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/Problem18_label01_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:31:12,772 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:31:12,774 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:31:12,786 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:31:12,786 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:31:12,787 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:31:12,789 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:31:12,791 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:31:12,792 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:31:12,793 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:31:12,794 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:31:12,795 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:31:12,796 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:31:12,797 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:31:12,798 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:31:12,798 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:31:12,799 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:31:12,801 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:31:12,803 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:31:12,805 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:31:12,806 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:31:12,808 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:31:12,810 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:31:12,810 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:31:12,811 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:31:12,812 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:31:12,813 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:31:12,814 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:31:12,814 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:31:12,816 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:31:12,816 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:31:12,817 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:31:12,819 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 [2018-10-23 18:31:12,849 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:31:12,850 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:31:12,852 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:31:12,853 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:31:12,853 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:31:12,854 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:31:12,854 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:31:12,854 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:31:12,854 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:31:12,854 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:31:12,855 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:31:12,855 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:31:12,855 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:31:12,855 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:31:12,855 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:31:12,856 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:31:12,856 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:31:12,856 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:31:12,856 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:31:12,858 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:31:12,858 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:31:12,858 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:31:12,858 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:31:12,858 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:31:12,859 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:31:12,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:31:12,859 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:31:12,859 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:31:12,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:31:12,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:31:12,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:31:12,957 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:31:12,957 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:31:12,958 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label01_false-unreach-call.c [2018-10-23 18:31:13,026 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/361b881e9/6ced415dcfac432d87237f31106e5cba/FLAG2c3427f67 [2018-10-23 18:31:13,728 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:31:13,729 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label01_false-unreach-call.c [2018-10-23 18:31:13,752 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/361b881e9/6ced415dcfac432d87237f31106e5cba/FLAG2c3427f67 [2018-10-23 18:31:13,769 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/361b881e9/6ced415dcfac432d87237f31106e5cba [2018-10-23 18:31:13,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:31:13,782 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:31:13,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:31:13,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:31:13,787 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:31:13,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:31:13" (1/1) ... [2018-10-23 18:31:13,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab4c919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:31:13, skipping insertion in model container [2018-10-23 18:31:13,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:31:13" (1/1) ... [2018-10-23 18:31:13,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:31:13,932 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:31:15,020 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:31:15,025 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:31:15,514 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:31:15,541 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:31:15,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:31:15 WrapperNode [2018-10-23 18:31:15,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:31:15,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:31:15,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:31:15,544 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:31:15,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:31:15" (1/1) ... [2018-10-23 18:31:15,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:31:15" (1/1) ... [2018-10-23 18:31:16,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:31:16,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:31:16,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:31:16,070 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:31:16,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:31:15" (1/1) ... [2018-10-23 18:31:16,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:31:15" (1/1) ... [2018-10-23 18:31:16,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:31:15" (1/1) ... [2018-10-23 18:31:16,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:31:15" (1/1) ... [2018-10-23 18:31:16,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:31:15" (1/1) ... [2018-10-23 18:31:16,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:31:15" (1/1) ... [2018-10-23 18:31:16,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:31:15" (1/1) ... [2018-10-23 18:31:16,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:31:16,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:31:16,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:31:16,287 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:31:16,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:31:15" (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 [2018-10-23 18:31:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:31:16,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:31:16,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:31:23,812 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:31:23,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:31:23 BoogieIcfgContainer [2018-10-23 18:31:23,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:31:23,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:31:23,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:31:23,818 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:31:23,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:31:13" (1/3) ... [2018-10-23 18:31:23,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a52de4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:31:23, skipping insertion in model container [2018-10-23 18:31:23,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:31:15" (2/3) ... [2018-10-23 18:31:23,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a52de4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:31:23, skipping insertion in model container [2018-10-23 18:31:23,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:31:23" (3/3) ... [2018-10-23 18:31:23,822 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label01_false-unreach-call.c [2018-10-23 18:31:23,832 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:31:23,841 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:31:23,859 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:31:23,906 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:31:23,907 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:31:23,907 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:31:23,907 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:31:23,907 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:31:23,908 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:31:23,908 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:31:23,908 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:31:23,908 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:31:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-23 18:31:23,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-23 18:31:23,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:31:23,952 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:31:23,955 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:31:23,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:31:23,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1740446778, now seen corresponding path program 1 times [2018-10-23 18:31:23,962 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:31:23,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:31:24,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:31:24,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:31:24,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:31:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:31:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:31:24,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:31:24,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:31:24,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:31:24,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:31:24,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:31:24,376 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-23 18:31:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:31:35,094 INFO L93 Difference]: Finished difference Result 2902 states and 5650 transitions. [2018-10-23 18:31:35,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:31:35,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-10-23 18:31:35,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:31:35,136 INFO L225 Difference]: With dead ends: 2902 [2018-10-23 18:31:35,137 INFO L226 Difference]: Without dead ends: 2137 [2018-10-23 18:31:35,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:31:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2018-10-23 18:31:35,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2137. [2018-10-23 18:31:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2018-10-23 18:31:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3649 transitions. [2018-10-23 18:31:35,341 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3649 transitions. Word has length 27 [2018-10-23 18:31:35,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:31:35,342 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3649 transitions. [2018-10-23 18:31:35,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:31:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3649 transitions. [2018-10-23 18:31:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-23 18:31:35,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:31:35,350 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:31:35,350 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:31:35,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:31:35,351 INFO L82 PathProgramCache]: Analyzing trace with hash -245512399, now seen corresponding path program 1 times [2018-10-23 18:31:35,351 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:31:35,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:31:35,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:31:35,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:31:35,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:31:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:31:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:31:35,632 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:31:35,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:31:35,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:31:35,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:31:35,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:31:35,635 INFO L87 Difference]: Start difference. First operand 2137 states and 3649 transitions. Second operand 4 states. [2018-10-23 18:31:42,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:31:42,064 INFO L93 Difference]: Finished difference Result 6345 states and 10882 transitions. [2018-10-23 18:31:42,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:31:42,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2018-10-23 18:31:42,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:31:42,088 INFO L225 Difference]: With dead ends: 6345 [2018-10-23 18:31:42,089 INFO L226 Difference]: Without dead ends: 4210 [2018-10-23 18:31:42,094 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 [2018-10-23 18:31:42,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2018-10-23 18:31:42,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 4210. [2018-10-23 18:31:42,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4210 states. [2018-10-23 18:31:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 6149 transitions. [2018-10-23 18:31:42,183 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 6149 transitions. Word has length 94 [2018-10-23 18:31:42,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:31:42,184 INFO L481 AbstractCegarLoop]: Abstraction has 4210 states and 6149 transitions. [2018-10-23 18:31:42,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:31:42,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 6149 transitions. [2018-10-23 18:31:42,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-23 18:31:42,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:31:42,189 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:31:42,189 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:31:42,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:31:42,190 INFO L82 PathProgramCache]: Analyzing trace with hash 2084624824, now seen corresponding path program 1 times [2018-10-23 18:31:42,190 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:31:42,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:31:42,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:31:42,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:31:42,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:31:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:31:42,352 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:31:42,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:31:42,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:31:42,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:31:42,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:31:42,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:31:42,354 INFO L87 Difference]: Start difference. First operand 4210 states and 6149 transitions. Second operand 4 states. [2018-10-23 18:31:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:31:49,671 INFO L93 Difference]: Finished difference Result 16727 states and 24484 transitions. [2018-10-23 18:31:49,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:31:49,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-10-23 18:31:49,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:31:49,730 INFO L225 Difference]: With dead ends: 16727 [2018-10-23 18:31:49,730 INFO L226 Difference]: Without dead ends: 12519 [2018-10-23 18:31:49,738 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 [2018-10-23 18:31:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12519 states. [2018-10-23 18:31:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12519 to 12517. [2018-10-23 18:31:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12517 states. [2018-10-23 18:31:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12517 states to 12517 states and 16172 transitions. [2018-10-23 18:31:49,986 INFO L78 Accepts]: Start accepts. Automaton has 12517 states and 16172 transitions. Word has length 99 [2018-10-23 18:31:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:31:49,987 INFO L481 AbstractCegarLoop]: Abstraction has 12517 states and 16172 transitions. [2018-10-23 18:31:49,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:31:49,987 INFO L276 IsEmpty]: Start isEmpty. Operand 12517 states and 16172 transitions. [2018-10-23 18:31:49,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-23 18:31:49,992 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:31:49,992 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:31:49,992 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:31:49,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:31:49,993 INFO L82 PathProgramCache]: Analyzing trace with hash -2109012433, now seen corresponding path program 1 times [2018-10-23 18:31:49,993 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:31:49,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:31:49,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:31:49,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:31:49,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:31:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:31:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:31:50,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:31:50,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:31:50,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:31:50,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:31:50,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:31:50,347 INFO L87 Difference]: Start difference. First operand 12517 states and 16172 transitions. Second operand 4 states. [2018-10-23 18:31:58,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:31:58,402 INFO L93 Difference]: Finished difference Result 49908 states and 64530 transitions. [2018-10-23 18:31:58,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:31:58,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2018-10-23 18:31:58,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:31:58,490 INFO L225 Difference]: With dead ends: 49908 [2018-10-23 18:31:58,491 INFO L226 Difference]: Without dead ends: 37393 [2018-10-23 18:31:58,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:31:58,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37393 states. [2018-10-23 18:31:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37393 to 37393. [2018-10-23 18:31:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37393 states. [2018-10-23 18:31:59,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37393 states to 37393 states and 45766 transitions. [2018-10-23 18:31:59,105 INFO L78 Accepts]: Start accepts. Automaton has 37393 states and 45766 transitions. Word has length 121 [2018-10-23 18:31:59,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:31:59,105 INFO L481 AbstractCegarLoop]: Abstraction has 37393 states and 45766 transitions. [2018-10-23 18:31:59,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:31:59,106 INFO L276 IsEmpty]: Start isEmpty. Operand 37393 states and 45766 transitions. [2018-10-23 18:31:59,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-23 18:31:59,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:31:59,108 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:31:59,109 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:31:59,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:31:59,109 INFO L82 PathProgramCache]: Analyzing trace with hash -803611789, now seen corresponding path program 1 times [2018-10-23 18:31:59,109 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:31:59,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:31:59,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:31:59,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:31:59,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:31:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:31:59,664 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-10-23 18:31:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:31:59,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:31:59,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:31:59,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:31:59,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:31:59,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:31:59,930 INFO L87 Difference]: Start difference. First operand 37393 states and 45766 transitions. Second operand 5 states. [2018-10-23 18:32:00,222 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2018-10-23 18:32:08,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:32:08,905 INFO L93 Difference]: Finished difference Result 87222 states and 105468 transitions. [2018-10-23 18:32:08,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:32:08,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-10-23 18:32:08,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:32:08,985 INFO L225 Difference]: With dead ends: 87222 [2018-10-23 18:32:08,985 INFO L226 Difference]: Without dead ends: 48448 [2018-10-23 18:32:09,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:32:09,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48448 states. [2018-10-23 18:32:09,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48448 to 46375. [2018-10-23 18:32:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46375 states. [2018-10-23 18:32:09,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46375 states to 46375 states and 55349 transitions. [2018-10-23 18:32:09,580 INFO L78 Accepts]: Start accepts. Automaton has 46375 states and 55349 transitions. Word has length 146 [2018-10-23 18:32:09,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:32:09,581 INFO L481 AbstractCegarLoop]: Abstraction has 46375 states and 55349 transitions. [2018-10-23 18:32:09,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:32:09,581 INFO L276 IsEmpty]: Start isEmpty. Operand 46375 states and 55349 transitions. [2018-10-23 18:32:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-10-23 18:32:09,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:32:09,593 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:32:09,593 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:32:09,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:32:09,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1849595770, now seen corresponding path program 1 times [2018-10-23 18:32:09,594 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:32:09,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:32:09,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:32:09,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:32:09,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:32:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:32:10,323 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 18:32:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:32:10,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:32:10,503 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 [2018-10-23 18:32:10,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:32:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:32:10,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:32:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-23 18:32:10,856 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:32:10,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:32:10,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:32:10,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:32:10,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:32:10,860 INFO L87 Difference]: Start difference. First operand 46375 states and 55349 transitions. Second operand 6 states. [2018-10-23 18:32:25,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:32:25,635 INFO L93 Difference]: Finished difference Result 101743 states and 120015 transitions. [2018-10-23 18:32:25,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:32:25,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 329 [2018-10-23 18:32:25,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:32:25,721 INFO L225 Difference]: With dead ends: 101743 [2018-10-23 18:32:25,722 INFO L226 Difference]: Without dead ends: 51911 [2018-10-23 18:32:25,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 329 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:32:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51911 states. [2018-10-23 18:32:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51911 to 42211. [2018-10-23 18:32:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42211 states. [2018-10-23 18:32:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42211 states to 42211 states and 45784 transitions. [2018-10-23 18:32:26,334 INFO L78 Accepts]: Start accepts. Automaton has 42211 states and 45784 transitions. Word has length 329 [2018-10-23 18:32:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:32:26,334 INFO L481 AbstractCegarLoop]: Abstraction has 42211 states and 45784 transitions. [2018-10-23 18:32:26,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:32:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 42211 states and 45784 transitions. [2018-10-23 18:32:26,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2018-10-23 18:32:26,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:32:26,361 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:32:26,362 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:32:26,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:32:26,362 INFO L82 PathProgramCache]: Analyzing trace with hash -731024826, now seen corresponding path program 1 times [2018-10-23 18:32:26,362 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:32:26,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:32:26,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:32:26,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:32:26,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:32:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:32:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-23 18:32:27,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:32:27,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:32:27,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:32:27,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:32:27,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:32:27,118 INFO L87 Difference]: Start difference. First operand 42211 states and 45784 transitions. Second operand 4 states. [2018-10-23 18:32:32,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:32:32,780 INFO L93 Difference]: Finished difference Result 104467 states and 114925 transitions. [2018-10-23 18:32:32,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:32:32,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 631 [2018-10-23 18:32:32,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:32:32,856 INFO L225 Difference]: With dead ends: 104467 [2018-10-23 18:32:32,857 INFO L226 Difference]: Without dead ends: 62258 [2018-10-23 18:32:32,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:32:32,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62258 states. [2018-10-23 18:32:33,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62258 to 53267. [2018-10-23 18:32:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53267 states. [2018-10-23 18:32:33,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53267 states to 53267 states and 57696 transitions. [2018-10-23 18:32:33,501 INFO L78 Accepts]: Start accepts. Automaton has 53267 states and 57696 transitions. Word has length 631 [2018-10-23 18:32:33,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:32:33,502 INFO L481 AbstractCegarLoop]: Abstraction has 53267 states and 57696 transitions. [2018-10-23 18:32:33,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:32:33,503 INFO L276 IsEmpty]: Start isEmpty. Operand 53267 states and 57696 transitions. [2018-10-23 18:32:33,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2018-10-23 18:32:33,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:32:33,531 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:32:33,531 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:32:33,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:32:33,532 INFO L82 PathProgramCache]: Analyzing trace with hash -56922008, now seen corresponding path program 1 times [2018-10-23 18:32:33,532 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:32:33,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:32:33,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:32:33,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:32:33,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:32:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:32:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 529 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-10-23 18:32:34,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:32:34,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:32:34,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:32:34,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:32:34,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:32:34,029 INFO L87 Difference]: Start difference. First operand 53267 states and 57696 transitions. Second operand 4 states. [2018-10-23 18:32:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:32:39,948 INFO L93 Difference]: Finished difference Result 125189 states and 135800 transitions. [2018-10-23 18:32:39,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:32:39,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 664 [2018-10-23 18:32:39,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:32:40,029 INFO L225 Difference]: With dead ends: 125189 [2018-10-23 18:32:40,029 INFO L226 Difference]: Without dead ends: 71924 [2018-10-23 18:32:40,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:32:40,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71924 states. [2018-10-23 18:32:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71924 to 71233. [2018-10-23 18:32:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71233 states. [2018-10-23 18:32:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71233 states to 71233 states and 75926 transitions. [2018-10-23 18:32:40,792 INFO L78 Accepts]: Start accepts. Automaton has 71233 states and 75926 transitions. Word has length 664 [2018-10-23 18:32:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:32:40,793 INFO L481 AbstractCegarLoop]: Abstraction has 71233 states and 75926 transitions. [2018-10-23 18:32:40,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:32:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand 71233 states and 75926 transitions. [2018-10-23 18:32:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2018-10-23 18:32:40,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:32:40,842 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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] [2018-10-23 18:32:40,842 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:32:40,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:32:40,843 INFO L82 PathProgramCache]: Analyzing trace with hash -100247489, now seen corresponding path program 1 times [2018-10-23 18:32:40,843 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:32:40,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:32:40,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:32:40,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:32:40,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:32:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:32:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1450 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2018-10-23 18:32:42,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:32:42,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:32:42,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:32:42,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:32:42,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:32:42,162 INFO L87 Difference]: Start difference. First operand 71233 states and 75926 transitions. Second operand 4 states. [2018-10-23 18:32:47,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:32:47,363 INFO L93 Difference]: Finished difference Result 145228 states and 154723 transitions. [2018-10-23 18:32:47,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:32:47,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 837 [2018-10-23 18:32:47,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:32:47,432 INFO L225 Difference]: With dead ends: 145228 [2018-10-23 18:32:47,433 INFO L226 Difference]: Without dead ends: 65690 [2018-10-23 18:32:47,472 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 [2018-10-23 18:32:47,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65690 states. [2018-10-23 18:32:47,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65690 to 64308. [2018-10-23 18:32:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64308 states. [2018-10-23 18:32:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64308 states to 64308 states and 66452 transitions. [2018-10-23 18:32:47,981 INFO L78 Accepts]: Start accepts. Automaton has 64308 states and 66452 transitions. Word has length 837 [2018-10-23 18:32:47,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:32:47,982 INFO L481 AbstractCegarLoop]: Abstraction has 64308 states and 66452 transitions. [2018-10-23 18:32:47,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:32:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 64308 states and 66452 transitions. [2018-10-23 18:32:48,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2018-10-23 18:32:48,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:32:48,011 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:32:48,012 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:32:48,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:32:48,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1243717665, now seen corresponding path program 1 times [2018-10-23 18:32:48,012 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:32:48,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:32:48,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:32:48,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:32:48,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:32:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:32:48,933 WARN L179 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-23 18:32:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 1113 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2018-10-23 18:32:49,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:32:49,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:32:49,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:32:49,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:32:49,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:32:49,695 INFO L87 Difference]: Start difference. First operand 64308 states and 66452 transitions. Second operand 4 states. [2018-10-23 18:32:54,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:32:54,417 INFO L93 Difference]: Finished difference Result 143123 states and 148115 transitions. [2018-10-23 18:32:54,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:32:54,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 870 [2018-10-23 18:32:54,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:32:54,504 INFO L225 Difference]: With dead ends: 143123 [2018-10-23 18:32:54,504 INFO L226 Difference]: Without dead ends: 78817 [2018-10-23 18:32:54,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:32:54,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78817 states. [2018-10-23 18:32:55,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78817 to 74671. [2018-10-23 18:32:55,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74671 states. [2018-10-23 18:32:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74671 states to 74671 states and 76872 transitions. [2018-10-23 18:32:55,075 INFO L78 Accepts]: Start accepts. Automaton has 74671 states and 76872 transitions. Word has length 870 [2018-10-23 18:32:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:32:55,076 INFO L481 AbstractCegarLoop]: Abstraction has 74671 states and 76872 transitions. [2018-10-23 18:32:55,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:32:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 74671 states and 76872 transitions. [2018-10-23 18:32:55,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2018-10-23 18:32:55,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:32:55,095 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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] [2018-10-23 18:32:55,095 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:32:55,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:32:55,096 INFO L82 PathProgramCache]: Analyzing trace with hash 71348960, now seen corresponding path program 1 times [2018-10-23 18:32:55,096 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:32:55,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:32:55,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:32:55,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:32:55,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:32:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:32:55,703 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 18:32:55,928 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-10-23 18:32:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 1033 proven. 452 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-10-23 18:32:57,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:32:57,411 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 [2018-10-23 18:32:57,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:32:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:32:57,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:32:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 620 proven. 0 refuted. 0 times theorem prover too weak. 1208 trivial. 0 not checked. [2018-10-23 18:32:58,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:32:58,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 11 [2018-10-23 18:32:58,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 18:32:58,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 18:32:58,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-23 18:32:58,532 INFO L87 Difference]: Start difference. First operand 74671 states and 76872 transitions. Second operand 11 states. [2018-10-23 18:33:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:33:21,490 INFO L93 Difference]: Finished difference Result 196930 states and 203256 transitions. [2018-10-23 18:33:21,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-23 18:33:21,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 928 [2018-10-23 18:33:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:33:21,613 INFO L225 Difference]: With dead ends: 196930 [2018-10-23 18:33:21,613 INFO L226 Difference]: Without dead ends: 122952 [2018-10-23 18:33:21,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 947 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2018-10-23 18:33:21,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122952 states. [2018-10-23 18:33:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122952 to 87109. [2018-10-23 18:33:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87109 states. [2018-10-23 18:33:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87109 states to 87109 states and 89465 transitions. [2018-10-23 18:33:22,467 INFO L78 Accepts]: Start accepts. Automaton has 87109 states and 89465 transitions. Word has length 928 [2018-10-23 18:33:22,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:33:22,467 INFO L481 AbstractCegarLoop]: Abstraction has 87109 states and 89465 transitions. [2018-10-23 18:33:22,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-23 18:33:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 87109 states and 89465 transitions. [2018-10-23 18:33:22,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1491 [2018-10-23 18:33:22,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:33:22,490 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:33:22,490 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:33:22,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:33:22,491 INFO L82 PathProgramCache]: Analyzing trace with hash -904586158, now seen corresponding path program 1 times [2018-10-23 18:33:22,491 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:33:22,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:33:22,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:22,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:33:22,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:33:23,605 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-23 18:33:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2788 backedges. 1850 proven. 499 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2018-10-23 18:33:28,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:33:28,307 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 [2018-10-23 18:33:28,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:33:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:33:28,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:33:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2788 backedges. 1255 proven. 0 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2018-10-23 18:33:30,904 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:33:30,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2018-10-23 18:33:30,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 18:33:30,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 18:33:30,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-10-23 18:33:30,907 INFO L87 Difference]: Start difference. First operand 87109 states and 89465 transitions. Second operand 13 states. [2018-10-23 18:33:49,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:33:49,162 INFO L93 Difference]: Finished difference Result 179483 states and 184261 transitions. [2018-10-23 18:33:49,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-23 18:33:49,163 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1490 [2018-10-23 18:33:49,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:33:49,251 INFO L225 Difference]: With dead ends: 179483 [2018-10-23 18:33:49,251 INFO L226 Difference]: Without dead ends: 86830 [2018-10-23 18:33:49,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1514 GetRequests, 1490 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2018-10-23 18:33:49,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86830 states. [2018-10-23 18:33:50,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86830 to 82256. [2018-10-23 18:33:50,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82256 states. [2018-10-23 18:33:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82256 states to 82256 states and 84213 transitions. [2018-10-23 18:33:50,152 INFO L78 Accepts]: Start accepts. Automaton has 82256 states and 84213 transitions. Word has length 1490 [2018-10-23 18:33:50,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:33:50,153 INFO L481 AbstractCegarLoop]: Abstraction has 82256 states and 84213 transitions. [2018-10-23 18:33:50,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 18:33:50,153 INFO L276 IsEmpty]: Start isEmpty. Operand 82256 states and 84213 transitions. [2018-10-23 18:33:50,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1579 [2018-10-23 18:33:50,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:33:50,181 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:33:50,182 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:33:50,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:33:50,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1883304120, now seen corresponding path program 1 times [2018-10-23 18:33:50,183 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:33:50,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:33:50,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:50,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:33:50,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:33:51,305 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 18:33:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3629 backedges. 2156 proven. 0 refuted. 0 times theorem prover too weak. 1473 trivial. 0 not checked. [2018-10-23 18:33:53,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:33:53,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-23 18:33:53,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:33:53,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:33:53,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:33:53,225 INFO L87 Difference]: Start difference. First operand 82256 states and 84213 transitions. Second operand 7 states. [2018-10-23 18:34:01,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:01,156 INFO L93 Difference]: Finished difference Result 167396 states and 171458 transitions. [2018-10-23 18:34:01,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:34:01,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1578 [2018-10-23 18:34:01,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:01,242 INFO L225 Difference]: With dead ends: 167396 [2018-10-23 18:34:01,243 INFO L226 Difference]: Without dead ends: 84341 [2018-10-23 18:34:01,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:34:01,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84341 states. [2018-10-23 18:34:01,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84341 to 84325. [2018-10-23 18:34:01,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84325 states. [2018-10-23 18:34:01,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84325 states to 84325 states and 86184 transitions. [2018-10-23 18:34:01,939 INFO L78 Accepts]: Start accepts. Automaton has 84325 states and 86184 transitions. Word has length 1578 [2018-10-23 18:34:01,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:01,940 INFO L481 AbstractCegarLoop]: Abstraction has 84325 states and 86184 transitions. [2018-10-23 18:34:01,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:34:01,940 INFO L276 IsEmpty]: Start isEmpty. Operand 84325 states and 86184 transitions. [2018-10-23 18:34:01,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1613 [2018-10-23 18:34:01,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:01,968 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:34:01,969 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:01,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:01,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1452348509, now seen corresponding path program 1 times [2018-10-23 18:34:01,970 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:01,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:01,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:01,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:01,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:03,449 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-23 18:34:03,755 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-10-23 18:34:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 1121 proven. 1792 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-10-23 18:34:08,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:34:08,050 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 [2018-10-23 18:34:08,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:08,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:34:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 1409 proven. 0 refuted. 0 times theorem prover too weak. 1675 trivial. 0 not checked. [2018-10-23 18:34:09,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:34:09,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 18 [2018-10-23 18:34:09,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-23 18:34:09,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-23 18:34:09,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2018-10-23 18:34:09,686 INFO L87 Difference]: Start difference. First operand 84325 states and 86184 transitions. Second operand 18 states. [2018-10-23 18:34:51,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:51,315 INFO L93 Difference]: Finished difference Result 193207 states and 197524 transitions. [2018-10-23 18:34:51,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-23 18:34:51,315 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1612 [2018-10-23 18:34:51,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:51,436 INFO L225 Difference]: With dead ends: 193207 [2018-10-23 18:34:51,436 INFO L226 Difference]: Without dead ends: 104642 [2018-10-23 18:34:51,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1671 GetRequests, 1630 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=259, Invalid=1301, Unknown=0, NotChecked=0, Total=1560 [2018-10-23 18:34:51,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104642 states. [2018-10-23 18:34:52,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104642 to 93302. [2018-10-23 18:34:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93302 states. [2018-10-23 18:34:52,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93302 states to 93302 states and 95212 transitions. [2018-10-23 18:34:52,330 INFO L78 Accepts]: Start accepts. Automaton has 93302 states and 95212 transitions. Word has length 1612 [2018-10-23 18:34:52,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:52,331 INFO L481 AbstractCegarLoop]: Abstraction has 93302 states and 95212 transitions. [2018-10-23 18:34:52,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-23 18:34:52,331 INFO L276 IsEmpty]: Start isEmpty. Operand 93302 states and 95212 transitions. [2018-10-23 18:34:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2018-10-23 18:34:52,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:52,368 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:34:52,368 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:52,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:52,369 INFO L82 PathProgramCache]: Analyzing trace with hash 976284470, now seen corresponding path program 1 times [2018-10-23 18:34:52,369 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:52,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:52,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:52,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:52,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3990 backedges. 1893 proven. 1672 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2018-10-23 18:34:57,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:34:57,543 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:34:57,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:57,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:34:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3990 backedges. 1131 proven. 0 refuted. 0 times theorem prover too weak. 2859 trivial. 0 not checked. [2018-10-23 18:34:59,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:34:59,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-23 18:34:59,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 18:34:59,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 18:34:59,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-10-23 18:34:59,460 INFO L87 Difference]: Start difference. First operand 93302 states and 95212 transitions. Second operand 12 states. Received shutdown request... [2018-10-23 18:35:06,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-23 18:35:06,598 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:35:06,605 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:35:06,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:35:06 BoogieIcfgContainer [2018-10-23 18:35:06,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:35:06,606 INFO L168 Benchmark]: Toolchain (without parser) took 232825.56 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -144.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-23 18:35:06,607 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:35:06,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1759.67 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:35:06,609 INFO L168 Benchmark]: Boogie Procedure Inliner took 526.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -923.3 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:35:06,609 INFO L168 Benchmark]: Boogie Preprocessor took 216.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:35:06,610 INFO L168 Benchmark]: RCFGBuilder took 7526.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 529.8 MB). Peak memory consumption was 529.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:35:06,611 INFO L168 Benchmark]: TraceAbstraction took 222791.05 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 71.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-23 18:35:06,618 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1759.67 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 526.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -923.3 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 216.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7526.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 529.8 MB). Peak memory consumption was 529.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222791.05 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 71.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 87). Cancelled while BasicCegarLoop was constructing difference of abstraction (93302states) and FLOYD_HOARE automaton (currently 16 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (3845 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 222.7s OverallTime, 15 OverallIterations, 9 TraceHistogramMax, 177.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8134 SDtfs, 58435 SDslu, 3486 SDs, 0 SdLazy, 152974 SolverSat, 10818 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 139.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6253 GetRequests, 6095 SyntacticMatches, 14 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93302occurred in iteration=14, 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: 7.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 78758 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 17135 NumberOfCodeBlocks, 17135 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 17115 ConstructedInterpolants, 0 QuantifiedInterpolants, 86122012 SizeOfPredicates, 1 NumberOfNonLiveVariables, 7016 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 20 InterpolantComputations, 15 PerfectInterpolantSequences, 27366/31785 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown