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/Problem14_label53_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:31:18,844 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:31:18,846 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:31:18,866 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:31:18,866 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:31:18,868 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:31:18,869 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:31:18,871 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:31:18,873 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:31:18,874 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:31:18,875 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:31:18,875 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:31:18,876 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:31:18,877 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:31:18,878 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:31:18,879 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:31:18,880 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:31:18,882 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:31:18,883 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:31:18,885 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:31:18,886 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:31:18,887 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:31:18,890 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:31:18,898 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:31:18,913 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:31:18,914 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:31:18,915 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:31:18,916 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:31:18,916 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:31:18,917 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:31:18,917 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:31:18,917 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:31:18,917 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:31:18,917 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:31:18,918 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:31:18,919 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:31:18,919 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:31:18,919 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:31:18,919 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:31:18,920 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:31:18,920 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:31:18,920 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:31:18,920 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:31:18,920 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:31:18,921 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:31:18,922 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:31:18,922 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:31:18,922 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:31:18,923 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:31:18,923 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:31:18,923 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:31:18,923 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:31:18,986 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:31:19,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:31:19,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:31:19,015 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:31:19,015 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:31:19,016 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c [2018-10-24 16:31:19,075 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1e1c9cd41/da16def1128c465db39ab11d9d4519f8/FLAG80f358171 [2018-10-24 16:31:19,644 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:31:19,645 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c [2018-10-24 16:31:19,666 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1e1c9cd41/da16def1128c465db39ab11d9d4519f8/FLAG80f358171 [2018-10-24 16:31:19,681 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1e1c9cd41/da16def1128c465db39ab11d9d4519f8 [2018-10-24 16:31:19,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:31:19,694 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:31:19,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:31:19,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:31:19,699 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:31:19,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:31:19" (1/1) ... [2018-10-24 16:31:19,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206c1d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:19, skipping insertion in model container [2018-10-24 16:31:19,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:31:19" (1/1) ... [2018-10-24 16:31:19,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:31:19,794 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:31:20,335 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:31:20,339 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:31:20,516 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:31:20,555 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:31:20,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:20 WrapperNode [2018-10-24 16:31:20,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:31:20,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:31:20,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:31:20,559 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:31:20,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:20" (1/1) ... [2018-10-24 16:31:20,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:20" (1/1) ... [2018-10-24 16:31:20,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:31:20,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:31:20,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:31:20,786 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:31:20,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:20" (1/1) ... [2018-10-24 16:31:20,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:20" (1/1) ... [2018-10-24 16:31:20,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:20" (1/1) ... [2018-10-24 16:31:20,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:20" (1/1) ... [2018-10-24 16:31:20,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:20" (1/1) ... [2018-10-24 16:31:20,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:20" (1/1) ... [2018-10-24 16:31:20,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:20" (1/1) ... [2018-10-24 16:31:20,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:31:20,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:31:20,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:31:20,895 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:31:20,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:31:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:31:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:31:20,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:31:24,843 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:31:24,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:31:24 BoogieIcfgContainer [2018-10-24 16:31:24,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:31:24,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:31:24,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:31:24,851 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:31:24,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:31:19" (1/3) ... [2018-10-24 16:31:24,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c82fca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:31:24, skipping insertion in model container [2018-10-24 16:31:24,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:20" (2/3) ... [2018-10-24 16:31:24,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c82fca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:31:24, skipping insertion in model container [2018-10-24 16:31:24,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:31:24" (3/3) ... [2018-10-24 16:31:24,858 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label53_true-unreach-call_false-termination.c [2018-10-24 16:31:24,869 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:31:24,887 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:31:24,902 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:31:24,939 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:31:24,940 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:31:24,940 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:31:24,940 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:31:24,941 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:31:24,941 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:31:24,941 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:31:24,941 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:31:24,941 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:31:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states. [2018-10-24 16:31:24,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-24 16:31:24,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:24,979 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, 1, 1, 1, 1, 1] [2018-10-24 16:31:24,985 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:24,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:24,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1705034714, now seen corresponding path program 1 times [2018-10-24 16:31:24,998 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:24,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:25,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:25,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:25,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:31:25,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:25,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:31:25,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:31:25,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:31:25,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:25,485 INFO L87 Difference]: Start difference. First operand 246 states. Second operand 4 states. [2018-10-24 16:31:28,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:28,311 INFO L93 Difference]: Finished difference Result 870 states and 1578 transitions. [2018-10-24 16:31:28,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:31:28,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-10-24 16:31:28,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:28,337 INFO L225 Difference]: With dead ends: 870 [2018-10-24 16:31:28,337 INFO L226 Difference]: Without dead ends: 617 [2018-10-24 16:31:28,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:28,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2018-10-24 16:31:28,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2018-10-24 16:31:28,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2018-10-24 16:31:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 940 transitions. [2018-10-24 16:31:28,426 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 940 transitions. Word has length 50 [2018-10-24 16:31:28,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:28,426 INFO L481 AbstractCegarLoop]: Abstraction has 617 states and 940 transitions. [2018-10-24 16:31:28,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:31:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 940 transitions. [2018-10-24 16:31:28,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-24 16:31:28,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:28,436 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, 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] [2018-10-24 16:31:28,437 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:28,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:28,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1356226657, now seen corresponding path program 1 times [2018-10-24 16:31:28,437 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:28,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:28,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:28,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:28,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:29,172 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 12 [2018-10-24 16:31:29,485 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2018-10-24 16:31:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:31:29,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:29,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:31:29,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:31:29,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:31:29,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:31:29,657 INFO L87 Difference]: Start difference. First operand 617 states and 940 transitions. Second operand 6 states. [2018-10-24 16:31:36,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:36,266 INFO L93 Difference]: Finished difference Result 3026 states and 4618 transitions. [2018-10-24 16:31:36,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:31:36,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2018-10-24 16:31:36,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:36,282 INFO L225 Difference]: With dead ends: 3026 [2018-10-24 16:31:36,282 INFO L226 Difference]: Without dead ends: 2411 [2018-10-24 16:31:36,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:31:36,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2018-10-24 16:31:36,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1870. [2018-10-24 16:31:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1870 states. [2018-10-24 16:31:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2494 transitions. [2018-10-24 16:31:36,356 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2494 transitions. Word has length 159 [2018-10-24 16:31:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:36,357 INFO L481 AbstractCegarLoop]: Abstraction has 1870 states and 2494 transitions. [2018-10-24 16:31:36,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:31:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2494 transitions. [2018-10-24 16:31:36,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-24 16:31:36,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:36,363 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:36,363 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:36,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:36,363 INFO L82 PathProgramCache]: Analyzing trace with hash 156167985, now seen corresponding path program 1 times [2018-10-24 16:31:36,364 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:36,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:36,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:36,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:36,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-24 16:31:36,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:36,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:31:36,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:31:36,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:31:36,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:36,606 INFO L87 Difference]: Start difference. First operand 1870 states and 2494 transitions. Second operand 4 states. [2018-10-24 16:31:39,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:39,733 INFO L93 Difference]: Finished difference Result 5170 states and 7227 transitions. [2018-10-24 16:31:39,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:31:39,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 226 [2018-10-24 16:31:39,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:39,750 INFO L225 Difference]: With dead ends: 5170 [2018-10-24 16:31:39,750 INFO L226 Difference]: Without dead ends: 3302 [2018-10-24 16:31:39,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:39,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2018-10-24 16:31:39,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 3302. [2018-10-24 16:31:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3302 states. [2018-10-24 16:31:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 4301 transitions. [2018-10-24 16:31:39,820 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 4301 transitions. Word has length 226 [2018-10-24 16:31:39,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:39,821 INFO L481 AbstractCegarLoop]: Abstraction has 3302 states and 4301 transitions. [2018-10-24 16:31:39,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:31:39,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 4301 transitions. [2018-10-24 16:31:39,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-24 16:31:39,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:39,827 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:39,827 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:39,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:39,828 INFO L82 PathProgramCache]: Analyzing trace with hash 976070452, now seen corresponding path program 1 times [2018-10-24 16:31:39,828 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:39,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:39,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:39,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:39,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:40,129 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 152 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 16:31:40,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:31:40,130 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:31:40,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:40,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:31:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 16:31:40,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:31:40,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:31:40,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:31:40,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:31:40,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:31:40,389 INFO L87 Difference]: Start difference. First operand 3302 states and 4301 transitions. Second operand 6 states. [2018-10-24 16:31:46,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:46,946 INFO L93 Difference]: Finished difference Result 11476 states and 15022 transitions. [2018-10-24 16:31:46,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:31:46,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 240 [2018-10-24 16:31:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:46,980 INFO L225 Difference]: With dead ends: 11476 [2018-10-24 16:31:46,980 INFO L226 Difference]: Without dead ends: 7605 [2018-10-24 16:31:46,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:31:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2018-10-24 16:31:47,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 5075. [2018-10-24 16:31:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5075 states. [2018-10-24 16:31:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5075 states to 5075 states and 5965 transitions. [2018-10-24 16:31:47,083 INFO L78 Accepts]: Start accepts. Automaton has 5075 states and 5965 transitions. Word has length 240 [2018-10-24 16:31:47,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:47,084 INFO L481 AbstractCegarLoop]: Abstraction has 5075 states and 5965 transitions. [2018-10-24 16:31:47,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:31:47,084 INFO L276 IsEmpty]: Start isEmpty. Operand 5075 states and 5965 transitions. [2018-10-24 16:31:47,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-10-24 16:31:47,100 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:47,101 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:47,101 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:47,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:47,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1869283549, now seen corresponding path program 1 times [2018-10-24 16:31:47,102 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:47,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:47,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:47,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:47,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:47,721 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-10-24 16:31:48,070 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-24 16:31:48,580 WARN L179 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2018-10-24 16:31:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 556 proven. 46 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2018-10-24 16:31:49,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:31:49,147 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:31:49,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:49,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:31:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 579 proven. 23 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2018-10-24 16:31:49,954 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:31:49,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-24 16:31:49,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:31:49,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:31:49,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:31:49,956 INFO L87 Difference]: Start difference. First operand 5075 states and 5965 transitions. Second operand 9 states. [2018-10-24 16:31:55,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:55,952 INFO L93 Difference]: Finished difference Result 10411 states and 12198 transitions. [2018-10-24 16:31:55,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 16:31:55,952 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 546 [2018-10-24 16:31:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:55,975 INFO L225 Difference]: With dead ends: 10411 [2018-10-24 16:31:55,975 INFO L226 Difference]: Without dead ends: 5517 [2018-10-24 16:31:55,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 544 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:31:55,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2018-10-24 16:31:56,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5254. [2018-10-24 16:31:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5254 states. [2018-10-24 16:31:56,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 6144 transitions. [2018-10-24 16:31:56,080 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 6144 transitions. Word has length 546 [2018-10-24 16:31:56,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:56,081 INFO L481 AbstractCegarLoop]: Abstraction has 5254 states and 6144 transitions. [2018-10-24 16:31:56,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:31:56,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 6144 transitions. [2018-10-24 16:31:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2018-10-24 16:31:56,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:56,104 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:56,104 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:56,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:56,105 INFO L82 PathProgramCache]: Analyzing trace with hash 858768957, now seen corresponding path program 1 times [2018-10-24 16:31:56,105 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:56,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:56,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:56,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:56,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 1040 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-24 16:31:56,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:56,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:31:56,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:31:56,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:31:56,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:56,722 INFO L87 Difference]: Start difference. First operand 5254 states and 6144 transitions. Second operand 4 states. [2018-10-24 16:31:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:57,933 INFO L93 Difference]: Finished difference Result 12833 states and 15192 transitions. [2018-10-24 16:31:57,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:31:57,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 603 [2018-10-24 16:31:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:57,962 INFO L225 Difference]: With dead ends: 12833 [2018-10-24 16:31:57,962 INFO L226 Difference]: Without dead ends: 7760 [2018-10-24 16:31:57,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:57,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7760 states. [2018-10-24 16:31:58,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7760 to 7760. [2018-10-24 16:31:58,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7760 states. [2018-10-24 16:31:58,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7760 states to 7760 states and 8862 transitions. [2018-10-24 16:31:58,087 INFO L78 Accepts]: Start accepts. Automaton has 7760 states and 8862 transitions. Word has length 603 [2018-10-24 16:31:58,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:58,088 INFO L481 AbstractCegarLoop]: Abstraction has 7760 states and 8862 transitions. [2018-10-24 16:31:58,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:31:58,088 INFO L276 IsEmpty]: Start isEmpty. Operand 7760 states and 8862 transitions. [2018-10-24 16:31:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2018-10-24 16:31:58,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:58,114 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:58,114 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:58,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:58,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1547299867, now seen corresponding path program 1 times [2018-10-24 16:31:58,115 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:58,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:58,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:58,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:58,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:58,644 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-24 16:31:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1546 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2018-10-24 16:31:59,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:59,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:31:59,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:31:59,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:31:59,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:31:59,066 INFO L87 Difference]: Start difference. First operand 7760 states and 8862 transitions. Second operand 3 states. [2018-10-24 16:32:00,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:00,167 INFO L93 Difference]: Finished difference Result 16055 states and 18466 transitions. [2018-10-24 16:32:00,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:32:00,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 717 [2018-10-24 16:32:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:00,189 INFO L225 Difference]: With dead ends: 16055 [2018-10-24 16:32:00,189 INFO L226 Difference]: Without dead ends: 8476 [2018-10-24 16:32:00,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:32:00,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8476 states. [2018-10-24 16:32:00,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8476 to 8476. [2018-10-24 16:32:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8476 states. [2018-10-24 16:32:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 9463 transitions. [2018-10-24 16:32:00,307 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 9463 transitions. Word has length 717 [2018-10-24 16:32:00,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:00,308 INFO L481 AbstractCegarLoop]: Abstraction has 8476 states and 9463 transitions. [2018-10-24 16:32:00,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:32:00,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 9463 transitions. [2018-10-24 16:32:00,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2018-10-24 16:32:00,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:00,326 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:32:00,327 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:00,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:00,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1003385662, now seen corresponding path program 1 times [2018-10-24 16:32:00,327 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:00,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:00,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:00,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:00,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2329 backedges. 1639 proven. 201 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2018-10-24 16:32:02,258 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:32:02,258 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 [2018-10-24 16:32:02,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:02,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:32:03,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2329 backedges. 1546 proven. 93 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2018-10-24 16:32:03,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:32:03,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 8 [2018-10-24 16:32:03,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:32:03,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:32:03,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:32:03,636 INFO L87 Difference]: Start difference. First operand 8476 states and 9463 transitions. Second operand 9 states. [2018-10-24 16:32:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:06,731 INFO L93 Difference]: Finished difference Result 17606 states and 19786 transitions. [2018-10-24 16:32:06,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 16:32:06,731 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 883 [2018-10-24 16:32:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:06,744 INFO L225 Difference]: With dead ends: 17606 [2018-10-24 16:32:06,744 INFO L226 Difference]: Without dead ends: 9311 [2018-10-24 16:32:06,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:32:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9311 states. [2018-10-24 16:32:06,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9311 to 9012. [2018-10-24 16:32:06,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9012 states. [2018-10-24 16:32:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9012 states to 9012 states and 10035 transitions. [2018-10-24 16:32:06,876 INFO L78 Accepts]: Start accepts. Automaton has 9012 states and 10035 transitions. Word has length 883 [2018-10-24 16:32:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:06,877 INFO L481 AbstractCegarLoop]: Abstraction has 9012 states and 10035 transitions. [2018-10-24 16:32:06,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:32:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand 9012 states and 10035 transitions. [2018-10-24 16:32:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2018-10-24 16:32:06,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:06,898 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:06,898 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:06,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:06,899 INFO L82 PathProgramCache]: Analyzing trace with hash -406949178, now seen corresponding path program 1 times [2018-10-24 16:32:06,899 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:06,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:06,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:06,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:06,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:07,895 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 16:32:08,195 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 16:32:08,406 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 16:32:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2598 backedges. 808 proven. 617 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2018-10-24 16:32:09,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:32:09,847 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 [2018-10-24 16:32:09,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:10,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:32:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2598 backedges. 1370 proven. 55 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2018-10-24 16:32:11,865 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:32:11,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2018-10-24 16:32:11,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:32:11,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:32:11,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:32:11,868 INFO L87 Difference]: Start difference. First operand 9012 states and 10035 transitions. Second operand 8 states. [2018-10-24 16:32:15,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:15,036 INFO L93 Difference]: Finished difference Result 20269 states and 22466 transitions. [2018-10-24 16:32:15,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 16:32:15,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 951 [2018-10-24 16:32:15,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:15,054 INFO L225 Difference]: With dead ends: 20269 [2018-10-24 16:32:15,054 INFO L226 Difference]: Without dead ends: 11438 [2018-10-24 16:32:15,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 961 GetRequests, 950 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:32:15,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11438 states. [2018-10-24 16:32:15,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11438 to 9012. [2018-10-24 16:32:15,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9012 states. [2018-10-24 16:32:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9012 states to 9012 states and 10025 transitions. [2018-10-24 16:32:15,232 INFO L78 Accepts]: Start accepts. Automaton has 9012 states and 10025 transitions. Word has length 951 [2018-10-24 16:32:15,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:15,233 INFO L481 AbstractCegarLoop]: Abstraction has 9012 states and 10025 transitions. [2018-10-24 16:32:15,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:32:15,234 INFO L276 IsEmpty]: Start isEmpty. Operand 9012 states and 10025 transitions. [2018-10-24 16:32:15,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2018-10-24 16:32:15,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:15,258 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:15,258 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:15,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:15,259 INFO L82 PathProgramCache]: Analyzing trace with hash -23615872, now seen corresponding path program 1 times [2018-10-24 16:32:15,259 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:15,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:15,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:15,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:15,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:15,900 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 16:32:16,269 WARN L179 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-10-24 16:32:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3033 backedges. 1479 proven. 0 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2018-10-24 16:32:17,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:32:17,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 16:32:17,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:32:17,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:32:17,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:32:17,033 INFO L87 Difference]: Start difference. First operand 9012 states and 10025 transitions. Second operand 7 states. [2018-10-24 16:32:18,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:18,968 INFO L93 Difference]: Finished difference Result 18464 states and 20594 transitions. [2018-10-24 16:32:18,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:32:18,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 954 [2018-10-24 16:32:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:18,982 INFO L225 Difference]: With dead ends: 18464 [2018-10-24 16:32:18,983 INFO L226 Difference]: Without dead ends: 9009 [2018-10-24 16:32:18,992 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:32:18,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9009 states. [2018-10-24 16:32:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9009 to 9009. [2018-10-24 16:32:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9009 states. [2018-10-24 16:32:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9009 states to 9009 states and 9941 transitions. [2018-10-24 16:32:19,104 INFO L78 Accepts]: Start accepts. Automaton has 9009 states and 9941 transitions. Word has length 954 [2018-10-24 16:32:19,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:19,105 INFO L481 AbstractCegarLoop]: Abstraction has 9009 states and 9941 transitions. [2018-10-24 16:32:19,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:32:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 9009 states and 9941 transitions. [2018-10-24 16:32:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2018-10-24 16:32:19,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:19,120 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:32:19,121 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:19,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:19,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1719850170, now seen corresponding path program 1 times [2018-10-24 16:32:19,121 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:19,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:19,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:19,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:19,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 1599 proven. 0 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2018-10-24 16:32:20,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:32:20,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:32:20,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:32:20,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:32:20,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:32:20,045 INFO L87 Difference]: Start difference. First operand 9009 states and 9941 transitions. Second operand 5 states. [2018-10-24 16:32:22,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:22,380 INFO L93 Difference]: Finished difference Result 20368 states and 22523 transitions. [2018-10-24 16:32:22,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:32:22,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 961 [2018-10-24 16:32:22,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:22,396 INFO L225 Difference]: With dead ends: 20368 [2018-10-24 16:32:22,396 INFO L226 Difference]: Without dead ends: 11540 [2018-10-24 16:32:22,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:32:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11540 states. [2018-10-24 16:32:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11540 to 9915. [2018-10-24 16:32:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9915 states. [2018-10-24 16:32:22,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9915 states to 9915 states and 11014 transitions. [2018-10-24 16:32:22,539 INFO L78 Accepts]: Start accepts. Automaton has 9915 states and 11014 transitions. Word has length 961 [2018-10-24 16:32:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:22,540 INFO L481 AbstractCegarLoop]: Abstraction has 9915 states and 11014 transitions. [2018-10-24 16:32:22,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:32:22,540 INFO L276 IsEmpty]: Start isEmpty. Operand 9915 states and 11014 transitions. [2018-10-24 16:32:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2018-10-24 16:32:22,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:22,557 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:22,557 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:22,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:22,558 INFO L82 PathProgramCache]: Analyzing trace with hash 514789948, now seen corresponding path program 1 times [2018-10-24 16:32:22,558 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:22,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:22,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:22,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:22,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:23,434 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 16:32:23,610 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 16:32:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 1113 proven. 323 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2018-10-24 16:32:25,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:32:25,214 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 [2018-10-24 16:32:25,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:25,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:32:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 1429 proven. 7 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2018-10-24 16:32:26,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:32:26,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2018-10-24 16:32:26,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:32:26,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:32:26,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:32:26,746 INFO L87 Difference]: Start difference. First operand 9915 states and 11014 transitions. Second operand 7 states. [2018-10-24 16:32:31,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:31,466 INFO L93 Difference]: Finished difference Result 24270 states and 26671 transitions. [2018-10-24 16:32:31,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 16:32:31,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 962 [2018-10-24 16:32:31,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:31,485 INFO L225 Difference]: With dead ends: 24270 [2018-10-24 16:32:31,485 INFO L226 Difference]: Without dead ends: 14232 [2018-10-24 16:32:31,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 961 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:32:31,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14232 states. [2018-10-24 16:32:31,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14232 to 10161. [2018-10-24 16:32:31,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10161 states. [2018-10-24 16:32:31,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10161 states to 10161 states and 11243 transitions. [2018-10-24 16:32:31,650 INFO L78 Accepts]: Start accepts. Automaton has 10161 states and 11243 transitions. Word has length 962 [2018-10-24 16:32:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:31,651 INFO L481 AbstractCegarLoop]: Abstraction has 10161 states and 11243 transitions. [2018-10-24 16:32:31,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:32:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 10161 states and 11243 transitions. [2018-10-24 16:32:31,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2018-10-24 16:32:31,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:31,673 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:32:31,673 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:31,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:31,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1123744733, now seen corresponding path program 1 times [2018-10-24 16:32:31,674 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:31,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:31,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:31,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:31,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:32,507 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 16:32:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3738 backedges. 1079 proven. 0 refuted. 0 times theorem prover too weak. 2659 trivial. 0 not checked. [2018-10-24 16:32:32,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:32:32,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:32:32,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:32:32,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:32:32,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:32,899 INFO L87 Difference]: Start difference. First operand 10161 states and 11243 transitions. Second operand 4 states. [2018-10-24 16:32:36,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:36,787 INFO L93 Difference]: Finished difference Result 21027 states and 23348 transitions. [2018-10-24 16:32:36,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:32:36,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1070 [2018-10-24 16:32:36,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:36,800 INFO L225 Difference]: With dead ends: 21027 [2018-10-24 16:32:36,800 INFO L226 Difference]: Without dead ends: 11047 [2018-10-24 16:32:36,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11047 states. [2018-10-24 16:32:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11047 to 10809. [2018-10-24 16:32:36,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10809 states. [2018-10-24 16:32:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10809 states to 10809 states and 11642 transitions. [2018-10-24 16:32:36,945 INFO L78 Accepts]: Start accepts. Automaton has 10809 states and 11642 transitions. Word has length 1070 [2018-10-24 16:32:36,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:36,946 INFO L481 AbstractCegarLoop]: Abstraction has 10809 states and 11642 transitions. [2018-10-24 16:32:36,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:32:36,946 INFO L276 IsEmpty]: Start isEmpty. Operand 10809 states and 11642 transitions. [2018-10-24 16:32:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2018-10-24 16:32:36,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:36,964 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:36,964 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:36,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:36,965 INFO L82 PathProgramCache]: Analyzing trace with hash 574050992, now seen corresponding path program 1 times [2018-10-24 16:32:36,965 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:36,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:36,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:36,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:36,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3779 backedges. 1762 proven. 0 refuted. 0 times theorem prover too weak. 2017 trivial. 0 not checked. [2018-10-24 16:32:38,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:32:38,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:32:38,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:32:38,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:32:38,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:32:38,193 INFO L87 Difference]: Start difference. First operand 10809 states and 11642 transitions. Second operand 5 states. [2018-10-24 16:32:40,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:40,027 INFO L93 Difference]: Finished difference Result 20350 states and 21934 transitions. [2018-10-24 16:32:40,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:32:40,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1088 [2018-10-24 16:32:40,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:40,036 INFO L225 Difference]: With dead ends: 20350 [2018-10-24 16:32:40,037 INFO L226 Difference]: Without dead ends: 9722 [2018-10-24 16:32:40,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:32:40,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9722 states. [2018-10-24 16:32:40,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9722 to 9722. [2018-10-24 16:32:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9722 states. [2018-10-24 16:32:40,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9722 states to 9722 states and 10203 transitions. [2018-10-24 16:32:40,150 INFO L78 Accepts]: Start accepts. Automaton has 9722 states and 10203 transitions. Word has length 1088 [2018-10-24 16:32:40,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:40,151 INFO L481 AbstractCegarLoop]: Abstraction has 9722 states and 10203 transitions. [2018-10-24 16:32:40,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:32:40,151 INFO L276 IsEmpty]: Start isEmpty. Operand 9722 states and 10203 transitions. [2018-10-24 16:32:40,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1521 [2018-10-24 16:32:40,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:40,170 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:40,171 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:40,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:40,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1168062938, now seen corresponding path program 1 times [2018-10-24 16:32:40,171 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:40,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:40,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:40,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:40,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7278 backedges. 575 proven. 0 refuted. 0 times theorem prover too weak. 6703 trivial. 0 not checked. [2018-10-24 16:32:41,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:32:41,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:32:41,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:32:41,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:32:41,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:41,990 INFO L87 Difference]: Start difference. First operand 9722 states and 10203 transitions. Second operand 4 states. [2018-10-24 16:32:43,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:43,126 INFO L93 Difference]: Finished difference Result 22660 states and 23772 transitions. [2018-10-24 16:32:43,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:32:43,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1520 [2018-10-24 16:32:43,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:43,136 INFO L225 Difference]: With dead ends: 22660 [2018-10-24 16:32:43,137 INFO L226 Difference]: Without dead ends: 11859 [2018-10-24 16:32:43,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:43,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11859 states. [2018-10-24 16:32:43,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11859 to 11679. [2018-10-24 16:32:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11679 states. [2018-10-24 16:32:43,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11679 states to 11679 states and 12120 transitions. [2018-10-24 16:32:43,269 INFO L78 Accepts]: Start accepts. Automaton has 11679 states and 12120 transitions. Word has length 1520 [2018-10-24 16:32:43,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:43,270 INFO L481 AbstractCegarLoop]: Abstraction has 11679 states and 12120 transitions. [2018-10-24 16:32:43,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:32:43,270 INFO L276 IsEmpty]: Start isEmpty. Operand 11679 states and 12120 transitions. [2018-10-24 16:32:43,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1677 [2018-10-24 16:32:43,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:43,297 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:43,297 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:43,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:43,298 INFO L82 PathProgramCache]: Analyzing trace with hash 487171339, now seen corresponding path program 1 times [2018-10-24 16:32:43,298 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:43,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:43,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:43,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:43,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8598 backedges. 2918 proven. 0 refuted. 0 times theorem prover too weak. 5680 trivial. 0 not checked. [2018-10-24 16:32:45,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:32:45,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:32:45,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:32:45,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:32:45,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:45,153 INFO L87 Difference]: Start difference. First operand 11679 states and 12120 transitions. Second operand 4 states. [2018-10-24 16:32:46,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:46,324 INFO L93 Difference]: Finished difference Result 22278 states and 23135 transitions. [2018-10-24 16:32:46,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:32:46,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1676 [2018-10-24 16:32:46,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:46,329 INFO L225 Difference]: With dead ends: 22278 [2018-10-24 16:32:46,329 INFO L226 Difference]: Without dead ends: 5202 [2018-10-24 16:32:46,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:46,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5202 states. [2018-10-24 16:32:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5202 to 4843. [2018-10-24 16:32:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4843 states. [2018-10-24 16:32:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 4942 transitions. [2018-10-24 16:32:46,389 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 4942 transitions. Word has length 1676 [2018-10-24 16:32:46,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:46,390 INFO L481 AbstractCegarLoop]: Abstraction has 4843 states and 4942 transitions. [2018-10-24 16:32:46,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:32:46,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 4942 transitions. [2018-10-24 16:32:46,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1749 [2018-10-24 16:32:46,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:46,406 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:46,406 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:46,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:46,407 INFO L82 PathProgramCache]: Analyzing trace with hash -126785660, now seen corresponding path program 1 times [2018-10-24 16:32:46,407 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:46,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:46,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:46,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:46,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9888 backedges. 4874 proven. 393 refuted. 0 times theorem prover too weak. 4621 trivial. 0 not checked. [2018-10-24 16:32:48,821 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:32:48,821 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 [2018-10-24 16:32:48,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:49,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:32:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9888 backedges. 2867 proven. 179 refuted. 0 times theorem prover too weak. 6842 trivial. 0 not checked. [2018-10-24 16:32:51,503 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:32:51,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2018-10-24 16:32:51,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 16:32:51,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 16:32:51,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:32:51,507 INFO L87 Difference]: Start difference. First operand 4843 states and 4942 transitions. Second operand 10 states. [2018-10-24 16:33:07,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:33:07,055 INFO L93 Difference]: Finished difference Result 14353 states and 14708 transitions. [2018-10-24 16:33:07,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 16:33:07,055 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1748 [2018-10-24 16:33:07,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:33:07,062 INFO L225 Difference]: With dead ends: 14353 [2018-10-24 16:33:07,062 INFO L226 Difference]: Without dead ends: 7715 [2018-10-24 16:33:07,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1774 GetRequests, 1754 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-10-24 16:33:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7715 states. [2018-10-24 16:33:07,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7715 to 4842. [2018-10-24 16:33:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4842 states. [2018-10-24 16:33:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4842 states to 4842 states and 4918 transitions. [2018-10-24 16:33:07,132 INFO L78 Accepts]: Start accepts. Automaton has 4842 states and 4918 transitions. Word has length 1748 [2018-10-24 16:33:07,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:33:07,133 INFO L481 AbstractCegarLoop]: Abstraction has 4842 states and 4918 transitions. [2018-10-24 16:33:07,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 16:33:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4842 states and 4918 transitions. [2018-10-24 16:33:07,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1920 [2018-10-24 16:33:07,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:33:07,154 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 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] [2018-10-24 16:33:07,154 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:33:07,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:33:07,155 INFO L82 PathProgramCache]: Analyzing trace with hash -813060872, now seen corresponding path program 1 times [2018-10-24 16:33:07,155 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:33:07,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:33:07,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:07,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:07,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:08,206 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 16:33:08,418 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:33:08,647 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 16:33:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 11629 backedges. 3245 proven. 0 refuted. 0 times theorem prover too weak. 8384 trivial. 0 not checked. [2018-10-24 16:33:11,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:33:11,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 16:33:11,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:33:11,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:33:11,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:33:11,045 INFO L87 Difference]: Start difference. First operand 4842 states and 4918 transitions. Second operand 7 states. [2018-10-24 16:33:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:33:12,283 INFO L93 Difference]: Finished difference Result 7205 states and 7335 transitions. [2018-10-24 16:33:12,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:33:12,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1919 [2018-10-24 16:33:12,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:33:12,287 INFO L225 Difference]: With dead ends: 7205 [2018-10-24 16:33:12,287 INFO L226 Difference]: Without dead ends: 4662 [2018-10-24 16:33:12,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:33:12,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4662 states. [2018-10-24 16:33:12,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4662 to 4662. [2018-10-24 16:33:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4662 states. [2018-10-24 16:33:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4662 states to 4662 states and 4725 transitions. [2018-10-24 16:33:12,332 INFO L78 Accepts]: Start accepts. Automaton has 4662 states and 4725 transitions. Word has length 1919 [2018-10-24 16:33:12,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:33:12,333 INFO L481 AbstractCegarLoop]: Abstraction has 4662 states and 4725 transitions. [2018-10-24 16:33:12,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:33:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4662 states and 4725 transitions. [2018-10-24 16:33:12,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2053 [2018-10-24 16:33:12,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:33:12,357 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:33:12,357 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:33:12,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:33:12,358 INFO L82 PathProgramCache]: Analyzing trace with hash -256691129, now seen corresponding path program 1 times [2018-10-24 16:33:12,358 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:33:12,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:33:12,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:12,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:12,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 13345 backedges. 3459 proven. 120 refuted. 0 times theorem prover too weak. 9766 trivial. 0 not checked. [2018-10-24 16:33:15,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:33:15,540 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 [2018-10-24 16:33:15,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:16,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:33:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 13345 backedges. 3483 proven. 96 refuted. 0 times theorem prover too weak. 9766 trivial. 0 not checked. [2018-10-24 16:33:19,287 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:33:19,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2018-10-24 16:33:19,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 16:33:19,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 16:33:19,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:33:19,290 INFO L87 Difference]: Start difference. First operand 4662 states and 4725 transitions. Second operand 10 states. [2018-10-24 16:33:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:33:26,311 INFO L93 Difference]: Finished difference Result 9156 states and 9290 transitions. [2018-10-24 16:33:26,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:33:26,311 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 2052 [2018-10-24 16:33:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:33:26,313 INFO L225 Difference]: With dead ends: 9156 [2018-10-24 16:33:26,313 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 16:33:26,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2066 GetRequests, 2053 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:33:26,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 16:33:26,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 16:33:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 16:33:26,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 16:33:26,316 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2052 [2018-10-24 16:33:26,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:33:26,316 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 16:33:26,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 16:33:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 16:33:26,316 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 16:33:26,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 16:33:26,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:26,408 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:26,500 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:26,527 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:26,528 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:26,590 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:26,610 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:26,623 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:26,677 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:26,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:26,723 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:26,766 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:26,803 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:26,987 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,034 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,123 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,128 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,163 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,226 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,232 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,258 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,271 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,277 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,428 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,431 WARN L179 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 579 DAG size of output: 422 [2018-10-24 16:33:27,471 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,488 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,570 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,592 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,593 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,646 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,673 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,720 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,759 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,795 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,826 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,965 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:27,999 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:28,091 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:28,095 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:28,122 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:28,172 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:28,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:28,196 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:28,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:28,213 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:28,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:33:28,338 WARN L179 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 579 DAG size of output: 422 Received shutdown request... [2018-10-24 16:35:20,689 WARN L187 SmtUtils]: Removed 11 from assertion stack [2018-10-24 16:35:20,690 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-24 16:35:20,691 INFO L168 Benchmark]: Toolchain (without parser) took 240998.04 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 16:35:20,692 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:35:20,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 862.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:20,693 INFO L168 Benchmark]: Boogie Procedure Inliner took 227.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 725.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -821.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:20,694 INFO L168 Benchmark]: Boogie Preprocessor took 108.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:20,694 INFO L168 Benchmark]: RCFGBuilder took 3951.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 120.5 MB). Peak memory consumption was 120.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:20,696 INFO L168 Benchmark]: TraceAbstraction took 235842.85 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -786.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 16:35:20,701 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 862.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 227.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 725.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -821.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3951.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 120.5 MB). Peak memory consumption was 120.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235842.85 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -786.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 151]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 364. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown