java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:22:02,680 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:22:02,682 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:22:02,694 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:22:02,695 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:22:02,696 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:22:02,697 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:22:02,699 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:22:02,701 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:22:02,702 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:22:02,703 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:22:02,703 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:22:02,704 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:22:02,706 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:22:02,707 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:22:02,707 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:22:02,708 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:22:02,710 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:22:02,712 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:22:02,714 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:22:02,721 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:22:02,722 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:22:02,728 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 19:22:02,745 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:22:02,761 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:22:02,761 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:22:02,762 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:22:02,762 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:22:02,763 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:22:02,763 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:22:02,763 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:22:02,763 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:22:02,764 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:22:02,764 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:22:02,764 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:22:02,764 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:22:02,765 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:22:02,765 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:22:02,765 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:22:02,765 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:22:02,765 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:22:02,766 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:22:02,766 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:22:02,766 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:22:02,766 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:22:02,766 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:22:02,767 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:22:02,767 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:22:02,767 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:22:02,767 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:22:02,769 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:22:02,769 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:22:02,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:22:02,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:22:02,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:22:02,848 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:22:02,849 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:22:02,849 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14_false-unreach-call.c [2018-10-26 19:22:02,903 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e4c6f9f25/d88665304d434553981c8e680f3d6bde/FLAG4ec7f0d81 [2018-10-26 19:22:03,654 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:22:03,655 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label14_false-unreach-call.c [2018-10-26 19:22:03,679 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e4c6f9f25/d88665304d434553981c8e680f3d6bde/FLAG4ec7f0d81 [2018-10-26 19:22:03,702 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e4c6f9f25/d88665304d434553981c8e680f3d6bde [2018-10-26 19:22:03,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:22:03,721 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:22:03,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:22:03,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:22:03,730 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:22:03,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:22:03" (1/1) ... [2018-10-26 19:22:03,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b704e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:22:03, skipping insertion in model container [2018-10-26 19:22:03,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:22:03" (1/1) ... [2018-10-26 19:22:03,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:22:03,863 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:22:04,683 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:22:04,687 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:22:04,984 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:22:05,006 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:22:05,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:22:05 WrapperNode [2018-10-26 19:22:05,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:22:05,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:22:05,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:22:05,009 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:22:05,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:22:05" (1/1) ... [2018-10-26 19:22:05,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:22:05" (1/1) ... [2018-10-26 19:22:05,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:22:05,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:22:05,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:22:05,431 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:22:05,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:22:05" (1/1) ... [2018-10-26 19:22:05,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:22:05" (1/1) ... [2018-10-26 19:22:05,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:22:05" (1/1) ... [2018-10-26 19:22:05,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:22:05" (1/1) ... [2018-10-26 19:22:05,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:22:05" (1/1) ... [2018-10-26 19:22:05,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:22:05" (1/1) ... [2018-10-26 19:22:05,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:22:05" (1/1) ... [2018-10-26 19:22:05,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:22:05,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:22:05,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:22:05,701 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:22:05,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:22:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:22:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:22:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:22:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:22:16,876 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:22:16,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:22:16 BoogieIcfgContainer [2018-10-26 19:22:16,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:22:16,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:22:16,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:22:16,883 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:22:16,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:22:03" (1/3) ... [2018-10-26 19:22:16,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216a2e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:22:16, skipping insertion in model container [2018-10-26 19:22:16,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:22:05" (2/3) ... [2018-10-26 19:22:16,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216a2e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:22:16, skipping insertion in model container [2018-10-26 19:22:16,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:22:16" (3/3) ... [2018-10-26 19:22:16,887 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label14_false-unreach-call.c [2018-10-26 19:22:16,900 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:22:16,910 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:22:16,929 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:22:16,971 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:22:16,972 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:22:16,972 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:22:16,972 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:22:16,972 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:22:16,972 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:22:16,973 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:22:16,973 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:22:16,973 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:22:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-26 19:22:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 19:22:17,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:22:17,012 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:22:17,015 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:22:17,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:22:17,022 INFO L82 PathProgramCache]: Analyzing trace with hash 666618706, now seen corresponding path program 1 times [2018-10-26 19:22:17,024 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:22:17,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:22:17,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:22:17,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:22:17,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:22:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:22:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:22:17,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:22:17,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:22:17,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:22:17,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:22:17,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:22:17,498 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 5 states. [2018-10-26 19:22:26,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:22:26,696 INFO L93 Difference]: Finished difference Result 1470 states and 2718 transitions. [2018-10-26 19:22:26,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:22:26,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-10-26 19:22:26,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:22:26,734 INFO L225 Difference]: With dead ends: 1470 [2018-10-26 19:22:26,734 INFO L226 Difference]: Without dead ends: 1038 [2018-10-26 19:22:26,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:22:26,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2018-10-26 19:22:26,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1036. [2018-10-26 19:22:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2018-10-26 19:22:26,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1670 transitions. [2018-10-26 19:22:26,860 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1670 transitions. Word has length 16 [2018-10-26 19:22:26,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:22:26,861 INFO L481 AbstractCegarLoop]: Abstraction has 1036 states and 1670 transitions. [2018-10-26 19:22:26,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:22:26,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1670 transitions. [2018-10-26 19:22:26,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-26 19:22:26,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:22:26,869 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:22:26,869 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:22:26,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:22:26,870 INFO L82 PathProgramCache]: Analyzing trace with hash 287976141, now seen corresponding path program 1 times [2018-10-26 19:22:26,870 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:22:26,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:22:26,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:22:26,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:22:26,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:22:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:22:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:22:27,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:22:27,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:22:27,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:22:27,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:22:27,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:22:27,255 INFO L87 Difference]: Start difference. First operand 1036 states and 1670 transitions. Second operand 4 states. [2018-10-26 19:22:32,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:22:32,644 INFO L93 Difference]: Finished difference Result 3937 states and 6425 transitions. [2018-10-26 19:22:32,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:22:32,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-10-26 19:22:32,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:22:32,662 INFO L225 Difference]: With dead ends: 3937 [2018-10-26 19:22:32,663 INFO L226 Difference]: Without dead ends: 2903 [2018-10-26 19:22:32,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:22:32,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2018-10-26 19:22:32,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1937. [2018-10-26 19:22:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2018-10-26 19:22:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2808 transitions. [2018-10-26 19:22:32,726 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2808 transitions. Word has length 129 [2018-10-26 19:22:32,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:22:32,727 INFO L481 AbstractCegarLoop]: Abstraction has 1937 states and 2808 transitions. [2018-10-26 19:22:32,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:22:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2808 transitions. [2018-10-26 19:22:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-26 19:22:32,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:22:32,737 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:22:32,737 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:22:32,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:22:32,738 INFO L82 PathProgramCache]: Analyzing trace with hash 610027837, now seen corresponding path program 1 times [2018-10-26 19:22:32,738 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:22:32,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:22:32,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:22:32,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:22:32,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:22:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:22:33,599 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-26 19:22:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 19:22:34,296 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:22:34,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:22:34,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:22:34,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:22:34,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:22:34,298 INFO L87 Difference]: Start difference. First operand 1937 states and 2808 transitions. Second operand 5 states. [2018-10-26 19:22:44,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:22:44,754 INFO L93 Difference]: Finished difference Result 4777 states and 6638 transitions. [2018-10-26 19:22:44,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:22:44,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2018-10-26 19:22:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:22:44,772 INFO L225 Difference]: With dead ends: 4777 [2018-10-26 19:22:44,772 INFO L226 Difference]: Without dead ends: 2842 [2018-10-26 19:22:44,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:22:44,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-26 19:22:44,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2841. [2018-10-26 19:22:44,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2841 states. [2018-10-26 19:22:44,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 3775 transitions. [2018-10-26 19:22:44,839 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 3775 transitions. Word has length 290 [2018-10-26 19:22:44,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:22:44,840 INFO L481 AbstractCegarLoop]: Abstraction has 2841 states and 3775 transitions. [2018-10-26 19:22:44,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:22:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 3775 transitions. [2018-10-26 19:22:44,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-26 19:22:44,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:22:44,846 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:22:44,847 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:22:44,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:22:44,847 INFO L82 PathProgramCache]: Analyzing trace with hash -859833653, now seen corresponding path program 1 times [2018-10-26 19:22:44,847 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:22:44,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:22:44,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:22:44,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:22:44,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:22:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:22:45,461 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 19:22:46,047 WARN L179 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-10-26 19:22:46,603 WARN L179 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2018-10-26 19:22:47,319 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-26 19:22:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 31 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:22:47,832 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:22:47,832 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:22:47,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:22:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:22:48,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:22:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:22:48,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:22:48,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2018-10-26 19:22:48,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 19:22:48,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 19:22:48,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-10-26 19:22:48,320 INFO L87 Difference]: Start difference. First operand 2841 states and 3775 transitions. Second operand 12 states. [2018-10-26 19:23:09,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:23:09,684 INFO L93 Difference]: Finished difference Result 9555 states and 12449 transitions. [2018-10-26 19:23:09,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-26 19:23:09,684 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 364 [2018-10-26 19:23:09,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:23:09,716 INFO L225 Difference]: With dead ends: 9555 [2018-10-26 19:23:09,717 INFO L226 Difference]: Without dead ends: 6716 [2018-10-26 19:23:09,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 368 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2018-10-26 19:23:09,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2018-10-26 19:23:09,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 5199. [2018-10-26 19:23:09,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5199 states. [2018-10-26 19:23:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 6574 transitions. [2018-10-26 19:23:09,840 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 6574 transitions. Word has length 364 [2018-10-26 19:23:09,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:23:09,841 INFO L481 AbstractCegarLoop]: Abstraction has 5199 states and 6574 transitions. [2018-10-26 19:23:09,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 19:23:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 6574 transitions. [2018-10-26 19:23:09,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-26 19:23:09,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:23:09,850 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:23:09,850 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:23:09,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:23:09,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1888187913, now seen corresponding path program 1 times [2018-10-26 19:23:09,851 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:23:09,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:23:09,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:23:09,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:23:09,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:23:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:23:10,612 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-26 19:23:10,945 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-26 19:23:11,410 WARN L179 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 14 [2018-10-26 19:23:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 267 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 19:23:11,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:23:11,919 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:23:11,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:23:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:23:12,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:23:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-26 19:23:12,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:23:12,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-26 19:23:12,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:23:12,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:23:12,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:23:12,182 INFO L87 Difference]: Start difference. First operand 5199 states and 6574 transitions. Second operand 8 states. [2018-10-26 19:23:22,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:23:22,086 INFO L93 Difference]: Finished difference Result 14466 states and 17816 transitions. [2018-10-26 19:23:22,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 19:23:22,090 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 382 [2018-10-26 19:23:22,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:23:22,116 INFO L225 Difference]: With dead ends: 14466 [2018-10-26 19:23:22,116 INFO L226 Difference]: Without dead ends: 6095 [2018-10-26 19:23:22,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 385 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-10-26 19:23:22,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6095 states. [2018-10-26 19:23:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6095 to 5755. [2018-10-26 19:23:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5755 states. [2018-10-26 19:23:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 6941 transitions. [2018-10-26 19:23:22,235 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 6941 transitions. Word has length 382 [2018-10-26 19:23:22,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:23:22,235 INFO L481 AbstractCegarLoop]: Abstraction has 5755 states and 6941 transitions. [2018-10-26 19:23:22,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 19:23:22,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 6941 transitions. [2018-10-26 19:23:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2018-10-26 19:23:22,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:23:22,246 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:23:22,247 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:23:22,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:23:22,247 INFO L82 PathProgramCache]: Analyzing trace with hash 835520680, now seen corresponding path program 1 times [2018-10-26 19:23:22,247 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:23:22,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:23:22,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:23:22,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:23:22,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:23:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:23:22,609 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-26 19:23:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-10-26 19:23:22,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:23:22,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:23:22,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:23:22,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:23:22,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:23:22,753 INFO L87 Difference]: Start difference. First operand 5755 states and 6941 transitions. Second operand 3 states. [2018-10-26 19:23:26,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:23:26,172 INFO L93 Difference]: Finished difference Result 15580 states and 19013 transitions. [2018-10-26 19:23:26,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:23:26,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 493 [2018-10-26 19:23:26,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:23:26,215 INFO L225 Difference]: With dead ends: 15580 [2018-10-26 19:23:26,215 INFO L226 Difference]: Without dead ends: 9827 [2018-10-26 19:23:26,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:23:26,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9827 states. [2018-10-26 19:23:26,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9827 to 9827. [2018-10-26 19:23:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9827 states. [2018-10-26 19:23:26,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9827 states to 9827 states and 11787 transitions. [2018-10-26 19:23:26,424 INFO L78 Accepts]: Start accepts. Automaton has 9827 states and 11787 transitions. Word has length 493 [2018-10-26 19:23:26,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:23:26,426 INFO L481 AbstractCegarLoop]: Abstraction has 9827 states and 11787 transitions. [2018-10-26 19:23:26,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:23:26,426 INFO L276 IsEmpty]: Start isEmpty. Operand 9827 states and 11787 transitions. [2018-10-26 19:23:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-10-26 19:23:26,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:23:26,450 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:23:26,451 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:23:26,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:23:26,451 INFO L82 PathProgramCache]: Analyzing trace with hash -2132258317, now seen corresponding path program 1 times [2018-10-26 19:23:26,451 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:23:26,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:23:26,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:23:26,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:23:26,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:23:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:23:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-10-26 19:23:27,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:23:27,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:23:27,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:23:27,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:23:27,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:23:27,320 INFO L87 Difference]: Start difference. First operand 9827 states and 11787 transitions. Second operand 4 states. [2018-10-26 19:23:31,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:23:31,335 INFO L93 Difference]: Finished difference Result 19654 states and 23578 transitions. [2018-10-26 19:23:31,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:23:31,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 548 [2018-10-26 19:23:31,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:23:31,356 INFO L225 Difference]: With dead ends: 19654 [2018-10-26 19:23:31,356 INFO L226 Difference]: Without dead ends: 9829 [2018-10-26 19:23:31,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:23:31,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9829 states. [2018-10-26 19:23:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9829 to 9824. [2018-10-26 19:23:31,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9824 states. [2018-10-26 19:23:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9824 states to 9824 states and 11317 transitions. [2018-10-26 19:23:31,509 INFO L78 Accepts]: Start accepts. Automaton has 9824 states and 11317 transitions. Word has length 548 [2018-10-26 19:23:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:23:31,510 INFO L481 AbstractCegarLoop]: Abstraction has 9824 states and 11317 transitions. [2018-10-26 19:23:31,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:23:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 9824 states and 11317 transitions. [2018-10-26 19:23:31,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-10-26 19:23:31,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:23:31,525 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:23:31,525 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:23:31,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:23:31,526 INFO L82 PathProgramCache]: Analyzing trace with hash 753076855, now seen corresponding path program 1 times [2018-10-26 19:23:31,526 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:23:31,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:23:31,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:23:31,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:23:31,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:23:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:23:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-10-26 19:23:32,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:23:32,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:23:32,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:23:32,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:23:32,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:23:32,544 INFO L87 Difference]: Start difference. First operand 9824 states and 11317 transitions. Second operand 5 states. [2018-10-26 19:23:37,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:23:37,550 INFO L93 Difference]: Finished difference Result 30431 states and 35376 transitions. [2018-10-26 19:23:37,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:23:37,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 554 [2018-10-26 19:23:37,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:23:37,586 INFO L225 Difference]: With dead ends: 30431 [2018-10-26 19:23:37,586 INFO L226 Difference]: Without dead ends: 20609 [2018-10-26 19:23:37,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:23:37,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20609 states. [2018-10-26 19:23:37,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20609 to 16947. [2018-10-26 19:23:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16947 states. [2018-10-26 19:23:37,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16947 states to 16947 states and 19062 transitions. [2018-10-26 19:23:37,869 INFO L78 Accepts]: Start accepts. Automaton has 16947 states and 19062 transitions. Word has length 554 [2018-10-26 19:23:37,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:23:37,870 INFO L481 AbstractCegarLoop]: Abstraction has 16947 states and 19062 transitions. [2018-10-26 19:23:37,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:23:37,870 INFO L276 IsEmpty]: Start isEmpty. Operand 16947 states and 19062 transitions. [2018-10-26 19:23:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2018-10-26 19:23:37,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:23:37,900 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:23:37,902 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:23:37,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:23:37,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1461292683, now seen corresponding path program 1 times [2018-10-26 19:23:37,903 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:23:37,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:23:37,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:23:37,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:23:37,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:23:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:23:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 369 proven. 105 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-10-26 19:23:38,832 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:23:38,832 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:23:38,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:23:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:23:39,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:23:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 369 proven. 105 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-10-26 19:23:39,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:23:39,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9 [2018-10-26 19:23:39,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 19:23:39,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 19:23:39,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:23:39,963 INFO L87 Difference]: Start difference. First operand 16947 states and 19062 transitions. Second operand 9 states. [2018-10-26 19:23:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:23:55,814 INFO L93 Difference]: Finished difference Result 56725 states and 64252 transitions. [2018-10-26 19:23:55,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-26 19:23:55,815 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 649 [2018-10-26 19:23:55,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:23:55,879 INFO L225 Difference]: With dead ends: 56725 [2018-10-26 19:23:55,879 INFO L226 Difference]: Without dead ends: 40080 [2018-10-26 19:23:55,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 655 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2018-10-26 19:23:55,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40080 states. [2018-10-26 19:23:56,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40080 to 35340. [2018-10-26 19:23:56,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35340 states. [2018-10-26 19:23:56,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35340 states to 35340 states and 38245 transitions. [2018-10-26 19:23:56,409 INFO L78 Accepts]: Start accepts. Automaton has 35340 states and 38245 transitions. Word has length 649 [2018-10-26 19:23:56,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:23:56,410 INFO L481 AbstractCegarLoop]: Abstraction has 35340 states and 38245 transitions. [2018-10-26 19:23:56,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 19:23:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 35340 states and 38245 transitions. [2018-10-26 19:23:56,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2018-10-26 19:23:56,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:23:56,441 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:23:56,442 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:23:56,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:23:56,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1789978358, now seen corresponding path program 1 times [2018-10-26 19:23:56,442 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:23:56,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:23:56,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:23:56,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:23:56,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:23:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:23:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2018-10-26 19:23:56,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:23:56,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:23:56,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:23:56,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:23:56,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:23:56,939 INFO L87 Difference]: Start difference. First operand 35340 states and 38245 transitions. Second operand 3 states. [2018-10-26 19:23:59,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:23:59,737 INFO L93 Difference]: Finished difference Result 70376 states and 76184 transitions. [2018-10-26 19:23:59,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:23:59,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 712 [2018-10-26 19:23:59,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:23:59,774 INFO L225 Difference]: With dead ends: 70376 [2018-10-26 19:23:59,774 INFO L226 Difference]: Without dead ends: 35338 [2018-10-26 19:23:59,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:23:59,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35338 states. [2018-10-26 19:24:00,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35338 to 35338. [2018-10-26 19:24:00,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35338 states. [2018-10-26 19:24:00,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35338 states to 35338 states and 38241 transitions. [2018-10-26 19:24:00,295 INFO L78 Accepts]: Start accepts. Automaton has 35338 states and 38241 transitions. Word has length 712 [2018-10-26 19:24:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:24:00,295 INFO L481 AbstractCegarLoop]: Abstraction has 35338 states and 38241 transitions. [2018-10-26 19:24:00,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:24:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 35338 states and 38241 transitions. [2018-10-26 19:24:00,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2018-10-26 19:24:00,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:24:00,590 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:24:00,590 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:24:00,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:24:00,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1654596742, now seen corresponding path program 1 times [2018-10-26 19:24:00,591 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:24:00,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:24:00,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:24:00,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:24:00,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:24:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:24:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-10-26 19:24:01,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:24:01,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:24:01,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:24:01,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:24:01,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:24:01,781 INFO L87 Difference]: Start difference. First operand 35338 states and 38241 transitions. Second operand 6 states. [2018-10-26 19:24:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:24:09,715 INFO L93 Difference]: Finished difference Result 79480 states and 85720 transitions. [2018-10-26 19:24:09,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:24:09,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 752 [2018-10-26 19:24:09,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:24:09,748 INFO L225 Difference]: With dead ends: 79480 [2018-10-26 19:24:09,749 INFO L226 Difference]: Without dead ends: 44444 [2018-10-26 19:24:09,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:24:09,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44444 states. [2018-10-26 19:24:10,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44444 to 35338. [2018-10-26 19:24:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35338 states. [2018-10-26 19:24:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35338 states to 35338 states and 38223 transitions. [2018-10-26 19:24:10,150 INFO L78 Accepts]: Start accepts. Automaton has 35338 states and 38223 transitions. Word has length 752 [2018-10-26 19:24:10,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:24:10,150 INFO L481 AbstractCegarLoop]: Abstraction has 35338 states and 38223 transitions. [2018-10-26 19:24:10,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:24:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 35338 states and 38223 transitions. [2018-10-26 19:24:10,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2018-10-26 19:24:10,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:24:10,172 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:24:10,172 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:24:10,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:24:10,173 INFO L82 PathProgramCache]: Analyzing trace with hash -227398086, now seen corresponding path program 1 times [2018-10-26 19:24:10,173 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:24:10,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:24:10,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:24:10,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:24:10,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:24:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:24:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 604 proven. 107 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2018-10-26 19:24:11,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:24:11,708 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:24:11,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:24:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:24:11,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:24:12,314 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2018-10-26 19:24:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 604 proven. 107 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2018-10-26 19:24:13,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:24:13,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3] total 11 [2018-10-26 19:24:13,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 19:24:13,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 19:24:13,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-10-26 19:24:13,793 INFO L87 Difference]: Start difference. First operand 35338 states and 38223 transitions. Second operand 12 states. Received shutdown request... [2018-10-26 19:26:10,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:26:10,593 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:26:10,599 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:26:10,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:26:10 BoogieIcfgContainer [2018-10-26 19:26:10,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:26:10,600 INFO L168 Benchmark]: Toolchain (without parser) took 246881.41 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -344.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-26 19:26:10,601 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:26:10,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1283.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:26:10,603 INFO L168 Benchmark]: Boogie Procedure Inliner took 420.88 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 737.7 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -851.2 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-26 19:26:10,604 INFO L168 Benchmark]: Boogie Preprocessor took 270.22 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:26:10,604 INFO L168 Benchmark]: RCFGBuilder took 11176.52 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 308.8 MB). Peak memory consumption was 308.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:26:10,605 INFO L168 Benchmark]: TraceAbstraction took 233720.59 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 64.2 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-26 19:26:10,610 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1283.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 420.88 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 737.7 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -851.2 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 270.22 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11176.52 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 308.8 MB). Peak memory consumption was 308.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233720.59 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 64.2 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 52). Cancelled while BasicCegarLoop was constructing difference of abstraction (35338states) and FLOYD_HOARE automaton (currently 7 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (37793 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 233.6s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 212.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3249 SDtfs, 20107 SDslu, 3026 SDs, 0 SdLazy, 44915 SolverSat, 7415 SolverUnsat, 54 SolverUnknown, 0 SolverNotchecked, 198.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2269 GetRequests, 2181 SyntacticMatches, 15 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35340occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 20339 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 7800 NumberOfCodeBlocks, 7800 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 7784 ConstructedInterpolants, 108 QuantifiedInterpolants, 20799373 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2584 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 16 InterpolantComputations, 10 PerfectInterpolantSequences, 6487/6987 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown