/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 10:51:51,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:51:51,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:51:51,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:51:51,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:51:51,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:51:51,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:51:51,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:51:51,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:51:51,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:51:51,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:51:51,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:51:51,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:51:51,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:51:51,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:51:51,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:51:51,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:51:51,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:51:51,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:51:51,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:51:51,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:51:51,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:51:51,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:51:51,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:51:51,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:51:51,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:51:51,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:51:51,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:51:51,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:51:51,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:51:51,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:51:51,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:51:51,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:51:51,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:51:51,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:51:51,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:51:51,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:51:51,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:51:51,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:51:51,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:51:51,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:51:51,747 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 10:51:51,761 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:51:51,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:51:51,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:51:51,763 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:51:51,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:51:51,763 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:51:51,763 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:51:51,763 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:51:51,764 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:51:51,764 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:51:51,764 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:51:51,764 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:51:51,764 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:51:51,765 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:51:51,765 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:51:51,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:51:51,765 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:51:51,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:51:51,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:51:51,766 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:51:51,766 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:51:51,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:51:51,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:51:51,766 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:51:51,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:51:51,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:51:51,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:51:51,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:51:51,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:51:51,931 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:51:51,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:51:51,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:51:51,950 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:51:51,950 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:51:51,951 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:51:52,020 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_EMxBcn/tmp/bec9d63504ca44a09fa3ddcfba2d6746/FLAGabcd96fc3 [2020-07-01 10:51:52,363 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:51:52,364 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:51:52,371 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_EMxBcn/tmp/bec9d63504ca44a09fa3ddcfba2d6746/FLAGabcd96fc3 [2020-07-01 10:51:52,759 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_EMxBcn/tmp/bec9d63504ca44a09fa3ddcfba2d6746 [2020-07-01 10:51:52,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:51:52,772 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:51:52,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:51:52,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:51:52,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:51:52,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:51:52" (1/1) ... [2020-07-01 10:51:52,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c08031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:52, skipping insertion in model container [2020-07-01 10:51:52,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:51:52" (1/1) ... [2020-07-01 10:51:52,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:51:52,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:51:53,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:51:53,027 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:51:53,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:51:53,058 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:51:53,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:53 WrapperNode [2020-07-01 10:51:53,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:51:53,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:51:53,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:51:53,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:51:53,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:53" (1/1) ... [2020-07-01 10:51:53,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:53" (1/1) ... [2020-07-01 10:51:53,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:51:53,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:51:53,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:51:53,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:51:53,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:53" (1/1) ... [2020-07-01 10:51:53,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:53" (1/1) ... [2020-07-01 10:51:53,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:53" (1/1) ... [2020-07-01 10:51:53,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:53" (1/1) ... [2020-07-01 10:51:53,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:53" (1/1) ... [2020-07-01 10:51:53,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:53" (1/1) ... [2020-07-01 10:51:53,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:53" (1/1) ... [2020-07-01 10:51:53,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:51:53,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:51:53,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:51:53,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:51:53,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:53" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:51:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:51:53,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:51:53,336 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:51:53,336 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:51:53,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:51:53 BoogieIcfgContainer [2020-07-01 10:51:53,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:51:53,340 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:51:53,340 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:51:53,342 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:51:53,343 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:51:53" (1/1) ... [2020-07-01 10:51:53,355 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-07-01 10:51:53,356 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:51:53,357 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:51:53,358 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:51:53,358 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:51:53,360 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:51:53,360 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:51:53,361 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:51:53,375 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:51:53,390 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 10:51:53,394 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:51:53,396 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:51:53,407 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 10:51:53,409 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 10:51:53,410 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:51:53,411 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:51:53,411 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:51:53,412 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:51:53,412 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 7 edges [2020-07-01 10:51:53,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:51:53 BasicIcfg [2020-07-01 10:51:53,412 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:51:53,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:51:53,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:51:53,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:51:53,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:51:52" (1/4) ... [2020-07-01 10:51:53,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0cba88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:51:53, skipping insertion in model container [2020-07-01 10:51:53,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:53" (2/4) ... [2020-07-01 10:51:53,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0cba88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:51:53, skipping insertion in model container [2020-07-01 10:51:53,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:51:53" (3/4) ... [2020-07-01 10:51:53,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0cba88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:51:53, skipping insertion in model container [2020-07-01 10:51:53,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:51:53" (4/4) ... [2020-07-01 10:51:53,421 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:51:53,431 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:51:53,438 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:51:53,452 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:51:53,475 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:51:53,475 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:51:53,475 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:51:53,475 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:51:53,475 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:51:53,476 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:51:53,476 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:51:53,476 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:51:53,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 10:51:53,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:51:53,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 10:51:53,549 INFO L271 CegarLoopResult]: At program point L18-1(lines 12 22) the Hoare annotation is: true [2020-07-01 10:51:53,550 INFO L268 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2020-07-01 10:51:53,550 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:51:53,550 INFO L268 CegarLoopResult]: For program point L14-2(lines 12 22) no Hoare annotation was computed. [2020-07-01 10:51:53,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:51:53 BasicIcfg [2020-07-01 10:51:53,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:51:53,559 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:51:53,560 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:51:53,563 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:51:53,564 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:51:53,564 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:51:52" (1/5) ... [2020-07-01 10:51:53,565 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ec670f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:51:53, skipping insertion in model container [2020-07-01 10:51:53,565 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:51:53,565 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:51:53" (2/5) ... [2020-07-01 10:51:53,566 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ec670f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:51:53, skipping insertion in model container [2020-07-01 10:51:53,566 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:51:53,566 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:51:53" (3/5) ... [2020-07-01 10:51:53,566 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ec670f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:51:53, skipping insertion in model container [2020-07-01 10:51:53,566 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:51:53,567 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:51:53" (4/5) ... [2020-07-01 10:51:53,567 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ec670f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:51:53, skipping insertion in model container [2020-07-01 10:51:53,567 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:51:53,567 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:51:53" (5/5) ... [2020-07-01 10:51:53,569 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:51:53,598 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:51:53,598 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:51:53,599 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:51:53,599 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:51:53,599 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:51:53,599 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:51:53,599 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:51:53,599 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:51:53,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 10:51:53,620 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:51:53,620 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:51:53,620 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:51:53,625 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:51:53,625 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:51:53,625 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:51:53,626 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 10:51:53,626 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:51:53,626 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:51:53,626 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:51:53,627 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:51:53,627 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:51:53,632 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [31] ULTIMATE.startENTRY-->L18-1: Formula: (and (= v_ULTIMATE.start_main_~a~0_1 1) (= v_ULTIMATE.start_main_~c~0_1 1) (= v_ULTIMATE.start_main_~MAX~0_1 1000) (= v_ULTIMATE.start_main_~b~0_1 1)) InVars {} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_1, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0, ULTIMATE.start_main_~MAX~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~b~0] 4#L18-1true [2020-07-01 10:51:53,632 INFO L796 eck$LassoCheckResult]: Loop: 4#L18-1true [48] L18-1-->L14: Formula: (and (<= v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~MAX~0_9) (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~a~0_8 1)) (< (* (* v_ULTIMATE.start_main_~a~0_8 v_ULTIMATE.start_main_~a~0_8) v_ULTIMATE.start_main_~a~0_8) (+ (* (* v_ULTIMATE.start_main_~b~0_10 v_ULTIMATE.start_main_~b~0_10) v_ULTIMATE.start_main_~b~0_10) (* (* v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~c~0_9) v_ULTIMATE.start_main_~c~0_9)))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 6#L14true [39] L14-->L14-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_11 (+ v_ULTIMATE.start_main_~b~0_12 1)) (= v_ULTIMATE.start_main_~a~0_9 1) (< v_ULTIMATE.start_main_~MAX~0_10 v_ULTIMATE.start_main_~a~0_10)) InVars {ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_10, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_12} OutVars{ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_9, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0, ULTIMATE.start_main_~b~0] 5#L14-2true [35] L14-2-->L18-1: Formula: (and (< v_ULTIMATE.start_main_~MAX~0_6 v_ULTIMATE.start_main_~b~0_7) (= v_ULTIMATE.start_main_~b~0_6 1) (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~b~0] 4#L18-1true [2020-07-01 10:51:53,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:51:53,639 INFO L82 PathProgramCache]: Analyzing trace with hash 62, now seen corresponding path program 1 times [2020-07-01 10:51:53,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:51:53,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959203766] [2020-07-01 10:51:53,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:51:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:51:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:51:53,722 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:51:53,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:51:53,724 INFO L82 PathProgramCache]: Analyzing trace with hash 77163, now seen corresponding path program 1 times [2020-07-01 10:51:53,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:51:53,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436052180] [2020-07-01 10:51:53,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:51:53,730 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 10:51:53,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963252666] [2020-07-01 10:51:53,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:51:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:51:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:51:53,774 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:51:53,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:51:53,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1894414, now seen corresponding path program 1 times [2020-07-01 10:51:53,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:51:53,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465599370] [2020-07-01 10:51:53,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:51:53,781 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 10:51:53,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779379566] [2020-07-01 10:51:53,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:51:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:51:53,813 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:51:53,814 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:51:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:51:53,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465599370] [2020-07-01 10:51:53,873 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-01 10:51:53,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779379566] [2020-07-01 10:51:53,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:51:53,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 10:51:53,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763358477] [2020-07-01 10:51:58,485 WARN L192 SmtUtils]: Spent 4.60 s on a formula simplification that was a NOOP. DAG size: 27 [2020-07-01 10:52:00,881 WARN L192 SmtUtils]: Spent 2.39 s on a formula simplification that was a NOOP. DAG size: 23 [2020-07-01 10:52:00,893 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:52:00,894 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:52:00,894 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:52:00,894 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:52:00,894 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:52:00,894 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:52:00,894 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:52:00,895 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:52:00,895 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:52:00,895 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:52:00,895 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:52:00,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:52:00,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:52:00,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:52:02,122 WARN L192 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 23 [2020-07-01 10:52:08,297 WARN L192 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-01 10:52:13,629 WARN L192 SmtUtils]: Spent 5.32 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-01 10:52:13,637 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:52:13,638 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:52:13,646 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:52:13,646 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:52:13,655 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:52:13,655 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:52:13,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:52:13,690 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:52:13,695 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:52:13,695 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:52:13,729 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:52:13,730 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:52:13,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:52:13,772 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:52:13,785 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:52:13,815 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:52:13,815 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:52:13,815 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:52:13,816 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:52:13,816 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:52:13,816 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:52:13,816 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:52:13,816 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:52:13,816 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:52:13,816 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:52:13,816 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:52:13,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:52:13,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:52:13,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:52:14,651 WARN L192 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-01 10:52:16,878 WARN L192 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-01 10:52:27,717 WARN L192 SmtUtils]: Spent 10.83 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-01 10:52:27,718 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:52:27,724 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:52:27,730 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:52:27,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:52:27,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:52:27,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:52:27,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:52:27,740 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:52:27,740 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:52:27,745 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:52:27,780 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:52:27,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:52:27,782 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:52:27,782 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:52:27,782 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:52:27,786 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:52:27,786 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:52:27,791 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:52:27,827 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:52:27,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:52:27,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:52:27,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:52:27,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:52:27,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:52:27,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:52:27,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:52:27,838 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:52:27,844 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:52:27,844 INFO L444 ModelExtractionUtils]: 2 out of 6 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:52:27,855 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:52:27,855 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:52:27,855 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:52:27,856 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~MAX~0) = -2*ULTIMATE.start_main_~c~0 + 2*ULTIMATE.start_main_~MAX~0 + 1 Supporting invariants [] [2020-07-01 10:52:27,890 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:52:27,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:52:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:52:27,923 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:52:27,924 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:52:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:52:27,933 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:52:27,933 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:52:27,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:52:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:52:27,997 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:52:27,997 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:52:28,053 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 10:52:28,059 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 10:52:28,061 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 3 states. [2020-07-01 10:52:28,157 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 3 states. Result 10 states and 22 transitions. Complement of second has 5 states. [2020-07-01 10:52:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 2 accepting loop states [2020-07-01 10:52:28,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 10:52:28,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-07-01 10:52:28,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 10:52:28,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:52:28,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 10:52:28,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:52:28,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 10:52:28,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:52:28,173 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 22 transitions. [2020-07-01 10:52:28,174 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:52:28,180 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 22 transitions. [2020-07-01 10:52:28,181 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 10:52:28,182 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-07-01 10:52:28,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 22 transitions. [2020-07-01 10:52:28,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:52:28,183 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 22 transitions. [2020-07-01 10:52:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 22 transitions. [2020-07-01 10:52:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-07-01 10:52:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 10:52:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 20 transitions. [2020-07-01 10:52:28,214 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 20 transitions. [2020-07-01 10:52:28,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:52:28,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 10:52:28,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 10:52:28,217 INFO L87 Difference]: Start difference. First operand 9 states and 20 transitions. Second operand 4 states. [2020-07-01 10:52:28,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:52:28,277 INFO L93 Difference]: Finished difference Result 16 states and 33 transitions. [2020-07-01 10:52:28,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 10:52:28,282 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 33 transitions. [2020-07-01 10:52:28,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:52:28,284 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 33 transitions. [2020-07-01 10:52:28,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-07-01 10:52:28,285 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-01 10:52:28,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 33 transitions. [2020-07-01 10:52:28,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:52:28,285 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 33 transitions. [2020-07-01 10:52:28,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 33 transitions. [2020-07-01 10:52:28,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2020-07-01 10:52:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-01 10:52:28,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 22 transitions. [2020-07-01 10:52:28,288 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 22 transitions. [2020-07-01 10:52:28,288 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 22 transitions. [2020-07-01 10:52:28,288 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 10:52:28,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 22 transitions. [2020-07-01 10:52:28,289 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:52:28,289 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:52:28,289 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:52:28,290 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 10:52:28,290 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:52:28,290 INFO L794 eck$LassoCheckResult]: Stem: 99#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L18-1: Formula: (and (= v_ULTIMATE.start_main_~a~0_1 1) (= v_ULTIMATE.start_main_~c~0_1 1) (= v_ULTIMATE.start_main_~MAX~0_1 1000) (= v_ULTIMATE.start_main_~b~0_1 1)) InVars {} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_1, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0, ULTIMATE.start_main_~MAX~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~b~0] 100#L18-1 [47] L18-1-->L14: Formula: (and (<= v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~MAX~0_9) (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~a~0_8 1)) (> (* (* v_ULTIMATE.start_main_~a~0_8 v_ULTIMATE.start_main_~a~0_8) v_ULTIMATE.start_main_~a~0_8) (+ (* (* v_ULTIMATE.start_main_~b~0_10 v_ULTIMATE.start_main_~b~0_10) v_ULTIMATE.start_main_~b~0_10) (* (* v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~c~0_9) v_ULTIMATE.start_main_~c~0_9)))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 108#L14 [43] L14-->L14-2: Formula: (>= v_ULTIMATE.start_main_~MAX~0_11 v_ULTIMATE.start_main_~a~0_11) InVars {ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_11, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_11} OutVars{ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_11, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_11} AuxVars[] AssignedVars[] 105#L14-2 [2020-07-01 10:52:28,291 INFO L796 eck$LassoCheckResult]: Loop: 105#L14-2 [44] L14-2-->L18-1: Formula: (>= v_ULTIMATE.start_main_~MAX~0_7 v_ULTIMATE.start_main_~b~0_8) InVars {ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} AuxVars[] AssignedVars[] 101#L18-1 [48] L18-1-->L14: Formula: (and (<= v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~MAX~0_9) (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~a~0_8 1)) (< (* (* v_ULTIMATE.start_main_~a~0_8 v_ULTIMATE.start_main_~a~0_8) v_ULTIMATE.start_main_~a~0_8) (+ (* (* v_ULTIMATE.start_main_~b~0_10 v_ULTIMATE.start_main_~b~0_10) v_ULTIMATE.start_main_~b~0_10) (* (* v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~c~0_9) v_ULTIMATE.start_main_~c~0_9)))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 102#L14 [39] L14-->L14-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_11 (+ v_ULTIMATE.start_main_~b~0_12 1)) (= v_ULTIMATE.start_main_~a~0_9 1) (< v_ULTIMATE.start_main_~MAX~0_10 v_ULTIMATE.start_main_~a~0_10)) InVars {ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_10, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_12} OutVars{ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_9, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0, ULTIMATE.start_main_~b~0] 105#L14-2 [2020-07-01 10:52:28,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:52:28,291 INFO L82 PathProgramCache]: Analyzing trace with hash 61082, now seen corresponding path program 1 times [2020-07-01 10:52:28,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:52:28,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483997168] [2020-07-01 10:52:28,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:52:28,296 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 10:52:28,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421349638] [2020-07-01 10:52:28,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:52:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:52:28,323 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 10:52:28,323 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:52:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:52:28,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483997168] [2020-07-01 10:52:28,346 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-01 10:52:28,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421349638] [2020-07-01 10:52:28,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:52:28,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:52:28,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584810773] [2020-07-01 10:52:28,347 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 10:52:28,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:52:28,348 INFO L82 PathProgramCache]: Analyzing trace with hash 73602, now seen corresponding path program 1 times [2020-07-01 10:52:28,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:52:28,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027378134] [2020-07-01 10:52:28,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:52:28,355 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 10:52:28,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755198708] [2020-07-01 10:52:28,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:52:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:52:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:52:28,386 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:52:41,177 WARN L192 SmtUtils]: Spent 12.79 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 10:52:52,559 WARN L192 SmtUtils]: Spent 11.38 s on a formula simplification that was a NOOP. DAG size: 20 [2020-07-01 10:52:52,561 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:52:52,561 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:52:52,562 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:52:52,562 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:52:52,562 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:52:52,562 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:52:52,562 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:52:52,562 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:52:52,562 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:52:52,562 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:52:52,562 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:52:52,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:52:52,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:52:52,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:52:53,880 WARN L192 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 20 [2020-07-01 10:52:55,195 WARN L192 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 10:52:56,421 WARN L192 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 10:52:56,423 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:52:56,423 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 10:52:56,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:52:56,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:52:56,434 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:52:56,434 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:52:56,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:52:56,468 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:52:56,473 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:52:56,473 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:52:56,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:52:56,507 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:52:56,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:52:56,546 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:52:56,554 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:52:56,585 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:52:56,585 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:52:56,585 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:52:56,585 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:52:56,585 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:52:56,585 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:52:56,586 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:52:56,586 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:52:56,586 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:52:56,586 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:52:56,586 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:52:56,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:52:56,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:52:56,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:01,458 WARN L192 SmtUtils]: Spent 4.86 s on a formula simplification that was a NOOP. DAG size: 20 [2020-07-01 10:53:06,666 WARN L192 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 10:53:14,531 WARN L192 SmtUtils]: Spent 7.85 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 10:53:14,546 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:53:14,546 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:53:14,552 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:53:14,554 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:53:14,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:53:14,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:53:14,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:53:14,558 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:53:14,558 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:53:14,562 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:53:14,595 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:53:14,597 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:53:14,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:53:14,597 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:53:14,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:53:14,600 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:53:14,600 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:53:14,604 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:53:14,637 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:53:14,640 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:53:14,640 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:53:14,640 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:53:14,640 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:53:14,640 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:53:14,643 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:53:14,643 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:53:14,647 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:53:14,652 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:53:14,652 INFO L444 ModelExtractionUtils]: 2 out of 6 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:53:14,655 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:53:14,655 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:53:14,656 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:53:14,656 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~MAX~0, ULTIMATE.start_main_~b~0) = 2*ULTIMATE.start_main_~MAX~0 - 2*ULTIMATE.start_main_~b~0 + 1 Supporting invariants [] [2020-07-01 10:53:14,687 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:53:14,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:53:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:14,715 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:53:14,715 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:14,722 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:53:14,722 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:53:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:14,753 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:53:14,754 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:14,798 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 10:53:14,799 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 10:53:14,799 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 11 states and 22 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-07-01 10:53:14,851 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 11 states and 22 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 48 states and 89 transitions. Complement of second has 12 states. [2020-07-01 10:53:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 10:53:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 10:53:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-07-01 10:53:14,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 3 letters. Loop has 3 letters. [2020-07-01 10:53:14,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:53:14,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 6 letters. Loop has 3 letters. [2020-07-01 10:53:14,853 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:53:14,853 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 3 letters. Loop has 6 letters. [2020-07-01 10:53:14,853 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:53:14,854 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 89 transitions. [2020-07-01 10:53:14,857 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-07-01 10:53:14,858 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 23 states and 42 transitions. [2020-07-01 10:53:14,858 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-07-01 10:53:14,858 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-07-01 10:53:14,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 42 transitions. [2020-07-01 10:53:14,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:53:14,859 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 42 transitions. [2020-07-01 10:53:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 42 transitions. [2020-07-01 10:53:14,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-01 10:53:14,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-01 10:53:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 42 transitions. [2020-07-01 10:53:14,862 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 42 transitions. [2020-07-01 10:53:14,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:53:14,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:53:14,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:53:14,862 INFO L87 Difference]: Start difference. First operand 23 states and 42 transitions. Second operand 3 states. [2020-07-01 10:53:14,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:53:14,879 INFO L93 Difference]: Finished difference Result 23 states and 40 transitions. [2020-07-01 10:53:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:53:14,880 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 40 transitions. [2020-07-01 10:53:14,882 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-07-01 10:53:14,882 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 40 transitions. [2020-07-01 10:53:14,882 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-07-01 10:53:14,883 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-07-01 10:53:14,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 40 transitions. [2020-07-01 10:53:14,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:53:14,883 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 40 transitions. [2020-07-01 10:53:14,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 40 transitions. [2020-07-01 10:53:14,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-01 10:53:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-01 10:53:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 40 transitions. [2020-07-01 10:53:14,886 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 40 transitions. [2020-07-01 10:53:14,886 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 40 transitions. [2020-07-01 10:53:14,886 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 10:53:14,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 40 transitions. [2020-07-01 10:53:14,887 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-07-01 10:53:14,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:53:14,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:53:14,888 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 10:53:14,888 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:53:14,888 INFO L794 eck$LassoCheckResult]: Stem: 264#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L18-1: Formula: (and (= v_ULTIMATE.start_main_~a~0_1 1) (= v_ULTIMATE.start_main_~c~0_1 1) (= v_ULTIMATE.start_main_~MAX~0_1 1000) (= v_ULTIMATE.start_main_~b~0_1 1)) InVars {} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_1, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0, ULTIMATE.start_main_~MAX~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~b~0] 265#L18-1 [48] L18-1-->L14: Formula: (and (<= v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~MAX~0_9) (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~a~0_8 1)) (< (* (* v_ULTIMATE.start_main_~a~0_8 v_ULTIMATE.start_main_~a~0_8) v_ULTIMATE.start_main_~a~0_8) (+ (* (* v_ULTIMATE.start_main_~b~0_10 v_ULTIMATE.start_main_~b~0_10) v_ULTIMATE.start_main_~b~0_10) (* (* v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~c~0_9) v_ULTIMATE.start_main_~c~0_9)))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 267#L14 [43] L14-->L14-2: Formula: (>= v_ULTIMATE.start_main_~MAX~0_11 v_ULTIMATE.start_main_~a~0_11) InVars {ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_11, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_11} OutVars{ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_11, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_11} AuxVars[] AssignedVars[] 282#L14-2 [44] L14-2-->L18-1: Formula: (>= v_ULTIMATE.start_main_~MAX~0_7 v_ULTIMATE.start_main_~b~0_8) InVars {ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} AuxVars[] AssignedVars[] 279#L18-1 [2020-07-01 10:53:14,888 INFO L796 eck$LassoCheckResult]: Loop: 279#L18-1 [48] L18-1-->L14: Formula: (and (<= v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~MAX~0_9) (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~a~0_8 1)) (< (* (* v_ULTIMATE.start_main_~a~0_8 v_ULTIMATE.start_main_~a~0_8) v_ULTIMATE.start_main_~a~0_8) (+ (* (* v_ULTIMATE.start_main_~b~0_10 v_ULTIMATE.start_main_~b~0_10) v_ULTIMATE.start_main_~b~0_10) (* (* v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~c~0_9) v_ULTIMATE.start_main_~c~0_9)))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 274#L14 [43] L14-->L14-2: Formula: (>= v_ULTIMATE.start_main_~MAX~0_11 v_ULTIMATE.start_main_~a~0_11) InVars {ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_11, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_11} OutVars{ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_11, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_11} AuxVars[] AssignedVars[] 275#L14-2 [44] L14-2-->L18-1: Formula: (>= v_ULTIMATE.start_main_~MAX~0_7 v_ULTIMATE.start_main_~b~0_8) InVars {ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} AuxVars[] AssignedVars[] 279#L18-1 [2020-07-01 10:53:14,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:53:14,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1894547, now seen corresponding path program 1 times [2020-07-01 10:53:14,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:53:14,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844330165] [2020-07-01 10:53:14,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:53:14,893 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 10:53:14,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234313527] [2020-07-01 10:53:14,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:53:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:53:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:53:14,913 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:53:14,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:53:14,914 INFO L82 PathProgramCache]: Analyzing trace with hash 77296, now seen corresponding path program 1 times [2020-07-01 10:53:14,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:53:14,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763357404] [2020-07-01 10:53:14,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:53:14,917 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 10:53:14,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1824389490] [2020-07-01 10:53:14,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:53:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:53:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:53:14,938 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:53:14,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:53:14,938 INFO L82 PathProgramCache]: Analyzing trace with hash 605922334, now seen corresponding path program 2 times [2020-07-01 10:53:14,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:53:14,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685326791] [2020-07-01 10:53:14,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:53:14,942 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 10:53:14,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737864862] [2020-07-01 10:53:14,942 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:53:14,965 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-01 10:53:14,965 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-01 10:53:14,966 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 10:53:14,967 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:53:14,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685326791] [2020-07-01 10:53:14,989 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-01 10:53:14,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737864862] [2020-07-01 10:53:14,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:53:14,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 10:53:14,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722129808] [2020-07-01 10:53:15,481 WARN L192 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-01 10:53:15,482 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:53:15,482 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:53:15,483 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:53:15,483 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:53:15,483 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:53:15,483 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:53:15,483 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:53:15,483 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:53:15,483 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 10:53:15,483 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:53:15,484 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:53:15,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:16,460 WARN L192 SmtUtils]: Spent 971.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-01 10:53:16,460 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 10:53:16,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:16,528 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:53:16,528 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:53:16,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:53:16,544 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:53:16,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:53:16,582 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:53:16,589 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:53:16,619 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:53:16,620 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:53:16,620 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:53:16,620 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:53:16,620 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:53:16,620 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:53:16,620 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:53:16,620 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:53:16,620 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 10:53:16,620 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:53:16,621 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:53:16,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:17,436 WARN L192 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-01 10:53:17,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:17,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:17,516 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:53:17,517 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:53:17,521 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:53:17,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:53:17,524 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:53:17,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:53:17,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:53:17,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:53:17,525 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:53:17,526 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:53:17,529 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:53:17,533 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 10:53:17,533 INFO L444 ModelExtractionUtils]: 2 out of 6 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:53:17,537 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:53:17,537 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:53:17,537 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:53:17,537 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~MAX~0, ULTIMATE.start_main_~a~0) = 1*ULTIMATE.start_main_~MAX~0 - 1*ULTIMATE.start_main_~a~0 Supporting invariants [] [2020-07-01 10:53:17,567 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:53:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:53:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:17,586 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:53:17,587 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:17,599 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:53:17,599 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:53:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:17,635 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:53:17,636 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:17,637 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 10:53:17,638 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 10:53:17,638 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 23 states and 40 transitions. cyclomatic complexity: 21 Second operand 4 states. [2020-07-01 10:53:17,848 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 23 states and 40 transitions. cyclomatic complexity: 21. Second operand 4 states. Result 69 states and 121 transitions. Complement of second has 14 states. [2020-07-01 10:53:17,848 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 10:53:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 10:53:17,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-07-01 10:53:17,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 10:53:17,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:53:17,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 3 letters. [2020-07-01 10:53:17,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:53:17,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 4 letters. Loop has 6 letters. [2020-07-01 10:53:17,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:53:17,852 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 121 transitions. [2020-07-01 10:53:17,854 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:53:17,855 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 28 states and 50 transitions. [2020-07-01 10:53:17,855 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 10:53:17,856 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-01 10:53:17,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 50 transitions. [2020-07-01 10:53:17,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:53:17,856 INFO L688 BuchiCegarLoop]: Abstraction has 28 states and 50 transitions. [2020-07-01 10:53:17,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 50 transitions. [2020-07-01 10:53:17,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 16. [2020-07-01 10:53:17,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-01 10:53:17,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 29 transitions. [2020-07-01 10:53:17,858 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 29 transitions. [2020-07-01 10:53:17,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:53:17,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 10:53:17,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 10:53:17,859 INFO L87 Difference]: Start difference. First operand 16 states and 29 transitions. Second operand 4 states. [2020-07-01 10:53:17,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:53:17,885 INFO L93 Difference]: Finished difference Result 22 states and 37 transitions. [2020-07-01 10:53:17,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 10:53:17,887 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 37 transitions. [2020-07-01 10:53:17,887 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:53:17,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 37 transitions. [2020-07-01 10:53:17,888 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 10:53:17,888 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 10:53:17,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 37 transitions. [2020-07-01 10:53:17,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:53:17,889 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 37 transitions. [2020-07-01 10:53:17,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 37 transitions. [2020-07-01 10:53:17,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-07-01 10:53:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-01 10:53:17,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 36 transitions. [2020-07-01 10:53:17,891 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 36 transitions. [2020-07-01 10:53:17,891 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 36 transitions. [2020-07-01 10:53:17,891 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 10:53:17,891 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 36 transitions. [2020-07-01 10:53:17,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:53:17,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:53:17,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:53:17,893 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-07-01 10:53:17,893 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:53:17,893 INFO L794 eck$LassoCheckResult]: Stem: 478#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L18-1: Formula: (and (= v_ULTIMATE.start_main_~a~0_1 1) (= v_ULTIMATE.start_main_~c~0_1 1) (= v_ULTIMATE.start_main_~MAX~0_1 1000) (= v_ULTIMATE.start_main_~b~0_1 1)) InVars {} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_1, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0, ULTIMATE.start_main_~MAX~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~b~0] 479#L18-1 [48] L18-1-->L14: Formula: (and (<= v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~MAX~0_9) (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~a~0_8 1)) (< (* (* v_ULTIMATE.start_main_~a~0_8 v_ULTIMATE.start_main_~a~0_8) v_ULTIMATE.start_main_~a~0_8) (+ (* (* v_ULTIMATE.start_main_~b~0_10 v_ULTIMATE.start_main_~b~0_10) v_ULTIMATE.start_main_~b~0_10) (* (* v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~c~0_9) v_ULTIMATE.start_main_~c~0_9)))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 480#L14 [43] L14-->L14-2: Formula: (>= v_ULTIMATE.start_main_~MAX~0_11 v_ULTIMATE.start_main_~a~0_11) InVars {ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_11, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_11} OutVars{ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_11, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_11} AuxVars[] AssignedVars[] 498#L14-2 [35] L14-2-->L18-1: Formula: (and (< v_ULTIMATE.start_main_~MAX~0_6 v_ULTIMATE.start_main_~b~0_7) (= v_ULTIMATE.start_main_~b~0_6 1) (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~b~0] 490#L18-1 [47] L18-1-->L14: Formula: (and (<= v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~MAX~0_9) (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~a~0_8 1)) (> (* (* v_ULTIMATE.start_main_~a~0_8 v_ULTIMATE.start_main_~a~0_8) v_ULTIMATE.start_main_~a~0_8) (+ (* (* v_ULTIMATE.start_main_~b~0_10 v_ULTIMATE.start_main_~b~0_10) v_ULTIMATE.start_main_~b~0_10) (* (* v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~c~0_9) v_ULTIMATE.start_main_~c~0_9)))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 488#L14 [2020-07-01 10:53:17,893 INFO L796 eck$LassoCheckResult]: Loop: 488#L14 [39] L14-->L14-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_11 (+ v_ULTIMATE.start_main_~b~0_12 1)) (= v_ULTIMATE.start_main_~a~0_9 1) (< v_ULTIMATE.start_main_~MAX~0_10 v_ULTIMATE.start_main_~a~0_10)) InVars {ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_10, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_12} OutVars{ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_9, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0, ULTIMATE.start_main_~b~0] 484#L14-2 [44] L14-2-->L18-1: Formula: (>= v_ULTIMATE.start_main_~MAX~0_7 v_ULTIMATE.start_main_~b~0_8) InVars {ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} AuxVars[] AssignedVars[] 485#L18-1 [48] L18-1-->L14: Formula: (and (<= v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~MAX~0_9) (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~a~0_8 1)) (< (* (* v_ULTIMATE.start_main_~a~0_8 v_ULTIMATE.start_main_~a~0_8) v_ULTIMATE.start_main_~a~0_8) (+ (* (* v_ULTIMATE.start_main_~b~0_10 v_ULTIMATE.start_main_~b~0_10) v_ULTIMATE.start_main_~b~0_10) (* (* v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~c~0_9) v_ULTIMATE.start_main_~c~0_9)))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 488#L14 [2020-07-01 10:53:17,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:53:17,894 INFO L82 PathProgramCache]: Analyzing trace with hash 58730725, now seen corresponding path program 1 times [2020-07-01 10:53:17,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:53:17,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722909299] [2020-07-01 10:53:17,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:53:17,898 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 10:53:17,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427860632] [2020-07-01 10:53:17,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:53:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:17,918 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 10:53:17,918 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:17,928 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 10:53:17,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722909299] [2020-07-01 10:53:17,929 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-01 10:53:17,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427860632] [2020-07-01 10:53:17,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:53:17,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:53:17,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260623858] [2020-07-01 10:53:17,930 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 10:53:17,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:53:17,930 INFO L82 PathProgramCache]: Analyzing trace with hash 68682, now seen corresponding path program 2 times [2020-07-01 10:53:17,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:53:17,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391342065] [2020-07-01 10:53:17,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:53:17,937 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 10:53:17,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115372825] [2020-07-01 10:53:17,937 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:53:17,956 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-07-01 10:53:17,956 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-01 10:53:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:53:17,960 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:53:18,037 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:53:18,037 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:53:18,038 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:53:18,038 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:53:18,038 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:53:18,038 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:53:18,038 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:53:18,038 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:53:18,038 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 10:53:18,038 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:53:18,039 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:53:18,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:18,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:18,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:18,244 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-01 10:53:18,324 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:53:18,324 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:53:18,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:53:18,328 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:53:18,366 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:53:18,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:53:18,373 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:53:18,404 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:53:18,404 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:53:18,404 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:53:18,404 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:53:18,404 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:53:18,404 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:53:18,405 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:53:18,405 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:53:18,405 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 10:53:18,405 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:53:18,405 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:53:18,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:18,452 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 10:53:18,455 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 10:53:18,616 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:53:18,616 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:53:18,621 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:53:18,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:53:18,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:53:18,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:53:18,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:53:18,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:53:18,625 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:53:18,625 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:53:18,629 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:53:18,633 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 10:53:18,634 INFO L444 ModelExtractionUtils]: 2 out of 6 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 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:53:18,637 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:53:18,637 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:53:18,638 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:53:18,638 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0, ULTIMATE.start_main_~MAX~0) = -1*ULTIMATE.start_main_~b~0 + 1*ULTIMATE.start_main_~MAX~0 Supporting invariants [] [2020-07-01 10:53:18,668 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:53:18,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:53:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:18,688 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:53:18,689 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:18,693 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:53:18,694 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:53:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:18,724 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:53:18,724 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:18,726 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 10:53:18,726 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 10:53:18,726 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 21 states and 36 transitions. cyclomatic complexity: 18 Second operand 4 states. [2020-07-01 10:53:18,811 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 21 states and 36 transitions. cyclomatic complexity: 18. Second operand 4 states. Result 196 states and 344 transitions. Complement of second has 39 states. [2020-07-01 10:53:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 10:53:18,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 10:53:18,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 27 transitions. [2020-07-01 10:53:18,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 27 transitions. Stem has 5 letters. Loop has 3 letters. [2020-07-01 10:53:18,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:53:18,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 27 transitions. Stem has 8 letters. Loop has 3 letters. [2020-07-01 10:53:18,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:53:18,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 27 transitions. Stem has 5 letters. Loop has 6 letters. [2020-07-01 10:53:18,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:53:18,814 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 196 states and 344 transitions. [2020-07-01 10:53:18,820 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:53:18,821 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 196 states to 60 states and 102 transitions. [2020-07-01 10:53:18,821 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 10:53:18,821 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 10:53:18,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 102 transitions. [2020-07-01 10:53:18,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:53:18,822 INFO L688 BuchiCegarLoop]: Abstraction has 60 states and 102 transitions. [2020-07-01 10:53:18,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 102 transitions. [2020-07-01 10:53:18,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 25. [2020-07-01 10:53:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-01 10:53:18,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 43 transitions. [2020-07-01 10:53:18,825 INFO L711 BuchiCegarLoop]: Abstraction has 25 states and 43 transitions. [2020-07-01 10:53:18,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:53:18,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:53:18,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:53:18,826 INFO L87 Difference]: Start difference. First operand 25 states and 43 transitions. Second operand 3 states. [2020-07-01 10:53:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:53:18,857 INFO L93 Difference]: Finished difference Result 26 states and 44 transitions. [2020-07-01 10:53:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:53:18,859 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 44 transitions. [2020-07-01 10:53:18,859 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:53:18,860 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 26 states and 44 transitions. [2020-07-01 10:53:18,860 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 10:53:18,860 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 10:53:18,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 44 transitions. [2020-07-01 10:53:18,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:53:18,861 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 44 transitions. [2020-07-01 10:53:18,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 44 transitions. [2020-07-01 10:53:18,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-07-01 10:53:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-01 10:53:18,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 40 transitions. [2020-07-01 10:53:18,863 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 40 transitions. [2020-07-01 10:53:18,863 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 40 transitions. [2020-07-01 10:53:18,863 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 10:53:18,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 40 transitions. [2020-07-01 10:53:18,864 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:53:18,864 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:53:18,864 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:53:18,865 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2020-07-01 10:53:18,865 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:53:18,865 INFO L794 eck$LassoCheckResult]: Stem: 850#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L18-1: Formula: (and (= v_ULTIMATE.start_main_~a~0_1 1) (= v_ULTIMATE.start_main_~c~0_1 1) (= v_ULTIMATE.start_main_~MAX~0_1 1000) (= v_ULTIMATE.start_main_~b~0_1 1)) InVars {} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_1, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0, ULTIMATE.start_main_~MAX~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~b~0] 851#L18-1 [48] L18-1-->L14: Formula: (and (<= v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~MAX~0_9) (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~a~0_8 1)) (< (* (* v_ULTIMATE.start_main_~a~0_8 v_ULTIMATE.start_main_~a~0_8) v_ULTIMATE.start_main_~a~0_8) (+ (* (* v_ULTIMATE.start_main_~b~0_10 v_ULTIMATE.start_main_~b~0_10) v_ULTIMATE.start_main_~b~0_10) (* (* v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~c~0_9) v_ULTIMATE.start_main_~c~0_9)))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 852#L14 [43] L14-->L14-2: Formula: (>= v_ULTIMATE.start_main_~MAX~0_11 v_ULTIMATE.start_main_~a~0_11) InVars {ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_11, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_11} OutVars{ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_11, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_11} AuxVars[] AssignedVars[] 860#L14-2 [44] L14-2-->L18-1: Formula: (>= v_ULTIMATE.start_main_~MAX~0_7 v_ULTIMATE.start_main_~b~0_8) InVars {ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} AuxVars[] AssignedVars[] 853#L18-1 [47] L18-1-->L14: Formula: (and (<= v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~MAX~0_9) (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~a~0_8 1)) (> (* (* v_ULTIMATE.start_main_~a~0_8 v_ULTIMATE.start_main_~a~0_8) v_ULTIMATE.start_main_~a~0_8) (+ (* (* v_ULTIMATE.start_main_~b~0_10 v_ULTIMATE.start_main_~b~0_10) v_ULTIMATE.start_main_~b~0_10) (* (* v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~c~0_9) v_ULTIMATE.start_main_~c~0_9)))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 854#L14 [39] L14-->L14-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_11 (+ v_ULTIMATE.start_main_~b~0_12 1)) (= v_ULTIMATE.start_main_~a~0_9 1) (< v_ULTIMATE.start_main_~MAX~0_10 v_ULTIMATE.start_main_~a~0_10)) InVars {ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_10, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_12} OutVars{ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_9, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0, ULTIMATE.start_main_~b~0] 864#L14-2 [35] L14-2-->L18-1: Formula: (and (< v_ULTIMATE.start_main_~MAX~0_6 v_ULTIMATE.start_main_~b~0_7) (= v_ULTIMATE.start_main_~b~0_6 1) (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~b~0] 861#L18-1 [48] L18-1-->L14: Formula: (and (<= v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~MAX~0_9) (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~a~0_8 1)) (< (* (* v_ULTIMATE.start_main_~a~0_8 v_ULTIMATE.start_main_~a~0_8) v_ULTIMATE.start_main_~a~0_8) (+ (* (* v_ULTIMATE.start_main_~b~0_10 v_ULTIMATE.start_main_~b~0_10) v_ULTIMATE.start_main_~b~0_10) (* (* v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~c~0_9) v_ULTIMATE.start_main_~c~0_9)))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 859#L14 [2020-07-01 10:53:18,866 INFO L796 eck$LassoCheckResult]: Loop: 859#L14 [39] L14-->L14-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_11 (+ v_ULTIMATE.start_main_~b~0_12 1)) (= v_ULTIMATE.start_main_~a~0_9 1) (< v_ULTIMATE.start_main_~MAX~0_10 v_ULTIMATE.start_main_~a~0_10)) InVars {ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_10, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_12} OutVars{ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_9, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0, ULTIMATE.start_main_~b~0] 855#L14-2 [44] L14-2-->L18-1: Formula: (>= v_ULTIMATE.start_main_~MAX~0_7 v_ULTIMATE.start_main_~b~0_8) InVars {ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} AuxVars[] AssignedVars[] 856#L18-1 [48] L18-1-->L14: Formula: (and (<= v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~MAX~0_9) (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~a~0_8 1)) (< (* (* v_ULTIMATE.start_main_~a~0_8 v_ULTIMATE.start_main_~a~0_8) v_ULTIMATE.start_main_~a~0_8) (+ (* (* v_ULTIMATE.start_main_~b~0_10 v_ULTIMATE.start_main_~b~0_10) v_ULTIMATE.start_main_~b~0_10) (* (* v_ULTIMATE.start_main_~c~0_9 v_ULTIMATE.start_main_~c~0_9) v_ULTIMATE.start_main_~c~0_9)))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_9, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_~MAX~0=v_ULTIMATE.start_main_~MAX~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 859#L14 [2020-07-01 10:53:18,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:53:18,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1603689304, now seen corresponding path program 1 times [2020-07-01 10:53:18,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:53:18,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842749016] [2020-07-01 10:53:18,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:53:18,870 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 10:53:18,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319786572] [2020-07-01 10:53:18,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:53:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:18,896 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 10:53:18,897 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:18,937 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 10:53:18,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842749016] [2020-07-01 10:53:18,938 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-01 10:53:18,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319786572] [2020-07-01 10:53:18,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-01 10:53:18,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-07-01 10:53:18,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176139529] [2020-07-01 10:53:18,939 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 10:53:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:53:18,939 INFO L82 PathProgramCache]: Analyzing trace with hash 68682, now seen corresponding path program 3 times [2020-07-01 10:53:18,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:53:18,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911087859] [2020-07-01 10:53:18,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:53:18,944 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 10:53:18,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82535655] [2020-07-01 10:53:18,945 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:53:18,964 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-07-01 10:53:18,964 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-01 10:53:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:53:18,969 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:53:19,037 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:53:19,037 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:53:19,037 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:53:19,037 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:53:19,037 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:53:19,037 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:53:19,038 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:53:19,038 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:53:19,038 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 10:53:19,038 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:53:19,038 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:53:19,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:19,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:19,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:19,173 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:53:19,173 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:53:19,179 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:53:19,179 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:53:19,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:53:19,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:53:19,222 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:53:19,252 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:53:19,252 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:53:19,252 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:53:19,252 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:53:19,252 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:53:19,253 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:53:19,253 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:53:19,253 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:53:19,253 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 10:53:19,253 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:53:19,253 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:53:19,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:19,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:19,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:53:19,374 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:53:19,374 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:53:19,377 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:53:19,378 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:53:19,378 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:53:19,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:53:19,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:53:19,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:53:19,380 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:53:19,380 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:53:19,384 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:53:19,388 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 10:53:19,388 INFO L444 ModelExtractionUtils]: 2 out of 6 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 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:53:19,391 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:53:19,391 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:53:19,391 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:53:19,391 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~MAX~0, ULTIMATE.start_main_~b~0) = 1*ULTIMATE.start_main_~MAX~0 - 1*ULTIMATE.start_main_~b~0 Supporting invariants [] [2020-07-01 10:53:19,421 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:53:19,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:53:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:19,442 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:53:19,443 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:19,448 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:53:19,449 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:53:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:53:19,482 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:53:19,482 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:53:19,484 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 10:53:19,484 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 10:53:19,484 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 23 states and 40 transitions. cyclomatic complexity: 20 Second operand 4 states. [2020-07-01 10:53:19,568 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 23 states and 40 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 152 states and 260 transitions. Complement of second has 39 states. [2020-07-01 10:53:19,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 10:53:19,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 10:53:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 27 transitions. [2020-07-01 10:53:19,569 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 27 transitions. Stem has 8 letters. Loop has 3 letters. [2020-07-01 10:53:19,570 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:53:19,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 27 transitions. Stem has 11 letters. Loop has 3 letters. [2020-07-01 10:53:19,570 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:53:19,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 27 transitions. Stem has 8 letters. Loop has 6 letters. [2020-07-01 10:53:19,570 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:53:19,572 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 152 states and 260 transitions. [2020-07-01 10:53:19,575 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:53:19,575 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 152 states to 0 states and 0 transitions. [2020-07-01 10:53:19,576 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 10:53:19,576 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 10:53:19,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 10:53:19,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:53:19,576 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:53:19,576 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:53:19,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:53:19,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 10:53:19,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-01 10:53:19,577 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-07-01 10:53:19,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:53:19,577 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-01 10:53:19,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-01 10:53:19,578 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-07-01 10:53:19,578 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:53:19,579 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-07-01 10:53:19,579 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 10:53:19,579 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 10:53:19,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 10:53:19,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:53:19,579 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:53:19,579 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:53:19,579 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:53:19,579 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 10:53:19,580 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 10:53:19,580 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:53:19,580 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 10:53:19,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:53:19 BasicIcfg [2020-07-01 10:53:19,586 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:53:19,587 INFO L168 Benchmark]: Toolchain (without parser) took 86815.96 ms. Allocated memory was 649.6 MB in the beginning and 742.4 MB in the end (delta: 92.8 MB). Free memory was 561.5 MB in the beginning and 371.1 MB in the end (delta: 190.4 MB). Peak memory consumption was 283.2 MB. Max. memory is 50.3 GB. [2020-07-01 10:53:19,588 INFO L168 Benchmark]: CDTParser took 0.16 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 10:53:19,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.41 ms. Allocated memory was 649.6 MB in the beginning and 670.0 MB in the end (delta: 20.4 MB). Free memory was 561.5 MB in the beginning and 632.9 MB in the end (delta: -71.4 MB). Peak memory consumption was 29.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:53:19,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.44 ms. Allocated memory is still 670.0 MB. Free memory was 632.9 MB in the beginning and 631.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:53:19,589 INFO L168 Benchmark]: Boogie Preprocessor took 19.03 ms. Allocated memory is still 670.0 MB. Free memory was 631.8 MB in the beginning and 630.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:53:19,589 INFO L168 Benchmark]: RCFGBuilder took 227.14 ms. Allocated memory is still 670.0 MB. Free memory was 630.7 MB in the beginning and 615.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:53:19,590 INFO L168 Benchmark]: BlockEncodingV2 took 72.41 ms. Allocated memory is still 670.0 MB. Free memory was 615.9 MB in the beginning and 610.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:53:19,590 INFO L168 Benchmark]: TraceAbstraction took 144.97 ms. Allocated memory is still 670.0 MB. Free memory was 609.5 MB in the beginning and 601.9 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 50.3 GB. [2020-07-01 10:53:19,591 INFO L168 Benchmark]: BuchiAutomizer took 86026.42 ms. Allocated memory was 670.0 MB in the beginning and 742.4 MB in the end (delta: 72.4 MB). Free memory was 600.8 MB in the beginning and 371.1 MB in the end (delta: 229.7 MB). Peak memory consumption was 302.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:53:19,594 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 4 locations, 7 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 286.41 ms. Allocated memory was 649.6 MB in the beginning and 670.0 MB in the end (delta: 20.4 MB). Free memory was 561.5 MB in the beginning and 632.9 MB in the end (delta: -71.4 MB). Peak memory consumption was 29.3 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.44 ms. Allocated memory is still 670.0 MB. Free memory was 632.9 MB in the beginning and 631.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.03 ms. Allocated memory is still 670.0 MB. Free memory was 631.8 MB in the beginning and 630.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 227.14 ms. Allocated memory is still 670.0 MB. Free memory was 630.7 MB in the beginning and 615.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 72.41 ms. Allocated memory is still 670.0 MB. Free memory was 615.9 MB in the beginning and 610.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 144.97 ms. Allocated memory is still 670.0 MB. Free memory was 609.5 MB in the beginning and 601.9 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 86026.42 ms. Allocated memory was 670.0 MB in the beginning and 742.4 MB in the end (delta: 72.4 MB). Free memory was 600.8 MB in the beginning and 371.1 MB in the end (delta: 229.7 MB). Peak memory consumption was 302.1 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 0 deterministic, 5 nondeterministic). One nondeterministic module has affine ranking function -2 * c + 2 * MAX + 1 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * MAX + -2 * b + 1 and consists of 4 locations. One nondeterministic module has affine ranking function MAX + -1 * a and consists of 5 locations. One nondeterministic module has affine ranking function -1 * b + MAX and consists of 7 locations. One nondeterministic module has affine ranking function MAX + -1 * b and consists of 7 locations. 5 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 85.9s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 84.6s. Construction of modules took 0.3s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 8. Automata minimization 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 57 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 23 states and ocurred in iteration 2. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 24 SDtfs, 80 SDslu, 0 SDs, 0 SdLazy, 200 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT2 SILN0 SILU0 SILI0 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital35 mio100 ax134 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq128 hnf95 smp100 dnf100 smp100 tf104 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 10:51:49.505 ----------------------------------------------- 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_EMxBcn/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:53:22.850 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check