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_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:56:53,885 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:56:53,887 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:56:53,906 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:56:53,906 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:56:53,908 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:56:53,909 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:56:53,911 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:56:53,912 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:56:53,913 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:56:53,914 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:56:53,914 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:56:53,915 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:56:53,916 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:56:53,917 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:56:53,918 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:56:53,919 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:56:53,921 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:56:53,923 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:56:53,925 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:56:53,926 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:56:53,927 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:56:53,930 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 21:56:53,939 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 21:56:53,955 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:56:53,956 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:56:53,956 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:56:53,957 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:56:53,957 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:56:53,958 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:56:53,958 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:56:53,958 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:56:53,958 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:56:53,958 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:56:53,959 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:56:53,959 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:56:53,959 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:56:53,959 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:56:53,959 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:56:53,960 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:56:53,960 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:56:53,960 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:56:53,960 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:56:53,960 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:56:53,961 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:56:53,961 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:56:53,961 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:56:53,961 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:56:53,962 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:56:53,962 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:56:53,962 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:56:53,962 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:56:54,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:56:54,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:56:54,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:56:54,025 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:56:54,025 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:56:54,026 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label47_true-unreach-call.c [2018-10-26 21:56:54,085 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d3b4fc5b0/9ac5250c4d014686a82c3460a691a87d/FLAGe8f5ce717 [2018-10-26 21:56:54,792 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:56:54,794 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label47_true-unreach-call.c [2018-10-26 21:56:54,821 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d3b4fc5b0/9ac5250c4d014686a82c3460a691a87d/FLAGe8f5ce717 [2018-10-26 21:56:54,844 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d3b4fc5b0/9ac5250c4d014686a82c3460a691a87d [2018-10-26 21:56:54,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:56:54,860 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:56:54,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:56:54,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:56:54,867 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:56:54,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:56:54" (1/1) ... [2018-10-26 21:56:54,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aea84ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:54, skipping insertion in model container [2018-10-26 21:56:54,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:56:54" (1/1) ... [2018-10-26 21:56:54,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:56:55,027 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:56:56,018 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:56:56,022 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:56:56,440 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:56:56,463 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:56:56,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:56 WrapperNode [2018-10-26 21:56:56,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:56:56,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:56:56,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:56:56,465 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:56:56,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:56" (1/1) ... [2018-10-26 21:56:56,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:56" (1/1) ... [2018-10-26 21:56:57,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:56:57,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:56:57,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:56:57,007 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:56:57,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:56" (1/1) ... [2018-10-26 21:56:57,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:56" (1/1) ... [2018-10-26 21:56:57,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:56" (1/1) ... [2018-10-26 21:56:57,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:56" (1/1) ... [2018-10-26 21:56:57,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:56" (1/1) ... [2018-10-26 21:56:57,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:56" (1/1) ... [2018-10-26 21:56:57,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:56" (1/1) ... [2018-10-26 21:56:57,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:56:57,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:56:57,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:56:57,328 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:56:57,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:56:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:56:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:56:57,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:57:07,325 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:57:07,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:57:07 BoogieIcfgContainer [2018-10-26 21:57:07,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:57:07,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:57:07,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:57:07,331 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:57:07,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:56:54" (1/3) ... [2018-10-26 21:57:07,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec3bff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:57:07, skipping insertion in model container [2018-10-26 21:57:07,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:56" (2/3) ... [2018-10-26 21:57:07,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec3bff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:57:07, skipping insertion in model container [2018-10-26 21:57:07,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:57:07" (3/3) ... [2018-10-26 21:57:07,335 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label47_true-unreach-call.c [2018-10-26 21:57:07,346 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:57:07,356 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:57:07,374 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:57:07,416 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:57:07,417 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:57:07,417 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:57:07,418 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:57:07,418 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:57:07,418 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:57:07,418 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:57:07,418 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:57:07,419 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:57:07,451 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-26 21:57:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-26 21:57:07,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:57:07,461 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:57:07,464 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:57:07,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:57:07,470 INFO L82 PathProgramCache]: Analyzing trace with hash 147574146, now seen corresponding path program 1 times [2018-10-26 21:57:07,472 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:57:07,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:57:07,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:57:07,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:57:07,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:57:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:57:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:57:07,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:57:07,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:57:07,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:57:07,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:57:07,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:57:07,925 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-26 21:57:23,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:57:23,134 INFO L93 Difference]: Finished difference Result 2102 states and 3914 transitions. [2018-10-26 21:57:23,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:57:23,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-10-26 21:57:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:57:23,168 INFO L225 Difference]: With dead ends: 2102 [2018-10-26 21:57:23,169 INFO L226 Difference]: Without dead ends: 1504 [2018-10-26 21:57:23,176 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 [2018-10-26 21:57:23,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2018-10-26 21:57:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1491. [2018-10-26 21:57:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2018-10-26 21:57:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2416 transitions. [2018-10-26 21:57:23,328 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2416 transitions. Word has length 45 [2018-10-26 21:57:23,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:57:23,329 INFO L481 AbstractCegarLoop]: Abstraction has 1491 states and 2416 transitions. [2018-10-26 21:57:23,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:57:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2416 transitions. [2018-10-26 21:57:23,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-26 21:57:23,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:57:23,339 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, 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] [2018-10-26 21:57:23,339 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:57:23,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:57:23,340 INFO L82 PathProgramCache]: Analyzing trace with hash -445685495, now seen corresponding path program 1 times [2018-10-26 21:57:23,340 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:57:23,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:57:23,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:57:23,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:57:23,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:57:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:57:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:57:23,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:57:23,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:57:23,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:57:23,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:57:23,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:57:23,668 INFO L87 Difference]: Start difference. First operand 1491 states and 2416 transitions. Second operand 4 states. [2018-10-26 21:57:34,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:57:34,102 INFO L93 Difference]: Finished difference Result 4268 states and 6993 transitions. [2018-10-26 21:57:34,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:57:34,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-10-26 21:57:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:57:34,119 INFO L225 Difference]: With dead ends: 4268 [2018-10-26 21:57:34,119 INFO L226 Difference]: Without dead ends: 2779 [2018-10-26 21:57:34,125 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 [2018-10-26 21:57:34,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2018-10-26 21:57:34,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2779. [2018-10-26 21:57:34,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2018-10-26 21:57:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3841 transitions. [2018-10-26 21:57:34,186 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3841 transitions. Word has length 113 [2018-10-26 21:57:34,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:57:34,186 INFO L481 AbstractCegarLoop]: Abstraction has 2779 states and 3841 transitions. [2018-10-26 21:57:34,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:57:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3841 transitions. [2018-10-26 21:57:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-26 21:57:34,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:57:34,190 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, 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] [2018-10-26 21:57:34,190 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:57:34,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:57:34,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1602757590, now seen corresponding path program 1 times [2018-10-26 21:57:34,191 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:57:34,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:57:34,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:57:34,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:57:34,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:57:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:57:34,450 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:57:34,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:57:34,450 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:57:34,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:57:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:57:34,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:57:35,132 WARN L179 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 28 [2018-10-26 21:57:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:57:35,582 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:57:35,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-26 21:57:35,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:57:35,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:57:35,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:57:35,587 INFO L87 Difference]: Start difference. First operand 2779 states and 3841 transitions. Second operand 8 states. [2018-10-26 21:57:35,841 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 21:58:08,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:58:08,615 INFO L93 Difference]: Finished difference Result 17528 states and 24013 transitions. [2018-10-26 21:58:08,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 21:58:08,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2018-10-26 21:58:08,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:58:08,662 INFO L225 Difference]: With dead ends: 17528 [2018-10-26 21:58:08,662 INFO L226 Difference]: Without dead ends: 9535 [2018-10-26 21:58:08,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2018-10-26 21:58:08,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9535 states. [2018-10-26 21:58:08,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9535 to 8676. [2018-10-26 21:58:08,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8676 states. [2018-10-26 21:58:08,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8676 states to 8676 states and 10459 transitions. [2018-10-26 21:58:08,833 INFO L78 Accepts]: Start accepts. Automaton has 8676 states and 10459 transitions. Word has length 116 [2018-10-26 21:58:08,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:58:08,834 INFO L481 AbstractCegarLoop]: Abstraction has 8676 states and 10459 transitions. [2018-10-26 21:58:08,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:58:08,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8676 states and 10459 transitions. [2018-10-26 21:58:08,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-26 21:58:08,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:58:08,840 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, 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, 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] [2018-10-26 21:58:08,840 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:58:08,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:58:08,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1967348037, now seen corresponding path program 1 times [2018-10-26 21:58:08,841 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:58:08,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:58:08,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:08,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:58:08,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:58:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-26 21:58:09,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:58:09,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:58:09,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:58:09,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:58:09,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:58:09,107 INFO L87 Difference]: Start difference. First operand 8676 states and 10459 transitions. Second operand 3 states. [2018-10-26 21:58:11,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:58:11,829 INFO L93 Difference]: Finished difference Result 21180 states and 25882 transitions. [2018-10-26 21:58:11,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:58:11,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 266 [2018-10-26 21:58:11,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:58:11,885 INFO L225 Difference]: With dead ends: 21180 [2018-10-26 21:58:11,885 INFO L226 Difference]: Without dead ends: 12933 [2018-10-26 21:58:11,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:58:11,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12933 states. [2018-10-26 21:58:12,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12933 to 12933. [2018-10-26 21:58:12,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12933 states. [2018-10-26 21:58:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12933 states to 12933 states and 15114 transitions. [2018-10-26 21:58:12,127 INFO L78 Accepts]: Start accepts. Automaton has 12933 states and 15114 transitions. Word has length 266 [2018-10-26 21:58:12,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:58:12,128 INFO L481 AbstractCegarLoop]: Abstraction has 12933 states and 15114 transitions. [2018-10-26 21:58:12,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:58:12,128 INFO L276 IsEmpty]: Start isEmpty. Operand 12933 states and 15114 transitions. [2018-10-26 21:58:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-10-26 21:58:12,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:58:12,136 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, 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, 3, 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] [2018-10-26 21:58:12,136 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:58:12,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:58:12,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1375808652, now seen corresponding path program 1 times [2018-10-26 21:58:12,137 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:58:12,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:58:12,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:12,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:58:12,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:58:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 369 proven. 83 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-10-26 21:58:12,721 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:58:12,721 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:58:12,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:58:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:58:12,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:58:13,326 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 369 proven. 83 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-10-26 21:58:13,348 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:58:13,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-26 21:58:13,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:58:13,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:58:13,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:58:13,350 INFO L87 Difference]: Start difference. First operand 12933 states and 15114 transitions. Second operand 7 states. [2018-10-26 21:58:28,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:58:28,333 INFO L93 Difference]: Finished difference Result 38685 states and 45422 transitions. [2018-10-26 21:58:28,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:58:28,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2018-10-26 21:58:28,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:58:28,380 INFO L225 Difference]: With dead ends: 38685 [2018-10-26 21:58:28,380 INFO L226 Difference]: Without dead ends: 24020 [2018-10-26 21:58:28,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-26 21:58:28,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24020 states. [2018-10-26 21:58:28,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24020 to 21440. [2018-10-26 21:58:28,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21440 states. [2018-10-26 21:58:28,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21440 states to 21440 states and 24176 transitions. [2018-10-26 21:58:28,687 INFO L78 Accepts]: Start accepts. Automaton has 21440 states and 24176 transitions. Word has length 371 [2018-10-26 21:58:28,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:58:28,687 INFO L481 AbstractCegarLoop]: Abstraction has 21440 states and 24176 transitions. [2018-10-26 21:58:28,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:58:28,688 INFO L276 IsEmpty]: Start isEmpty. Operand 21440 states and 24176 transitions. [2018-10-26 21:58:28,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-10-26 21:58:28,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:58:28,706 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, 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, 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] [2018-10-26 21:58:28,706 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:58:28,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:58:28,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1457262941, now seen corresponding path program 1 times [2018-10-26 21:58:28,707 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:58:28,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:58:28,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:28,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:58:28,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:58:29,465 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-26 21:58:29,699 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-10-26 21:58:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 274 proven. 83 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-26 21:58:30,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:58:30,016 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:58:30,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:58:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:58:30,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:58:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 274 proven. 83 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-26 21:58:30,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:58:30,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-10-26 21:58:30,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 21:58:30,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 21:58:30,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:58:30,452 INFO L87 Difference]: Start difference. First operand 21440 states and 24176 transitions. Second operand 9 states. [2018-10-26 21:58:43,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:58:43,781 INFO L93 Difference]: Finished difference Result 45983 states and 51573 transitions. [2018-10-26 21:58:43,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:58:43,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 410 [2018-10-26 21:58:43,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:58:43,823 INFO L225 Difference]: With dead ends: 45983 [2018-10-26 21:58:43,824 INFO L226 Difference]: Without dead ends: 24971 [2018-10-26 21:58:43,848 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 408 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-10-26 21:58:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24971 states. [2018-10-26 21:58:44,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24971 to 21866. [2018-10-26 21:58:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21866 states. [2018-10-26 21:58:44,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21866 states to 21866 states and 24605 transitions. [2018-10-26 21:58:44,137 INFO L78 Accepts]: Start accepts. Automaton has 21866 states and 24605 transitions. Word has length 410 [2018-10-26 21:58:44,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:58:44,138 INFO L481 AbstractCegarLoop]: Abstraction has 21866 states and 24605 transitions. [2018-10-26 21:58:44,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 21:58:44,138 INFO L276 IsEmpty]: Start isEmpty. Operand 21866 states and 24605 transitions. [2018-10-26 21:58:44,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-10-26 21:58:44,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:58:44,157 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, 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, 3, 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] [2018-10-26 21:58:44,157 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:58:44,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:58:44,158 INFO L82 PathProgramCache]: Analyzing trace with hash 435632359, now seen corresponding path program 1 times [2018-10-26 21:58:44,158 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:58:44,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:58:44,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:44,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:58:44,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:58:44,888 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-26 21:58:44,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:58:44,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:58:44,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:58:44,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:58:44,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:58:44,890 INFO L87 Difference]: Start difference. First operand 21866 states and 24605 transitions. Second operand 4 states. [2018-10-26 21:58:50,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:58:50,148 INFO L93 Difference]: Finished difference Result 53570 states and 60381 transitions. [2018-10-26 21:58:50,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:58:50,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 491 [2018-10-26 21:58:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:58:50,216 INFO L225 Difference]: With dead ends: 53570 [2018-10-26 21:58:50,216 INFO L226 Difference]: Without dead ends: 32558 [2018-10-26 21:58:50,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:58:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32558 states. [2018-10-26 21:58:50,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32558 to 19724. [2018-10-26 21:58:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19724 states. [2018-10-26 21:58:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19724 states to 19724 states and 22070 transitions. [2018-10-26 21:58:50,524 INFO L78 Accepts]: Start accepts. Automaton has 19724 states and 22070 transitions. Word has length 491 [2018-10-26 21:58:50,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:58:50,525 INFO L481 AbstractCegarLoop]: Abstraction has 19724 states and 22070 transitions. [2018-10-26 21:58:50,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:58:50,525 INFO L276 IsEmpty]: Start isEmpty. Operand 19724 states and 22070 transitions. [2018-10-26 21:58:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-10-26 21:58:50,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:58:50,536 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:58:50,536 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:58:50,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:58:50,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1531410331, now seen corresponding path program 1 times [2018-10-26 21:58:50,537 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:58:50,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:58:50,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:50,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:58:50,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:58:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:58:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 171 proven. 480 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-26 21:58:51,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:58:51,838 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:58:51,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:58:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:58:51,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:58:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 503 proven. 149 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-26 21:58:52,846 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:58:52,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-26 21:58:52,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:58:52,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:58:52,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:58:52,848 INFO L87 Difference]: Start difference. First operand 19724 states and 22070 transitions. Second operand 8 states. [2018-10-26 21:59:02,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:59:02,861 INFO L93 Difference]: Finished difference Result 51833 states and 57617 transitions. [2018-10-26 21:59:02,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:59:02,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 536 [2018-10-26 21:59:02,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:59:02,901 INFO L225 Difference]: With dead ends: 51833 [2018-10-26 21:59:02,901 INFO L226 Difference]: Without dead ends: 32963 [2018-10-26 21:59:02,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 534 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:59:02,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32963 states. [2018-10-26 21:59:03,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32963 to 21847. [2018-10-26 21:59:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21847 states. [2018-10-26 21:59:03,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21847 states to 21847 states and 24100 transitions. [2018-10-26 21:59:03,235 INFO L78 Accepts]: Start accepts. Automaton has 21847 states and 24100 transitions. Word has length 536 [2018-10-26 21:59:03,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:59:03,236 INFO L481 AbstractCegarLoop]: Abstraction has 21847 states and 24100 transitions. [2018-10-26 21:59:03,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:59:03,236 INFO L276 IsEmpty]: Start isEmpty. Operand 21847 states and 24100 transitions. [2018-10-26 21:59:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2018-10-26 21:59:03,248 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:59:03,248 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:59:03,248 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:59:03,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:59:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1531969789, now seen corresponding path program 1 times [2018-10-26 21:59:03,249 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:59:03,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:59:03,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:03,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:59:03,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:59:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-26 21:59:03,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:59:03,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:59:03,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:59:03,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:59:03,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:59:03,713 INFO L87 Difference]: Start difference. First operand 21847 states and 24100 transitions. Second operand 4 states. [2018-10-26 21:59:12,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:59:12,467 INFO L93 Difference]: Finished difference Result 49670 states and 54776 transitions. [2018-10-26 21:59:12,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:59:12,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 545 [2018-10-26 21:59:12,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:59:12,496 INFO L225 Difference]: With dead ends: 49670 [2018-10-26 21:59:12,497 INFO L226 Difference]: Without dead ends: 28677 [2018-10-26 21:59:12,511 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 [2018-10-26 21:59:12,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28677 states. [2018-10-26 21:59:12,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28677 to 24827. [2018-10-26 21:59:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24827 states. [2018-10-26 21:59:12,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24827 states to 24827 states and 27174 transitions. [2018-10-26 21:59:12,772 INFO L78 Accepts]: Start accepts. Automaton has 24827 states and 27174 transitions. Word has length 545 [2018-10-26 21:59:12,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:59:12,773 INFO L481 AbstractCegarLoop]: Abstraction has 24827 states and 27174 transitions. [2018-10-26 21:59:12,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:59:12,773 INFO L276 IsEmpty]: Start isEmpty. Operand 24827 states and 27174 transitions. [2018-10-26 21:59:12,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-10-26 21:59:12,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:59:12,786 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:59:12,786 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:59:12,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:59:12,787 INFO L82 PathProgramCache]: Analyzing trace with hash 817002961, now seen corresponding path program 1 times [2018-10-26 21:59:12,787 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:59:12,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:59:12,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:12,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:59:12,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:59:13,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 559 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-26 21:59:13,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:59:13,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:59:13,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:59:13,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:59:13,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:59:13,193 INFO L87 Difference]: Start difference. First operand 24827 states and 27174 transitions. Second operand 5 states. [2018-10-26 21:59:22,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:59:22,890 INFO L93 Difference]: Finished difference Result 62457 states and 68439 transitions. [2018-10-26 21:59:22,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:59:22,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 553 [2018-10-26 21:59:22,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:59:22,936 INFO L225 Difference]: With dead ends: 62457 [2018-10-26 21:59:22,936 INFO L226 Difference]: Without dead ends: 37206 [2018-10-26 21:59:22,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:59:22,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37206 states. [2018-10-26 21:59:23,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37206 to 35926. [2018-10-26 21:59:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35926 states. [2018-10-26 21:59:23,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35926 states to 35926 states and 39130 transitions. [2018-10-26 21:59:23,769 INFO L78 Accepts]: Start accepts. Automaton has 35926 states and 39130 transitions. Word has length 553 [2018-10-26 21:59:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:59:23,770 INFO L481 AbstractCegarLoop]: Abstraction has 35926 states and 39130 transitions. [2018-10-26 21:59:23,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:59:23,770 INFO L276 IsEmpty]: Start isEmpty. Operand 35926 states and 39130 transitions. [2018-10-26 21:59:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2018-10-26 21:59:23,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:59:23,783 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, 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, 4, 4, 4, 3, 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] [2018-10-26 21:59:23,784 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:59:23,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:59:23,784 INFO L82 PathProgramCache]: Analyzing trace with hash -166352926, now seen corresponding path program 1 times [2018-10-26 21:59:23,784 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:59:23,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:59:23,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:23,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:59:23,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:59:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 521 proven. 404 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-10-26 21:59:24,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:59:24,867 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 [2018-10-26 21:59:24,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:59:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:59:25,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:59:25,244 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 17 [2018-10-26 21:59:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 564 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2018-10-26 21:59:26,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:59:26,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 21:59:26,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:59:26,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:59:26,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:59:26,178 INFO L87 Difference]: Start difference. First operand 35926 states and 39130 transitions. Second operand 7 states. [2018-10-26 21:59:36,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:59:36,508 INFO L93 Difference]: Finished difference Result 92359 states and 100802 transitions. [2018-10-26 21:59:36,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:59:36,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 571 [2018-10-26 21:59:36,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:59:36,566 INFO L225 Difference]: With dead ends: 92359 [2018-10-26 21:59:36,566 INFO L226 Difference]: Without dead ends: 57286 [2018-10-26 21:59:36,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 570 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:59:36,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57286 states. [2018-10-26 21:59:37,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57286 to 50430. [2018-10-26 21:59:37,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50430 states. [2018-10-26 21:59:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50430 states to 50430 states and 53966 transitions. [2018-10-26 21:59:37,115 INFO L78 Accepts]: Start accepts. Automaton has 50430 states and 53966 transitions. Word has length 571 [2018-10-26 21:59:37,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:59:37,116 INFO L481 AbstractCegarLoop]: Abstraction has 50430 states and 53966 transitions. [2018-10-26 21:59:37,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:59:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand 50430 states and 53966 transitions. [2018-10-26 21:59:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2018-10-26 21:59:37,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:59:37,130 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, 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, 4, 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] [2018-10-26 21:59:37,130 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:59:37,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:59:37,130 INFO L82 PathProgramCache]: Analyzing trace with hash -315031014, now seen corresponding path program 1 times [2018-10-26 21:59:37,130 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:59:37,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:59:37,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:37,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:59:37,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:59:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:59:37,807 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-26 21:59:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 547 proven. 501 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-26 21:59:38,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:59:38,402 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 [2018-10-26 21:59:38,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:59:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:59:38,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:59:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 545 proven. 293 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-26 21:59:40,224 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:59:40,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 11 [2018-10-26 21:59:40,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 21:59:40,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 21:59:40,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-10-26 21:59:40,226 INFO L87 Difference]: Start difference. First operand 50430 states and 53966 transitions. Second operand 11 states. [2018-10-26 22:00:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:00:05,200 INFO L93 Difference]: Finished difference Result 114004 states and 121686 transitions. [2018-10-26 22:00:05,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-26 22:00:05,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 597 [2018-10-26 22:00:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:00:05,251 INFO L225 Difference]: With dead ends: 114004 [2018-10-26 22:00:05,251 INFO L226 Difference]: Without dead ends: 64428 [2018-10-26 22:00:05,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 603 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2018-10-26 22:00:05,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64428 states. [2018-10-26 22:00:05,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64428 to 51283. [2018-10-26 22:00:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51283 states. [2018-10-26 22:00:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51283 states to 51283 states and 54837 transitions. [2018-10-26 22:00:05,746 INFO L78 Accepts]: Start accepts. Automaton has 51283 states and 54837 transitions. Word has length 597 [2018-10-26 22:00:05,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:00:05,746 INFO L481 AbstractCegarLoop]: Abstraction has 51283 states and 54837 transitions. [2018-10-26 22:00:05,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 22:00:05,746 INFO L276 IsEmpty]: Start isEmpty. Operand 51283 states and 54837 transitions. [2018-10-26 22:00:05,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2018-10-26 22:00:05,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:00:05,755 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:00:05,755 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:00:05,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:00:05,755 INFO L82 PathProgramCache]: Analyzing trace with hash -199105205, now seen corresponding path program 1 times [2018-10-26 22:00:05,755 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:00:05,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:00:05,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:05,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:00:05,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:00:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1132 backedges. 571 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2018-10-26 22:00:06,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:00:06,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:00:06,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:00:06,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:00:06,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:00:06,295 INFO L87 Difference]: Start difference. First operand 51283 states and 54837 transitions. Second operand 3 states. [2018-10-26 22:00:08,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:00:08,059 INFO L93 Difference]: Finished difference Result 98720 states and 105660 transitions. [2018-10-26 22:00:08,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:00:08,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 610 [2018-10-26 22:00:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:00:08,108 INFO L225 Difference]: With dead ends: 98720 [2018-10-26 22:00:08,108 INFO L226 Difference]: Without dead ends: 49995 [2018-10-26 22:00:08,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:00:08,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49995 states. [2018-10-26 22:00:08,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49995 to 47010. [2018-10-26 22:00:08,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47010 states. [2018-10-26 22:00:08,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47010 states to 47010 states and 50365 transitions. [2018-10-26 22:00:08,604 INFO L78 Accepts]: Start accepts. Automaton has 47010 states and 50365 transitions. Word has length 610 [2018-10-26 22:00:08,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:00:08,604 INFO L481 AbstractCegarLoop]: Abstraction has 47010 states and 50365 transitions. [2018-10-26 22:00:08,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:00:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 47010 states and 50365 transitions. [2018-10-26 22:00:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2018-10-26 22:00:08,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:00:08,615 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:00:08,615 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:00:08,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:00:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1072770807, now seen corresponding path program 1 times [2018-10-26 22:00:08,616 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:00:08,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:00:08,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:08,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:00:08,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:00:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1132 backedges. 614 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2018-10-26 22:00:09,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:00:09,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:00:09,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:00:09,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:00:09,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:00:09,814 INFO L87 Difference]: Start difference. First operand 47010 states and 50365 transitions. Second operand 5 states. [2018-10-26 22:00:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:00:20,073 INFO L93 Difference]: Finished difference Result 103400 states and 110775 transitions. [2018-10-26 22:00:20,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:00:20,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 610 [2018-10-26 22:00:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:00:20,137 INFO L225 Difference]: With dead ends: 103400 [2018-10-26 22:00:20,137 INFO L226 Difference]: Without dead ends: 60658 [2018-10-26 22:00:20,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:00:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60658 states. [2018-10-26 22:00:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60658 to 47434. [2018-10-26 22:00:20,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47434 states. [2018-10-26 22:00:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47434 states to 47434 states and 50770 transitions. [2018-10-26 22:00:20,691 INFO L78 Accepts]: Start accepts. Automaton has 47434 states and 50770 transitions. Word has length 610 [2018-10-26 22:00:20,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:00:20,692 INFO L481 AbstractCegarLoop]: Abstraction has 47434 states and 50770 transitions. [2018-10-26 22:00:20,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:00:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 47434 states and 50770 transitions. [2018-10-26 22:00:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2018-10-26 22:00:20,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:00:20,702 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:00:20,702 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:00:20,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:00:20,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1476758056, now seen corresponding path program 1 times [2018-10-26 22:00:20,703 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:00:20,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:00:20,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:20,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:00:20,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:00:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 176 proven. 584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:00:21,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:00:21,677 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:00:21,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:00:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:00:22,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:00:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-26 22:00:22,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:00:22,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-26 22:00:22,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 22:00:22,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 22:00:22,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:00:22,853 INFO L87 Difference]: Start difference. First operand 47434 states and 50770 transitions. Second operand 8 states. [2018-10-26 22:00:34,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:00:34,763 INFO L93 Difference]: Finished difference Result 131975 states and 140449 transitions. [2018-10-26 22:00:34,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 22:00:34,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 629 [2018-10-26 22:00:34,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:00:34,850 INFO L225 Difference]: With dead ends: 131975 [2018-10-26 22:00:34,851 INFO L226 Difference]: Without dead ends: 84968 [2018-10-26 22:00:34,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:00:34,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84968 states. [2018-10-26 22:00:36,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84968 to 63162. [2018-10-26 22:00:36,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63162 states. [2018-10-26 22:00:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63162 states to 63162 states and 66771 transitions. [2018-10-26 22:00:36,119 INFO L78 Accepts]: Start accepts. Automaton has 63162 states and 66771 transitions. Word has length 629 [2018-10-26 22:00:36,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:00:36,119 INFO L481 AbstractCegarLoop]: Abstraction has 63162 states and 66771 transitions. [2018-10-26 22:00:36,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 22:00:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 63162 states and 66771 transitions. [2018-10-26 22:00:36,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2018-10-26 22:00:36,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:00:36,135 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:00:36,135 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:00:36,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:00:36,135 INFO L82 PathProgramCache]: Analyzing trace with hash 2181000, now seen corresponding path program 1 times [2018-10-26 22:00:36,135 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:00:36,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:00:36,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:36,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:00:36,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:00:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 683 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-10-26 22:00:37,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:00:37,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:00:37,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:00:37,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:00:37,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:00:37,121 INFO L87 Difference]: Start difference. First operand 63162 states and 66771 transitions. Second operand 4 states. [2018-10-26 22:00:41,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:00:41,631 INFO L93 Difference]: Finished difference Result 124628 states and 131810 transitions. [2018-10-26 22:00:41,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:00:41,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 697 [2018-10-26 22:00:41,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:00:41,697 INFO L225 Difference]: With dead ends: 124628 [2018-10-26 22:00:41,698 INFO L226 Difference]: Without dead ends: 62320 [2018-10-26 22:00:41,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:00:41,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62320 states. [2018-10-26 22:00:42,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62320 to 58896. [2018-10-26 22:00:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58896 states. [2018-10-26 22:00:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58896 states to 58896 states and 61907 transitions. [2018-10-26 22:00:42,885 INFO L78 Accepts]: Start accepts. Automaton has 58896 states and 61907 transitions. Word has length 697 [2018-10-26 22:00:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:00:42,886 INFO L481 AbstractCegarLoop]: Abstraction has 58896 states and 61907 transitions. [2018-10-26 22:00:42,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:00:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 58896 states and 61907 transitions. [2018-10-26 22:00:42,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2018-10-26 22:00:42,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:00:42,898 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:00:42,898 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:00:42,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:00:42,899 INFO L82 PathProgramCache]: Analyzing trace with hash -348548639, now seen corresponding path program 1 times [2018-10-26 22:00:42,899 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:00:42,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:00:42,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:42,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:00:42,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:00:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:00:43,810 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-26 22:00:44,200 WARN L179 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-10-26 22:00:44,397 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2018-10-26 22:00:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 645 proven. 526 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-26 22:00:45,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:00:45,330 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:00:45,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:00:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:00:45,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-26 22:00:47,878 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-26 22:00:48,080 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:00:48,080 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:00:48,086 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:00:48,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:00:48 BoogieIcfgContainer [2018-10-26 22:00:48,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:00:48,088 INFO L168 Benchmark]: Toolchain (without parser) took 233229.54 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -44.5 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-26 22:00:48,089 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:00:48,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1601.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-26 22:00:48,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 541.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -882.8 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2018-10-26 22:00:48,094 INFO L168 Benchmark]: Boogie Preprocessor took 320.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:00:48,095 INFO L168 Benchmark]: RCFGBuilder took 9999.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 476.7 MB). Peak memory consumption was 476.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:00:48,096 INFO L168 Benchmark]: TraceAbstraction took 220759.00 ms. Allocated memory was 2.3 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 1.4 GB in the end (delta: 181.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-26 22:00:48,102 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1601.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 541.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -882.8 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 320.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9999.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 476.7 MB). Peak memory consumption was 476.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220759.00 ms. Allocated memory was 2.3 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 1.4 GB in the end (delta: 181.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 140). Cancelled while BasicCegarLoop was analyzing trace of length 718 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 220.6s OverallTime, 17 OverallIterations, 6 TraceHistogramMax, 188.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5029 SDtfs, 33269 SDslu, 3237 SDs, 0 SdLazy, 72869 SolverSat, 9319 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 164.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3344 GetRequests, 3241 SyntacticMatches, 18 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63162occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 97077 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 10390 NumberOfCodeBlocks, 10390 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 10367 ConstructedInterpolants, 728 QuantifiedInterpolants, 25208079 SizeOfPredicates, 5 NumberOfNonLiveVariables, 4152 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 23 InterpolantComputations, 11 PerfectInterpolantSequences, 12920/15720 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown