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/Problem13_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:19:56,757 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:19:56,759 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:19:56,779 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:19:56,779 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:19:56,782 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:19:56,785 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:19:56,787 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:19:56,793 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:19:56,794 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:19:56,795 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:19:56,796 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:19:56,797 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:19:56,798 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:19:56,799 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:19:56,803 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:19:56,804 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:19:56,806 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:19:56,808 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:19:56,809 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:19:56,810 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:19:56,812 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:19:56,814 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:19:56,823 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 [2018-10-24 16:19:56,838 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:19:56,839 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:19:56,840 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:19:56,840 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:19:56,840 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:19:56,841 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:19:56,841 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:19:56,841 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:19:56,841 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:19:56,841 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:19:56,842 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:19:56,842 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:19:56,842 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:19:56,842 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:19:56,842 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:19:56,843 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:19:56,843 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:19:56,843 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:19:56,843 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:19:56,843 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:19:56,843 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:19:56,844 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:19:56,844 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:19:56,844 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:19:56,844 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:19:56,844 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:19:56,845 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:19:56,845 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:19:56,902 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:19:56,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:19:56,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:19:56,925 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:19:56,925 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:19:56,926 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label15_true-unreach-call.c [2018-10-24 16:19:56,994 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/800e1f815/80c851e89a3341b8864dfc8ff3e50e7e/FLAGd88cbbb1b [2018-10-24 16:19:57,763 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:19:57,764 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label15_true-unreach-call.c [2018-10-24 16:19:57,806 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/800e1f815/80c851e89a3341b8864dfc8ff3e50e7e/FLAGd88cbbb1b [2018-10-24 16:19:57,829 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/800e1f815/80c851e89a3341b8864dfc8ff3e50e7e [2018-10-24 16:19:57,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:19:57,846 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:19:57,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:19:57,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:19:57,853 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:19:57,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:57" (1/1) ... [2018-10-24 16:19:57,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed9bffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:57, skipping insertion in model container [2018-10-24 16:19:57,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:57" (1/1) ... [2018-10-24 16:19:57,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:19:58,063 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:19:59,603 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:19:59,610 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:20:00,453 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:20:00,486 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:20:00,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:00 WrapperNode [2018-10-24 16:20:00,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:20:00,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:20:00,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:20:00,488 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:20:00,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:00" (1/1) ... [2018-10-24 16:20:00,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:00" (1/1) ... [2018-10-24 16:20:01,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:20:01,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:20:01,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:20:01,276 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:20:01,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:00" (1/1) ... [2018-10-24 16:20:01,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:00" (1/1) ... [2018-10-24 16:20:01,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:00" (1/1) ... [2018-10-24 16:20:01,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:00" (1/1) ... [2018-10-24 16:20:01,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:00" (1/1) ... [2018-10-24 16:20:01,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:00" (1/1) ... [2018-10-24 16:20:01,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:00" (1/1) ... [2018-10-24 16:20:01,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:20:01,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:20:01,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:20:01,752 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:20:01,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:00" (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 [2018-10-24 16:20:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:20:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:20:01,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:20:16,551 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:20:16,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:20:16 BoogieIcfgContainer [2018-10-24 16:20:16,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:20:16,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:20:16,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:20:16,557 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:20:16,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:19:57" (1/3) ... [2018-10-24 16:20:16,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6e476a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:20:16, skipping insertion in model container [2018-10-24 16:20:16,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:00" (2/3) ... [2018-10-24 16:20:16,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6e476a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:20:16, skipping insertion in model container [2018-10-24 16:20:16,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:20:16" (3/3) ... [2018-10-24 16:20:16,561 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label15_true-unreach-call.c [2018-10-24 16:20:16,571 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:20:16,581 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:20:16,598 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:20:16,645 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:20:16,645 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:20:16,645 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:20:16,646 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:20:16,646 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:20:16,646 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:20:16,646 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:20:16,646 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:20:16,646 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:20:16,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:20:16,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 16:20:16,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:16,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:16,700 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:16,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:16,706 INFO L82 PathProgramCache]: Analyzing trace with hash 680225122, now seen corresponding path program 1 times [2018-10-24 16:20:16,709 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:16,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:16,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:16,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:16,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:17,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:17,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:20:17,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:17,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:17,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:17,201 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 16:20:35,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:35,662 INFO L93 Difference]: Finished difference Result 3993 states and 7498 transitions. [2018-10-24 16:20:35,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:35,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-10-24 16:20:35,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:35,716 INFO L225 Difference]: With dead ends: 3993 [2018-10-24 16:20:35,716 INFO L226 Difference]: Without dead ends: 2887 [2018-10-24 16:20:35,725 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 [2018-10-24 16:20:35,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2018-10-24 16:20:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1936. [2018-10-24 16:20:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1936 states. [2018-10-24 16:20:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 3550 transitions. [2018-10-24 16:20:35,874 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 3550 transitions. Word has length 37 [2018-10-24 16:20:35,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:35,874 INFO L481 AbstractCegarLoop]: Abstraction has 1936 states and 3550 transitions. [2018-10-24 16:20:35,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:35,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 3550 transitions. [2018-10-24 16:20:35,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 16:20:35,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:35,879 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, 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] [2018-10-24 16:20:35,880 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:35,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:35,880 INFO L82 PathProgramCache]: Analyzing trace with hash -2124441306, now seen corresponding path program 1 times [2018-10-24 16:20:35,880 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:35,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:35,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:35,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:35,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:36,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:36,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:20:36,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:36,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:36,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:36,104 INFO L87 Difference]: Start difference. First operand 1936 states and 3550 transitions. Second operand 4 states. [2018-10-24 16:20:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:49,481 INFO L93 Difference]: Finished difference Result 7120 states and 13344 transitions. [2018-10-24 16:20:49,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:49,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-24 16:20:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:49,511 INFO L225 Difference]: With dead ends: 7120 [2018-10-24 16:20:49,512 INFO L226 Difference]: Without dead ends: 5186 [2018-10-24 16:20:49,517 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 [2018-10-24 16:20:49,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2018-10-24 16:20:49,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 3554. [2018-10-24 16:20:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3554 states. [2018-10-24 16:20:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 6248 transitions. [2018-10-24 16:20:49,601 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 6248 transitions. Word has length 106 [2018-10-24 16:20:49,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:49,601 INFO L481 AbstractCegarLoop]: Abstraction has 3554 states and 6248 transitions. [2018-10-24 16:20:49,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 6248 transitions. [2018-10-24 16:20:49,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 16:20:49,605 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:49,605 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, 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] [2018-10-24 16:20:49,605 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:49,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:49,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1046179583, now seen corresponding path program 1 times [2018-10-24 16:20:49,606 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:49,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:49,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:49,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:49,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:49,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:49,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:20:49,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:49,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:49,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:49,906 INFO L87 Difference]: Start difference. First operand 3554 states and 6248 transitions. Second operand 4 states. [2018-10-24 16:21:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:05,018 INFO L93 Difference]: Finished difference Result 12675 states and 22439 transitions. [2018-10-24 16:21:05,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:05,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2018-10-24 16:21:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:05,070 INFO L225 Difference]: With dead ends: 12675 [2018-10-24 16:21:05,071 INFO L226 Difference]: Without dead ends: 9123 [2018-10-24 16:21:05,078 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 [2018-10-24 16:21:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9123 states. [2018-10-24 16:21:05,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9123 to 9116. [2018-10-24 16:21:05,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9116 states. [2018-10-24 16:21:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9116 states to 9116 states and 14200 transitions. [2018-10-24 16:21:05,272 INFO L78 Accepts]: Start accepts. Automaton has 9116 states and 14200 transitions. Word has length 119 [2018-10-24 16:21:05,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:05,273 INFO L481 AbstractCegarLoop]: Abstraction has 9116 states and 14200 transitions. [2018-10-24 16:21:05,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 9116 states and 14200 transitions. [2018-10-24 16:21:05,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 16:21:05,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:05,284 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, 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] [2018-10-24 16:21:05,284 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:05,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:05,285 INFO L82 PathProgramCache]: Analyzing trace with hash -171132688, now seen corresponding path program 1 times [2018-10-24 16:21:05,285 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:05,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:05,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:05,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:05,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:05,798 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:21:06,203 WARN L179 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:21:06,398 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:21:06,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:06,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:06,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:21:06,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:21:06,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:21:06,401 INFO L87 Difference]: Start difference. First operand 9116 states and 14200 transitions. Second operand 5 states. [2018-10-24 16:21:20,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:20,592 INFO L93 Difference]: Finished difference Result 29265 states and 45080 transitions. [2018-10-24 16:21:20,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:21:20,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-10-24 16:21:20,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:20,655 INFO L225 Difference]: With dead ends: 29265 [2018-10-24 16:21:20,655 INFO L226 Difference]: Without dead ends: 20151 [2018-10-24 16:21:20,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:21:20,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2018-10-24 16:21:21,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 20149. [2018-10-24 16:21:21,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20149 states. [2018-10-24 16:21:21,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20149 states to 20149 states and 28284 transitions. [2018-10-24 16:21:21,216 INFO L78 Accepts]: Start accepts. Automaton has 20149 states and 28284 transitions. Word has length 140 [2018-10-24 16:21:21,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:21,217 INFO L481 AbstractCegarLoop]: Abstraction has 20149 states and 28284 transitions. [2018-10-24 16:21:21,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:21:21,217 INFO L276 IsEmpty]: Start isEmpty. Operand 20149 states and 28284 transitions. [2018-10-24 16:21:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-24 16:21:21,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:21,223 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, 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] [2018-10-24 16:21:21,223 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:21,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:21,223 INFO L82 PathProgramCache]: Analyzing trace with hash -621884010, now seen corresponding path program 1 times [2018-10-24 16:21:21,223 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:21,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:21,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:21,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:21,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-24 16:21:21,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:21:21,567 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 [2018-10-24 16:21:21,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:21,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:21:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-10-24 16:21:21,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:21:21,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 16:21:21,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:21:21,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:21:21,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:21:21,876 INFO L87 Difference]: Start difference. First operand 20149 states and 28284 transitions. Second operand 5 states. [2018-10-24 16:21:35,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:35,587 INFO L93 Difference]: Finished difference Result 70270 states and 99699 transitions. [2018-10-24 16:21:35,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:35,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2018-10-24 16:21:35,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:36,055 INFO L225 Difference]: With dead ends: 70270 [2018-10-24 16:21:36,055 INFO L226 Difference]: Without dead ends: 50911 [2018-10-24 16:21:36,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:21:36,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50911 states. [2018-10-24 16:21:36,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50911 to 50886. [2018-10-24 16:21:36,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50886 states. [2018-10-24 16:21:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50886 states to 50886 states and 65786 transitions. [2018-10-24 16:21:36,771 INFO L78 Accepts]: Start accepts. Automaton has 50886 states and 65786 transitions. Word has length 163 [2018-10-24 16:21:36,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:36,771 INFO L481 AbstractCegarLoop]: Abstraction has 50886 states and 65786 transitions. [2018-10-24 16:21:36,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:21:36,772 INFO L276 IsEmpty]: Start isEmpty. Operand 50886 states and 65786 transitions. [2018-10-24 16:21:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-10-24 16:21:36,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:36,799 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:21:36,799 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:36,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:36,800 INFO L82 PathProgramCache]: Analyzing trace with hash -12343617, now seen corresponding path program 1 times [2018-10-24 16:21:36,800 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:36,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:36,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:36,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:36,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-24 16:21:37,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:37,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:21:37,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:21:37,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:21:37,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:21:37,182 INFO L87 Difference]: Start difference. First operand 50886 states and 65786 transitions. Second operand 3 states. [2018-10-24 16:21:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:44,260 INFO L93 Difference]: Finished difference Result 140377 states and 182260 transitions. [2018-10-24 16:21:44,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:21:44,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 451 [2018-10-24 16:21:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:44,432 INFO L225 Difference]: With dead ends: 140377 [2018-10-24 16:21:44,433 INFO L226 Difference]: Without dead ends: 90281 [2018-10-24 16:21:44,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:21:44,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90281 states. [2018-10-24 16:21:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90281 to 90277. [2018-10-24 16:21:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90277 states. [2018-10-24 16:21:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90277 states to 90277 states and 109583 transitions. [2018-10-24 16:21:45,625 INFO L78 Accepts]: Start accepts. Automaton has 90277 states and 109583 transitions. Word has length 451 [2018-10-24 16:21:45,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:45,626 INFO L481 AbstractCegarLoop]: Abstraction has 90277 states and 109583 transitions. [2018-10-24 16:21:45,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:21:45,626 INFO L276 IsEmpty]: Start isEmpty. Operand 90277 states and 109583 transitions. [2018-10-24 16:21:45,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-10-24 16:21:45,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:45,659 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:45,660 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:45,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:45,660 INFO L82 PathProgramCache]: Analyzing trace with hash 919668609, now seen corresponding path program 1 times [2018-10-24 16:21:45,660 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:45,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:45,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:45,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:45,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:46,311 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-24 16:21:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 280 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-10-24 16:21:46,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:21:46,619 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 [2018-10-24 16:21:46,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:46,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:21:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-24 16:21:47,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:21:47,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:21:47,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:47,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:47,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:47,120 INFO L87 Difference]: Start difference. First operand 90277 states and 109583 transitions. Second operand 4 states. [2018-10-24 16:21:57,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:57,882 INFO L93 Difference]: Finished difference Result 216837 states and 260197 transitions. [2018-10-24 16:21:57,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:57,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 478 [2018-10-24 16:21:57,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:58,137 INFO L225 Difference]: With dead ends: 216837 [2018-10-24 16:21:58,138 INFO L226 Difference]: Without dead ends: 127350 [2018-10-24 16:21:58,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:58,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127350 states. [2018-10-24 16:21:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127350 to 112340. [2018-10-24 16:21:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112340 states. [2018-10-24 16:21:59,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112340 states to 112340 states and 132973 transitions. [2018-10-24 16:21:59,742 INFO L78 Accepts]: Start accepts. Automaton has 112340 states and 132973 transitions. Word has length 478 [2018-10-24 16:21:59,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:59,743 INFO L481 AbstractCegarLoop]: Abstraction has 112340 states and 132973 transitions. [2018-10-24 16:21:59,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:59,743 INFO L276 IsEmpty]: Start isEmpty. Operand 112340 states and 132973 transitions. [2018-10-24 16:21:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-10-24 16:21:59,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:59,782 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:21:59,783 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:59,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:59,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1449190218, now seen corresponding path program 1 times [2018-10-24 16:21:59,783 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:59,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:59,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:59,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:59,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:01,195 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:22:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-24 16:22:01,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:01,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:22:01,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:01,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:01,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:01,381 INFO L87 Difference]: Start difference. First operand 112340 states and 132973 transitions. Second operand 4 states. [2018-10-24 16:22:09,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:09,953 INFO L93 Difference]: Finished difference Result 233345 states and 275866 transitions. [2018-10-24 16:22:09,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:09,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 507 [2018-10-24 16:22:09,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:10,079 INFO L225 Difference]: With dead ends: 233345 [2018-10-24 16:22:10,079 INFO L226 Difference]: Without dead ends: 105178 [2018-10-24 16:22:10,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:10,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105178 states. [2018-10-24 16:22:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105178 to 98084. [2018-10-24 16:22:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98084 states. [2018-10-24 16:22:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98084 states to 98084 states and 113509 transitions. [2018-10-24 16:22:11,929 INFO L78 Accepts]: Start accepts. Automaton has 98084 states and 113509 transitions. Word has length 507 [2018-10-24 16:22:11,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:11,929 INFO L481 AbstractCegarLoop]: Abstraction has 98084 states and 113509 transitions. [2018-10-24 16:22:11,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 98084 states and 113509 transitions. [2018-10-24 16:22:11,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-10-24 16:22:11,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:11,955 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:11,956 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:11,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:11,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1208094930, now seen corresponding path program 1 times [2018-10-24 16:22:11,956 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:11,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:11,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:11,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:11,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-10-24 16:22:12,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:12,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:12,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:22:12,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:22:12,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:12,376 INFO L87 Difference]: Start difference. First operand 98084 states and 113509 transitions. Second operand 5 states. [2018-10-24 16:22:30,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:30,519 INFO L93 Difference]: Finished difference Result 279172 states and 323486 transitions. [2018-10-24 16:22:30,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:22:30,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 530 [2018-10-24 16:22:30,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:30,691 INFO L225 Difference]: With dead ends: 279172 [2018-10-24 16:22:30,691 INFO L226 Difference]: Without dead ends: 181878 [2018-10-24 16:22:30,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:30,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181878 states. [2018-10-24 16:22:33,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181878 to 178561. [2018-10-24 16:22:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178561 states. [2018-10-24 16:22:33,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178561 states to 178561 states and 204132 transitions. [2018-10-24 16:22:33,286 INFO L78 Accepts]: Start accepts. Automaton has 178561 states and 204132 transitions. Word has length 530 [2018-10-24 16:22:33,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:33,286 INFO L481 AbstractCegarLoop]: Abstraction has 178561 states and 204132 transitions. [2018-10-24 16:22:33,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:22:33,287 INFO L276 IsEmpty]: Start isEmpty. Operand 178561 states and 204132 transitions. [2018-10-24 16:22:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2018-10-24 16:22:33,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:33,322 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:33,322 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:33,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:33,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1080461888, now seen corresponding path program 1 times [2018-10-24 16:22:33,323 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:33,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:33,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:33,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:33,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:33,729 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 564 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-10-24 16:22:33,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:33,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:33,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:33,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:33,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:33,730 INFO L87 Difference]: Start difference. First operand 178561 states and 204132 transitions. Second operand 4 states. [2018-10-24 16:22:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:46,007 INFO L93 Difference]: Finished difference Result 441480 states and 505315 transitions. [2018-10-24 16:22:46,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:46,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 580 [2018-10-24 16:22:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:46,312 INFO L225 Difference]: With dead ends: 441480 [2018-10-24 16:22:46,312 INFO L226 Difference]: Without dead ends: 263709 [2018-10-24 16:22:46,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263709 states. [2018-10-24 16:22:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263709 to 255783. [2018-10-24 16:22:49,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255783 states. [2018-10-24 16:22:49,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255783 states to 255783 states and 285194 transitions. [2018-10-24 16:22:49,581 INFO L78 Accepts]: Start accepts. Automaton has 255783 states and 285194 transitions. Word has length 580 [2018-10-24 16:22:49,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:49,582 INFO L481 AbstractCegarLoop]: Abstraction has 255783 states and 285194 transitions. [2018-10-24 16:22:49,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 255783 states and 285194 transitions. [2018-10-24 16:22:49,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2018-10-24 16:22:49,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:49,601 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:49,601 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:49,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:49,602 INFO L82 PathProgramCache]: Analyzing trace with hash -54768319, now seen corresponding path program 1 times [2018-10-24 16:22:49,602 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:49,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:49,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:49,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:49,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 825 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-10-24 16:22:50,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:50,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:50,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:50,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:50,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:50,070 INFO L87 Difference]: Start difference. First operand 255783 states and 285194 transitions. Second operand 4 states. [2018-10-24 16:23:02,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:02,746 INFO L93 Difference]: Finished difference Result 509222 states and 567865 transitions. [2018-10-24 16:23:02,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:02,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 620 [2018-10-24 16:23:02,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:03,048 INFO L225 Difference]: With dead ends: 509222 [2018-10-24 16:23:03,048 INFO L226 Difference]: Without dead ends: 254229 [2018-10-24 16:23:03,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:03,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254229 states. [2018-10-24 16:23:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254229 to 253416. [2018-10-24 16:23:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253416 states. [2018-10-24 16:23:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253416 states to 253416 states and 276457 transitions. [2018-10-24 16:23:11,382 INFO L78 Accepts]: Start accepts. Automaton has 253416 states and 276457 transitions. Word has length 620 [2018-10-24 16:23:11,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:11,382 INFO L481 AbstractCegarLoop]: Abstraction has 253416 states and 276457 transitions. [2018-10-24 16:23:11,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:11,383 INFO L276 IsEmpty]: Start isEmpty. Operand 253416 states and 276457 transitions. [2018-10-24 16:23:11,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2018-10-24 16:23:11,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:11,404 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:11,404 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:11,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:11,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1989168516, now seen corresponding path program 1 times [2018-10-24 16:23:11,405 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:11,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:11,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:11,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:11,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 746 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-10-24 16:23:12,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:12,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:12,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:12,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:12,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:12,733 INFO L87 Difference]: Start difference. First operand 253416 states and 276457 transitions. Second operand 4 states. [2018-10-24 16:23:26,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:26,187 INFO L93 Difference]: Finished difference Result 593683 states and 648028 transitions. [2018-10-24 16:23:26,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:26,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 644 [2018-10-24 16:23:26,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:26,606 INFO L225 Difference]: With dead ends: 593683 [2018-10-24 16:23:26,606 INFO L226 Difference]: Without dead ends: 341057 [2018-10-24 16:23:26,736 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 [2018-10-24 16:23:26,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341057 states. [2018-10-24 16:23:30,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341057 to 340122. [2018-10-24 16:23:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340122 states. [2018-10-24 16:23:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340122 states to 340122 states and 369335 transitions. [2018-10-24 16:23:31,585 INFO L78 Accepts]: Start accepts. Automaton has 340122 states and 369335 transitions. Word has length 644 [2018-10-24 16:23:31,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:31,585 INFO L481 AbstractCegarLoop]: Abstraction has 340122 states and 369335 transitions. [2018-10-24 16:23:31,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 340122 states and 369335 transitions. [2018-10-24 16:23:31,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2018-10-24 16:23:31,608 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:31,609 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:31,609 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:31,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:31,609 INFO L82 PathProgramCache]: Analyzing trace with hash -186113841, now seen corresponding path program 1 times [2018-10-24 16:23:31,610 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:31,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:31,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:31,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:31,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:32,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1130 backedges. 820 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-10-24 16:23:32,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:32,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:32,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:32,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:32,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:32,413 INFO L87 Difference]: Start difference. First operand 340122 states and 369335 transitions. Second operand 4 states. [2018-10-24 16:23:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:43,730 INFO L93 Difference]: Finished difference Result 661274 states and 719130 transitions. [2018-10-24 16:23:43,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:43,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 663 [2018-10-24 16:23:43,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:44,156 INFO L225 Difference]: With dead ends: 661274 [2018-10-24 16:23:44,156 INFO L226 Difference]: Without dead ends: 321942 [2018-10-24 16:23:44,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:44,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321942 states. Received shutdown request... [2018-10-24 16:23:44,807 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:23:44,811 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:23:44,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:23:44 BoogieIcfgContainer [2018-10-24 16:23:44,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:23:44,812 INFO L168 Benchmark]: Toolchain (without parser) took 226967.75 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 67.6 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-10-24 16:23:44,813 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-24 16:23:44,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2640.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:44,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 787.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 811.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:44,816 INFO L168 Benchmark]: Boogie Preprocessor took 475.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 70.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:44,817 INFO L168 Benchmark]: RCFGBuilder took 14800.35 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 251.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 21.2 MB). Peak memory consumption was 600.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:44,818 INFO L168 Benchmark]: TraceAbstraction took 208258.52 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 1.3 GB in the end (delta: 731.1 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-10-24 16:23:44,823 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2640.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 787.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 811.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 475.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 70.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14800.35 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 251.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 21.2 MB). Peak memory consumption was 600.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208258.52 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 1.3 GB in the end (delta: 731.1 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 120). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 208.1s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 172.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10019 SDtfs, 29288 SDslu, 3243 SDs, 0 SdLazy, 60348 SolverSat, 16934 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 137.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 692 GetRequests, 656 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=340122occurred in iteration=12, 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: 25.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 37716 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 5679 NumberOfCodeBlocks, 5679 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 5664 ConstructedInterpolants, 0 QuantifiedInterpolants, 5570796 SizeOfPredicates, 1 NumberOfNonLiveVariables, 828 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 6391/6399 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown