15:58,217 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:15:58,217 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 11:15:58,217 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:15:58,217 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:15:58,218 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 11:15:58,222 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 11:15:58,227 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 11:15:58,229 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 11:15:58,236 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 11:15:58,238 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 11:15:58,240 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 11:15:58,290 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:15:58,290 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:58,294 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:58,294 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:58,298 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:15:58,298 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=1} Honda state: {ULTIMATE.start_main_#t~nondet1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:58,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:58,330 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:58,366 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:15:58,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:58,448 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:15:58,450 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:15:58,450 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:15:58,450 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:15:58,450 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:15:58,450 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:15:58,450 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:58,450 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:15:58,450 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:15:58,451 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 11:15:58,451 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:15:58,451 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:15:58,452 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 11:15:58,455 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 11:15:58,460 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 11:15:58,462 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 11:15:58,468 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 11:15:58,471 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 11:15:58,473 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 11:15:58,521 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:15:58,521 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:58,523 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 11:15:58,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:58,525 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:58,525 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:58,525 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:58,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:58,526 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:58,526 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:58,528 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:58,559 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 11:15:58,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:58,561 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:58,561 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:58,561 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:58,561 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:58,562 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:58,562 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:58,565 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:15:58,568 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:15:58,569 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:58,571 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:15:58,571 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:15:58,571 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:15:58,571 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 11:15:58,600 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:15:58,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:58,617 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:15:58,618 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:58,623 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:15:58,623 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:15:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:58,650 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:15:58,651 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:58,678 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:15:58,678 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:58,680 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:15:58,680 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 11:15:58,680 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 51 states and 104 transitions. cyclomatic complexity: 61 Second operand 5 states. [2020-07-01 11:15:58,767 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 51 states and 104 transitions. cyclomatic complexity: 61. Second operand 5 states. Result 354 states and 811 transitions. Complement of second has 31 states. [2020-07-01 11:15:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 11:15:58,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 11:15:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 38 transitions. [2020-07-01 11:15:58,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 4 letters. Loop has 6 letters. [2020-07-01 11:15:58,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:58,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 10 letters. Loop has 6 letters. [2020-07-01 11:15:58,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:58,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 4 letters. Loop has 12 letters. [2020-07-01 11:15:58,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:58,771 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 354 states and 811 transitions. [2020-07-01 11:15:58,781 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-07-01 11:15:58,784 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 354 states to 201 states and 397 transitions. [2020-07-01 11:15:58,784 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-07-01 11:15:58,785 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2020-07-01 11:15:58,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 201 states and 397 transitions. [2020-07-01 11:15:58,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:15:58,785 INFO L688 BuchiCegarLoop]: Abstraction has 201 states and 397 transitions. [2020-07-01 11:15:58,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states and 397 transitions. [2020-07-01 11:15:58,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 35. [2020-07-01 11:15:58,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-01 11:15:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 65 transitions. [2020-07-01 11:15:58,791 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 65 transitions. [2020-07-01 11:15:58,791 INFO L591 BuchiCegarLoop]: Abstraction has 35 states and 65 transitions. [2020-07-01 11:15:58,791 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 11:15:58,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 65 transitions. [2020-07-01 11:15:58,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:15:58,793 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:15:58,793 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:15:58,793 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 11:15:58,793 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:15:58,794 INFO L794 eck$LassoCheckResult]: Stem: 1120#ULTIMATE.startENTRY [39] ULTIMATE.startENTRY-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~y~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 1121#L13-2 [42] L13-2-->L14: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 1138#L14 [59] L14-->L15-2: Formula: (> 0 |v_ULTIMATE.start_main_#t~nondet1_3|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 1139#L15-2 [63] L15-2-->L15-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (<= v_ULTIMATE.start_main_~y~0_8 v_ULTIMATE.start_main_~m~0_5) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3] 1130#L15-2 [61] L15-2-->L15-3: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet2_3|) InVars {ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 1131#L15-3 [45] L15-3-->L14-2: Formula: (= (+ v_ULTIMATE.start_main_~x~0_6 1) v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post4] 1152#L14-2 [44] L14-2-->L13-2: Formula: (= (+ v_ULTIMATE.start_main_~y~0_9 1) v_ULTIMATE.start_main_~y~0_10) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post5] 1151#L13-2 [42] L13-2-->L14: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 1145#L14 [51] L14-->L14-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet1_5|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_5|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 1126#L14-2 [2020-07-01 11:15:58,794 INFO L796 eck$LassoCheckResult]: Loop: 1126#L14-2 [44] L14-2-->L13-2: Formula: (= (+ v_ULTIMATE.start_main_~y~0_9 1) v_ULTIMATE.start_main_~y~0_10) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post5] 1122#L13-2 [42] L13-2-->L14: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 1123#L14 [51] L14-->L14-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet1_5|) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_5|} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1] 1126#L14-2 [2020-07-01 11:15:58,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:58,794 INFO L82 PathProgramCache]: Analyzing trace with hash 900294365, now seen corresponding path program 1 times [2020-07-01 11:15:58,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:58,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482186023] [2020-07-01 11:15:58,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:58,807 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:58,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:58,808 INFO L82 PathProgramCache]: Analyzing trace with hash 73428, now seen corresponding path program 2 times [2020-07-01 11:15:58,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:58,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457542980] [2020-07-01 11:15:58,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:15:58,813 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:15:58,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:58,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1401292168, now seen corresponding path program 2 times [2020-07-01 11:15:58,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:15:58,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621401721] [2020-07-01 11:15:58,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:15:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-01 11:15:58,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621401721] [2020-07-01 11:15:58,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023769889] [2020-07-01 11:15:58,842 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:15:58,862 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-01 11:15:58,863 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-01 11:15:58,863 INFO L264 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:15:58,864 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-01 11:15:58,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 11:15:58,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-07-01 11:15:58,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154928061] [2020-07-01 11:15:58,882 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:15:58,883 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:15:58,883 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:15:58,883 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:15:58,883 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:15:58,883 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:58,883 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:15:58,883 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:15:58,883 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 11:15:58,884 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:15:58,884 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:15:58,885 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 11:15:58,887 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 11:15:58,892 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 11:15:58,894 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 11:15:58,922 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:15:58,922 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:58,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:58,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:58,930 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:15:58,930 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:58,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:15:58,962 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:15:58,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:15:58,996 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:15:59,072 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:15:59,073 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:15:59,073 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:15:59,073 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:15:59,073 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:15:59,074 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:15:59,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:59,074 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:15:59,074 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:15:59,074 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 11:15:59,074 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:15:59,074 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:15:59,075 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 11:15:59,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:15:59,084 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 11:15:59,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:15:59,120 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:15:59,120 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:59,123 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 11:15:59,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:15:59,124 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:15:59,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:15:59,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:15:59,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:15:59,126 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:15:59,126 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:15:59,129 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:15:59,131 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 11:15:59,131 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:15:59,135 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:15:59,135 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:15:59,135 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:15:59,135 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 11:15:59,165 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:15:59,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:15:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:59,182 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:15:59,183 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:59,187 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:15:59,187 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:59,202 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 11:15:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:15:59,212 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:15:59,212 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:15:59,214 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:15:59,214 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 11:15:59,214 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 35 states and 65 transitions. cyclomatic complexity: 35 Second operand 4 states. [2020-07-01 11:15:59,285 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 35 states and 65 transitions. cyclomatic complexity: 35. Second operand 4 states. Result 138 states and 250 transitions. Complement of second has 16 states. [2020-07-01 11:15:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 11:15:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:15:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2020-07-01 11:15:59,286 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 9 letters. Loop has 3 letters. [2020-07-01 11:15:59,286 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:59,286 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 12 letters. Loop has 3 letters. [2020-07-01 11:15:59,286 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:59,286 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 9 letters. Loop has 6 letters. [2020-07-01 11:15:59,287 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:15:59,288 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 250 transitions. [2020-07-01 11:15:59,290 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:15:59,290 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 0 states and 0 transitions. [2020-07-01 11:15:59,291 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:15:59,291 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:15:59,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:15:59,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:15:59,291 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:15:59,291 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:15:59,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:15:59,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 11:15:59,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-01 11:15:59,292 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-07-01 11:15:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:15:59,292 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-01 11:15:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-01 11:15:59,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-07-01 11:15:59,294 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:15:59,294 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-07-01 11:15:59,294 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:15:59,294 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:15:59,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:15:59,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:15:59,294 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:15:59,295 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:15:59,295 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:15:59,295 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2020-07-01 11:15:59,295 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:15:59,295 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:15:59,295 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:15:59,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:15:59 BasicIcfg [2020-07-01 11:15:59,301 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:15:59,304 INFO L168 Benchmark]: Toolchain (without parser) took 5454.01 ms. Allocated memory was 649.6 MB in the beginning and 757.6 MB in the end (delta: 108.0 MB). Free memory was 563.1 MB in the beginning and 378.4 MB in the end (delta: 184.7 MB). Peak memory consumption was 292.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:15:59,304 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:15:59,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.36 ms. Allocated memory was 649.6 MB in the beginning and 692.1 MB in the end (delta: 42.5 MB). Free memory was 561.7 MB in the beginning and 656.5 MB in the end (delta: -94.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:15:59,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.88 ms. Allocated memory is still 692.1 MB. Free memory was 656.5 MB in the beginning and 655.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:15:59,305 INFO L168 Benchmark]: Boogie Preprocessor took 20.32 ms. Allocated memory is still 692.1 MB. Free memory was 655.1 MB in the beginning and 653.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:15:59,306 INFO L168 Benchmark]: RCFGBuilder took 256.07 ms. Allocated memory is still 692.1 MB. Free memory was 653.8 MB in the beginning and 637.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 50.3 GB. [2020-07-01 11:15:59,307 INFO L168 Benchmark]: BlockEncodingV2 took 71.91 ms. Allocated memory is still 692.1 MB. Free memory was 637.0 MB in the beginning and 631.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:15:59,307 INFO L168 Benchmark]: TraceAbstraction took 155.41 ms. Allocated memory is still 692.1 MB. Free memory was 631.6 MB in the beginning and 622.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:15:59,308 INFO L168 Benchmark]: BuchiAutomizer took 4617.07 ms. Allocated memory was 692.1 MB in the beginning and 757.6 MB in the end (delta: 65.5 MB). Free memory was 622.2 MB in the beginning and 378.4 MB in the end (delta: 243.8 MB). Peak memory consumption was 309.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:15:59,310 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 14 edges - StatisticsResult: Encoded RCFG 6 locations, 11 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 292.36 ms. Allocated memory was 649.6 MB in the beginning and 692.1 MB in the end (delta: 42.5 MB). Free memory was 561.7 MB in the beginning and 656.5 MB in the end (delta: -94.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.88 ms. Allocated memory is still 692.1 MB. Free memory was 656.5 MB in the beginning and 655.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.32 ms. Allocated memory is still 692.1 MB. Free memory was 655.1 MB in the beginning and 653.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 256.07 ms. Allocated memory is still 692.1 MB. Free memory was 653.8 MB in the beginning and 637.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 71.91 ms. Allocated memory is still 692.1 MB. Free memory was 637.0 MB in the beginning and 631.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 155.41 ms. Allocated memory is still 692.1 MB. Free memory was 631.6 MB in the beginning and 622.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4617.07 ms. Allocated memory was 692.1 MB in the beginning and 757.6 MB in the end (delta: 65.5 MB). Free memory was 622.2 MB in the beginning and 378.4 MB in the end (delta: 243.8 MB). Peak memory consumption was 309.4 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: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 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=6occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (2 trivial, 0 deterministic, 6 nondeterministic). One nondeterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One nondeterministic module has affine ranking function -2 * y + 2 * m + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * y + 2 * m + 1 and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 6 locations. One nondeterministic module has affine ranking function x and consists of 6 locations. One nondeterministic module has affine ranking function y and consists of 6 locations. 2 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 3.4s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 215 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 51 states and ocurred in iteration 4. Nontrivial modules had stage [6, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 44 SDtfs, 169 SDslu, 114 SDs, 0 SdLazy, 276 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq149 hnf94 smp97 dnf100 smp100 tf113 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:15:50.586 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp/BenchExec_run_FwaNFq/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:16:00.546 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check