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/Problem17_label07_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:24:09,508 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:24:09,510 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:24:09,523 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:24:09,523 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:24:09,524 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:24:09,526 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:24:09,528 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:24:09,529 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:24:09,530 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:24:09,531 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:24:09,531 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:24:09,532 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:24:09,534 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:24:09,535 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:24:09,536 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:24:09,537 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:24:09,543 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:24:09,547 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:24:09,553 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:24:09,555 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:24:09,556 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:24:09,558 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:24:09,558 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:24:09,558 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:24:09,562 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:24:09,565 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:24:09,565 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:24:09,568 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:24:09,569 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:24:09,569 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:24:09,570 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:24:09,575 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 18:24:09,603 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:24:09,603 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:24:09,604 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:24:09,604 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:24:09,605 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:24:09,605 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:24:09,605 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:24:09,606 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:24:09,606 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:24:09,606 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:24:09,606 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:24:09,606 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:24:09,606 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:24:09,607 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:24:09,607 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:24:09,607 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:24:09,607 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:24:09,607 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:24:09,608 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:24:09,610 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:24:09,610 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:24:09,610 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:24:09,610 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:24:09,610 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:24:09,610 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:24:09,611 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:24:09,611 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:24:09,611 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:24:09,658 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:24:09,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:24:09,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:24:09,682 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:24:09,682 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:24:09,683 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label07_false-unreach-call.c [2018-10-23 18:24:09,744 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48eeaa9c2/4f0d8db621184d049ace0b9458400884/FLAGc12ef841e [2018-10-23 18:24:10,501 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:24:10,502 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label07_false-unreach-call.c [2018-10-23 18:24:10,532 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48eeaa9c2/4f0d8db621184d049ace0b9458400884/FLAGc12ef841e [2018-10-23 18:24:10,553 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48eeaa9c2/4f0d8db621184d049ace0b9458400884 [2018-10-23 18:24:10,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:24:10,569 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:24:10,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:24:10,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:24:10,577 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:24:10,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:24:10" (1/1) ... [2018-10-23 18:24:10,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:24:10, skipping insertion in model container [2018-10-23 18:24:10,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:24:10" (1/1) ... [2018-10-23 18:24:10,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:24:10,731 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:24:11,838 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:24:11,843 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:24:12,213 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:24:12,236 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:24:12,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:24:12 WrapperNode [2018-10-23 18:24:12,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:24:12,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:24:12,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:24:12,238 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:24:12,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:24:12" (1/1) ... [2018-10-23 18:24:12,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:24:12" (1/1) ... [2018-10-23 18:24:12,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:24:12,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:24:12,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:24:12,795 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:24:12,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:24:12" (1/1) ... [2018-10-23 18:24:12,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:24:12" (1/1) ... [2018-10-23 18:24:12,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:24:12" (1/1) ... [2018-10-23 18:24:12,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:24:12" (1/1) ... [2018-10-23 18:24:12,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:24:12" (1/1) ... [2018-10-23 18:24:12,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:24:12" (1/1) ... [2018-10-23 18:24:13,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:24:12" (1/1) ... [2018-10-23 18:24:13,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:24:13,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:24:13,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:24:13,082 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:24:13,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:24:12" (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 18:24:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:24:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:24:13,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:24:23,704 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:24:23,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:24:23 BoogieIcfgContainer [2018-10-23 18:24:23,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:24:23,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:24:23,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:24:23,710 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:24:23,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:24:10" (1/3) ... [2018-10-23 18:24:23,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c1c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:24:23, skipping insertion in model container [2018-10-23 18:24:23,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:24:12" (2/3) ... [2018-10-23 18:24:23,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c1c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:24:23, skipping insertion in model container [2018-10-23 18:24:23,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:24:23" (3/3) ... [2018-10-23 18:24:23,714 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label07_false-unreach-call.c [2018-10-23 18:24:23,724 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:24:23,734 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:24:23,752 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:24:23,800 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:24:23,801 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:24:23,801 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:24:23,801 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:24:23,802 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:24:23,802 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:24:23,802 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:24:23,802 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:24:23,802 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:24:23,835 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 18:24:23,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-23 18:24:23,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:24:23,844 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] [2018-10-23 18:24:23,847 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:24:23,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:24:23,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1880720510, now seen corresponding path program 1 times [2018-10-23 18:24:23,856 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:24:23,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:24:23,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:24:23,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:24:23,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:24:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:24:24,304 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 18:24:24,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:24:24,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:24:24,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:24:24,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:24:24,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:24:24,332 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 18:24:38,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:24:38,022 INFO L93 Difference]: Finished difference Result 2099 states and 3904 transitions. [2018-10-23 18:24:38,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:24:38,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-10-23 18:24:38,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:24:38,064 INFO L225 Difference]: With dead ends: 2099 [2018-10-23 18:24:38,064 INFO L226 Difference]: Without dead ends: 1501 [2018-10-23 18:24:38,074 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 18:24:38,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2018-10-23 18:24:38,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1499. [2018-10-23 18:24:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1499 states. [2018-10-23 18:24:38,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2373 transitions. [2018-10-23 18:24:38,237 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2373 transitions. Word has length 28 [2018-10-23 18:24:38,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:24:38,238 INFO L481 AbstractCegarLoop]: Abstraction has 1499 states and 2373 transitions. [2018-10-23 18:24:38,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:24:38,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2373 transitions. [2018-10-23 18:24:38,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-23 18:24:38,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:24:38,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:38,249 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:24:38,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:24:38,249 INFO L82 PathProgramCache]: Analyzing trace with hash 352971439, now seen corresponding path program 1 times [2018-10-23 18:24:38,250 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:24:38,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:24:38,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:24:38,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:24:38,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:24:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:24:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:24:38,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:24:38,625 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 18:24:38,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:24:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:24:38,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:24:39,112 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 14 [2018-10-23 18:24:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:24:39,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:24:39,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:24:39,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:24:39,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:24:39,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:24:39,279 INFO L87 Difference]: Start difference. First operand 1499 states and 2373 transitions. Second operand 7 states. [2018-10-23 18:25:06,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:25:06,978 INFO L93 Difference]: Finished difference Result 8701 states and 13886 transitions. [2018-10-23 18:25:06,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:25:06,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2018-10-23 18:25:06,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:25:07,016 INFO L225 Difference]: With dead ends: 8701 [2018-10-23 18:25:07,017 INFO L226 Difference]: Without dead ends: 7204 [2018-10-23 18:25:07,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:25:07,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7204 states. [2018-10-23 18:25:07,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7204 to 5849. [2018-10-23 18:25:07,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5849 states. [2018-10-23 18:25:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5849 states to 5849 states and 8360 transitions. [2018-10-23 18:25:07,150 INFO L78 Accepts]: Start accepts. Automaton has 5849 states and 8360 transitions. Word has length 99 [2018-10-23 18:25:07,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:25:07,150 INFO L481 AbstractCegarLoop]: Abstraction has 5849 states and 8360 transitions. [2018-10-23 18:25:07,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:25:07,151 INFO L276 IsEmpty]: Start isEmpty. Operand 5849 states and 8360 transitions. [2018-10-23 18:25:07,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-23 18:25:07,157 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:25:07,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:07,158 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:25:07,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:25:07,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1372704837, now seen corresponding path program 1 times [2018-10-23 18:25:07,159 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:25:07,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:25:07,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:25:07,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:25:07,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:25:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:25:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:25:07,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:25:07,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:25:07,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:25:07,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:25:07,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:25:07,320 INFO L87 Difference]: Start difference. First operand 5849 states and 8360 transitions. Second operand 3 states. [2018-10-23 18:25:11,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:25:11,008 INFO L93 Difference]: Finished difference Result 16388 states and 23801 transitions. [2018-10-23 18:25:11,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:25:11,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2018-10-23 18:25:11,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:25:11,049 INFO L225 Difference]: With dead ends: 16388 [2018-10-23 18:25:11,050 INFO L226 Difference]: Without dead ends: 8320 [2018-10-23 18:25:11,061 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 [2018-10-23 18:25:11,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8320 states. [2018-10-23 18:25:11,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8320 to 8319. [2018-10-23 18:25:11,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8319 states. [2018-10-23 18:25:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8319 states to 8319 states and 9999 transitions. [2018-10-23 18:25:11,218 INFO L78 Accepts]: Start accepts. Automaton has 8319 states and 9999 transitions. Word has length 140 [2018-10-23 18:25:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:25:11,219 INFO L481 AbstractCegarLoop]: Abstraction has 8319 states and 9999 transitions. [2018-10-23 18:25:11,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:25:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 8319 states and 9999 transitions. [2018-10-23 18:25:11,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-23 18:25:11,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:25:11,223 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, 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:25:11,223 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:25:11,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:25:11,224 INFO L82 PathProgramCache]: Analyzing trace with hash -210556358, now seen corresponding path program 1 times [2018-10-23 18:25:11,224 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:25:11,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:25:11,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:25:11,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:25:11,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:25:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:25:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 107 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-10-23 18:25:11,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:25:11,576 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 18:25:11,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:25:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:25:11,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:25:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-23 18:25:11,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:25:11,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 18:25:11,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:25:11,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:25:11,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:25:11,855 INFO L87 Difference]: Start difference. First operand 8319 states and 9999 transitions. Second operand 5 states. [2018-10-23 18:25:19,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:25:19,616 INFO L93 Difference]: Finished difference Result 20466 states and 25307 transitions. [2018-10-23 18:25:19,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:25:19,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2018-10-23 18:25:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:25:19,659 INFO L225 Difference]: With dead ends: 20466 [2018-10-23 18:25:19,659 INFO L226 Difference]: Without dead ends: 12576 [2018-10-23 18:25:19,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:25:19,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12576 states. [2018-10-23 18:25:19,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12576 to 12150. [2018-10-23 18:25:19,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12150 states. [2018-10-23 18:25:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12150 states to 12150 states and 14285 transitions. [2018-10-23 18:25:19,894 INFO L78 Accepts]: Start accepts. Automaton has 12150 states and 14285 transitions. Word has length 195 [2018-10-23 18:25:19,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:25:19,895 INFO L481 AbstractCegarLoop]: Abstraction has 12150 states and 14285 transitions. [2018-10-23 18:25:19,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:25:19,895 INFO L276 IsEmpty]: Start isEmpty. Operand 12150 states and 14285 transitions. [2018-10-23 18:25:19,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-23 18:25:19,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:25:19,901 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 18:25:19,901 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:25:19,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:25:19,901 INFO L82 PathProgramCache]: Analyzing trace with hash -248448952, now seen corresponding path program 1 times [2018-10-23 18:25:19,902 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:25:19,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:25:19,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:25:19,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:25:19,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:25:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:25:20,672 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-23 18:25:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 196 proven. 83 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-23 18:25:20,883 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:25:20,883 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 18:25:20,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:25:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:25:20,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:25:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 196 proven. 83 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-23 18:25:21,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:25:21,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-10-23 18:25:21,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 18:25:21,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 18:25:21,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:25:21,229 INFO L87 Difference]: Start difference. First operand 12150 states and 14285 transitions. Second operand 9 states. [2018-10-23 18:25:36,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:25:36,965 INFO L93 Difference]: Finished difference Result 27296 states and 32019 transitions. [2018-10-23 18:25:36,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:25:36,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 291 [2018-10-23 18:25:36,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:25:37,012 INFO L225 Difference]: With dead ends: 27296 [2018-10-23 18:25:37,012 INFO L226 Difference]: Without dead ends: 15148 [2018-10-23 18:25:37,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-10-23 18:25:37,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2018-10-23 18:25:37,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 14712. [2018-10-23 18:25:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14712 states. [2018-10-23 18:25:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14712 states to 14712 states and 16941 transitions. [2018-10-23 18:25:37,237 INFO L78 Accepts]: Start accepts. Automaton has 14712 states and 16941 transitions. Word has length 291 [2018-10-23 18:25:37,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:25:37,237 INFO L481 AbstractCegarLoop]: Abstraction has 14712 states and 16941 transitions. [2018-10-23 18:25:37,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 18:25:37,238 INFO L276 IsEmpty]: Start isEmpty. Operand 14712 states and 16941 transitions. [2018-10-23 18:25:37,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-10-23 18:25:37,248 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:25:37,249 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 18:25:37,249 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:25:37,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:25:37,249 INFO L82 PathProgramCache]: Analyzing trace with hash -369737304, now seen corresponding path program 1 times [2018-10-23 18:25:37,250 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:25:37,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:25:37,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:25:37,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:25:37,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:25:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:25:37,768 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-23 18:25:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 385 proven. 83 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-23 18:25:38,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:25:38,685 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 18:25:38,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:25:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:25:38,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:25:39,478 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-10-23 18:25:39,965 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 20 [2018-10-23 18:25:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 295 proven. 272 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-23 18:25:40,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:25:40,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2018-10-23 18:25:40,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-23 18:25:40,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-23 18:25:40,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-10-23 18:25:40,582 INFO L87 Difference]: Start difference. First operand 14712 states and 16941 transitions. Second operand 14 states. [2018-10-23 18:26:12,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:26:12,007 INFO L93 Difference]: Finished difference Result 36375 states and 41547 transitions. [2018-10-23 18:26:12,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-23 18:26:12,008 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 417 [2018-10-23 18:26:12,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:26:12,047 INFO L225 Difference]: With dead ends: 36375 [2018-10-23 18:26:12,047 INFO L226 Difference]: Without dead ends: 22517 [2018-10-23 18:26:12,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 413 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2018-10-23 18:26:12,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22517 states. [2018-10-23 18:26:12,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22517 to 20249. [2018-10-23 18:26:12,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20249 states. [2018-10-23 18:26:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20249 states to 20249 states and 22705 transitions. [2018-10-23 18:26:12,341 INFO L78 Accepts]: Start accepts. Automaton has 20249 states and 22705 transitions. Word has length 417 [2018-10-23 18:26:12,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:26:12,341 INFO L481 AbstractCegarLoop]: Abstraction has 20249 states and 22705 transitions. [2018-10-23 18:26:12,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-23 18:26:12,342 INFO L276 IsEmpty]: Start isEmpty. Operand 20249 states and 22705 transitions. [2018-10-23 18:26:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-10-23 18:26:12,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:26:12,355 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:12,355 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:26:12,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:26:12,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1875420535, now seen corresponding path program 1 times [2018-10-23 18:26:12,356 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:26:12,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:26:12,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:12,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:12,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 435 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-10-23 18:26:12,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:26:12,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:26:12,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:26:12,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:26:12,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:26:12,853 INFO L87 Difference]: Start difference. First operand 20249 states and 22705 transitions. Second operand 3 states. [2018-10-23 18:26:16,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:26:16,190 INFO L93 Difference]: Finished difference Result 50726 states and 57605 transitions. [2018-10-23 18:26:16,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:26:16,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 455 [2018-10-23 18:26:16,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:26:16,232 INFO L225 Difference]: With dead ends: 50726 [2018-10-23 18:26:16,232 INFO L226 Difference]: Without dead ends: 30038 [2018-10-23 18:26:16,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:26:16,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30038 states. [2018-10-23 18:26:16,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30038 to 28746. [2018-10-23 18:26:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28746 states. [2018-10-23 18:26:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28746 states to 28746 states and 31790 transitions. [2018-10-23 18:26:16,608 INFO L78 Accepts]: Start accepts. Automaton has 28746 states and 31790 transitions. Word has length 455 [2018-10-23 18:26:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:26:16,609 INFO L481 AbstractCegarLoop]: Abstraction has 28746 states and 31790 transitions. [2018-10-23 18:26:16,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:26:16,610 INFO L276 IsEmpty]: Start isEmpty. Operand 28746 states and 31790 transitions. [2018-10-23 18:26:16,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2018-10-23 18:26:16,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:26:16,627 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:26:16,628 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:26:16,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:26:16,628 INFO L82 PathProgramCache]: Analyzing trace with hash -2083126921, now seen corresponding path program 1 times [2018-10-23 18:26:16,628 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:26:16,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:26:16,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:16,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:16,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 129 proven. 721 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-23 18:26:18,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:26:18,182 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 18:26:18,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:18,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:26:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 449 proven. 219 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-10-23 18:26:19,428 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:26:19,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2018-10-23 18:26:19,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 18:26:19,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 18:26:19,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:26:19,430 INFO L87 Difference]: Start difference. First operand 28746 states and 31790 transitions. Second operand 10 states. [2018-10-23 18:26:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:26:49,554 INFO L93 Difference]: Finished difference Result 107450 states and 118909 transitions. [2018-10-23 18:26:49,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-23 18:26:49,555 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 473 [2018-10-23 18:26:49,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:26:49,679 INFO L225 Difference]: With dead ends: 107450 [2018-10-23 18:26:49,679 INFO L226 Difference]: Without dead ends: 77420 [2018-10-23 18:26:49,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 491 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2018-10-23 18:26:49,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77420 states. [2018-10-23 18:26:50,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77420 to 49192. [2018-10-23 18:26:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49192 states. [2018-10-23 18:26:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49192 states to 49192 states and 53170 transitions. [2018-10-23 18:26:50,495 INFO L78 Accepts]: Start accepts. Automaton has 49192 states and 53170 transitions. Word has length 473 [2018-10-23 18:26:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:26:50,496 INFO L481 AbstractCegarLoop]: Abstraction has 49192 states and 53170 transitions. [2018-10-23 18:26:50,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 18:26:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 49192 states and 53170 transitions. [2018-10-23 18:26:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-10-23 18:26:50,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:26:50,513 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, 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, 5, 5, 4, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 18:26:50,513 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:26:50,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:26:50,514 INFO L82 PathProgramCache]: Analyzing trace with hash -975354474, now seen corresponding path program 1 times [2018-10-23 18:26:50,514 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:26:50,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:26:50,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:50,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:50,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:51,061 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-23 18:26:51,229 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-23 18:26:51,865 WARN L179 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 14 [2018-10-23 18:26:52,320 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 12 [2018-10-23 18:26:52,646 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 12 [2018-10-23 18:26:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 449 proven. 513 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-23 18:26:53,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:26:53,202 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:26:53,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:53,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:27:21,830 WARN L179 SmtUtils]: Spent 28.19 s on a formula simplification. DAG size of input: 122 DAG size of output: 98 [2018-10-23 18:27:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 764 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-10-23 18:27:24,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:27:24,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-10-23 18:27:24,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 18:27:24,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 18:27:24,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:27:24,554 INFO L87 Difference]: Start difference. First operand 49192 states and 53170 transitions. Second operand 10 states. [2018-10-23 18:27:39,617 WARN L179 SmtUtils]: Spent 14.46 s on a formula simplification that was a NOOP. DAG size: 109 Received shutdown request... [2018-10-23 18:28:07,244 WARN L187 SmtUtils]: Removed 8 from assertion stack [2018-10-23 18:28:07,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:28:07,245 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:28:07,248 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:28:07,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:28:07 BoogieIcfgContainer [2018-10-23 18:28:07,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:28:07,250 INFO L168 Benchmark]: Toolchain (without parser) took 236682.07 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 18:28:07,251 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:28:07,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1665.86 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:28:07,252 INFO L168 Benchmark]: Boogie Procedure Inliner took 557.48 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 738.2 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -862.4 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:28:07,254 INFO L168 Benchmark]: Boogie Preprocessor took 285.83 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:28:07,254 INFO L168 Benchmark]: RCFGBuilder took 10624.14 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 478.7 MB). Peak memory consumption was 478.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:28:07,255 INFO L168 Benchmark]: TraceAbstraction took 223542.40 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: -792.9 MB). Peak memory consumption was 725.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:28:07,260 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1665.86 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 557.48 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 738.2 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -862.4 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 285.83 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10624.14 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 478.7 MB). Peak memory consumption was 478.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223542.40 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: -792.9 MB). Peak memory consumption was 725.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 89). Cancelled while BasicCegarLoop was constructing difference of abstraction (49192states) and FLOYD_HOARE automaton (currently 5 states, 10 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 109. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 223.4s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 176.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4016 SDtfs, 27166 SDslu, 3234 SDs, 0 SdLazy, 54003 SolverSat, 5800 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 127.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2066 GetRequests, 1980 SyntacticMatches, 8 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 50.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49192occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 34008 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 41.1s InterpolantComputationTime, 4553 NumberOfCodeBlocks, 4553 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 4538 ConstructedInterpolants, 231 QuantifiedInterpolants, 23979033 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2692 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 4581/6585 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown