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/Problem12_label34_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:03:48,622 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:03:48,624 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:03:48,641 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:03:48,641 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:03:48,642 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:03:48,643 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:03:48,645 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:03:48,647 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:03:48,648 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:03:48,649 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:03:48,649 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:03:48,650 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:03:48,651 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:03:48,652 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:03:48,653 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:03:48,653 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:03:48,655 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:03:48,657 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:03:48,659 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:03:48,660 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:03:48,661 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:03:48,664 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:03:48,664 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:03:48,664 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:03:48,665 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:03:48,666 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:03:48,667 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:03:48,668 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:03:48,669 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:03:48,669 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:03:48,670 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:03:48,672 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 14:03:48,701 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:03:48,701 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:03:48,702 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:03:48,702 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:03:48,703 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:03:48,703 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:03:48,703 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:03:48,704 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:03:48,704 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:03:48,704 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:03:48,704 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:03:48,705 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:03:48,705 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:03:48,705 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:03:48,705 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:03:48,705 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:03:48,705 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:03:48,706 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:03:48,706 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:03:48,706 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:03:48,706 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:03:48,706 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:03:48,707 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:03:48,707 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:03:48,707 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:03:48,707 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:03:48,707 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:03:48,708 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:03:48,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:03:48,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:03:48,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:03:48,781 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:03:48,782 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:03:48,783 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label34_false-unreach-call.c [2018-10-24 14:03:48,846 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e1c2e4e5/219ca0fab597410fa15bc917fa8fa499/FLAG0010298f3 [2018-10-24 14:03:49,711 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:03:49,712 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label34_false-unreach-call.c [2018-10-24 14:03:49,742 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e1c2e4e5/219ca0fab597410fa15bc917fa8fa499/FLAG0010298f3 [2018-10-24 14:03:49,758 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e1c2e4e5/219ca0fab597410fa15bc917fa8fa499 [2018-10-24 14:03:49,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:03:49,773 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:03:49,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:03:49,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:03:49,782 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:03:49,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:03:49" (1/1) ... [2018-10-24 14:03:49,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa98528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:03:49, skipping insertion in model container [2018-10-24 14:03:49,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:03:49" (1/1) ... [2018-10-24 14:03:49,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:03:49,985 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:03:51,298 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:03:51,303 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:03:51,956 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:03:51,991 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:03:51,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:03:51 WrapperNode [2018-10-24 14:03:51,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:03:51,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:03:51,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:03:51,994 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:03:52,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:03:51" (1/1) ... [2018-10-24 14:03:52,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:03:51" (1/1) ... [2018-10-24 14:03:52,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:03:52,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:03:52,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:03:52,632 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:03:52,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:03:51" (1/1) ... [2018-10-24 14:03:52,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:03:51" (1/1) ... [2018-10-24 14:03:52,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:03:51" (1/1) ... [2018-10-24 14:03:52,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:03:51" (1/1) ... [2018-10-24 14:03:52,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:03:51" (1/1) ... [2018-10-24 14:03:52,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:03:51" (1/1) ... [2018-10-24 14:03:52,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:03:51" (1/1) ... [2018-10-24 14:03:53,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:03:53,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:03:53,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:03:53,018 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:03:53,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:03:51" (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 14:03:53,099 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:03:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:03:53,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:04:03,057 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:04:03,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:04:03 BoogieIcfgContainer [2018-10-24 14:04:03,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:04:03,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:04:03,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:04:03,063 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:04:03,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:03:49" (1/3) ... [2018-10-24 14:04:03,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e719146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:04:03, skipping insertion in model container [2018-10-24 14:04:03,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:03:51" (2/3) ... [2018-10-24 14:04:03,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e719146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:04:03, skipping insertion in model container [2018-10-24 14:04:03,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:04:03" (3/3) ... [2018-10-24 14:04:03,067 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label34_false-unreach-call.c [2018-10-24 14:04:03,077 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:04:03,087 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:04:03,110 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:04:03,158 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:04:03,158 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:04:03,158 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:04:03,159 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:04:03,159 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:04:03,159 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:04:03,159 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:04:03,159 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:04:03,159 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:04:03,193 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 14:04:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-24 14:04:03,203 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:04:03,208 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:04:03,212 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:04:03,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:04:03,220 INFO L82 PathProgramCache]: Analyzing trace with hash -809652462, now seen corresponding path program 1 times [2018-10-24 14:04:03,222 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:04:03,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:04:03,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:03,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:04:03,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:04:03,590 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 14:04:03,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:04:03,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:04:03,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:04:03,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:04:03,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:03,617 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 14:04:16,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:04:16,032 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-24 14:04:16,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:04:16,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-10-24 14:04:16,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:04:16,078 INFO L225 Difference]: With dead ends: 3146 [2018-10-24 14:04:16,078 INFO L226 Difference]: Without dead ends: 2320 [2018-10-24 14:04:16,086 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 14:04:16,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-24 14:04:16,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-24 14:04:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-24 14:04:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4229 transitions. [2018-10-24 14:04:16,255 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4229 transitions. Word has length 17 [2018-10-24 14:04:16,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:04:16,255 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 4229 transitions. [2018-10-24 14:04:16,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:04:16,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4229 transitions. [2018-10-24 14:04:16,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-24 14:04:16,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:04:16,260 INFO L375 BasicCegarLoop]: trace histogram [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 14:04:16,260 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:04:16,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:04:16,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1265211852, now seen corresponding path program 1 times [2018-10-24 14:04:16,261 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:04:16,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:04:16,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:16,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:04:16,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:04:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:04:16,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:04:16,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:04:16,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:04:16,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:04:16,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:16,568 INFO L87 Difference]: Start difference. First operand 2320 states and 4229 transitions. Second operand 4 states. [2018-10-24 14:04:28,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:04:28,118 INFO L93 Difference]: Finished difference Result 9150 states and 16788 transitions. [2018-10-24 14:04:28,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:04:28,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2018-10-24 14:04:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:04:28,155 INFO L225 Difference]: With dead ends: 9150 [2018-10-24 14:04:28,155 INFO L226 Difference]: Without dead ends: 6832 [2018-10-24 14:04:28,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:28,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-24 14:04:28,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-24 14:04:28,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-24 14:04:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 10629 transitions. [2018-10-24 14:04:28,298 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 10629 transitions. Word has length 93 [2018-10-24 14:04:28,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:04:28,298 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 10629 transitions. [2018-10-24 14:04:28,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:04:28,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 10629 transitions. [2018-10-24 14:04:28,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-24 14:04:28,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:04:28,303 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:04:28,303 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:04:28,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:04:28,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1136314661, now seen corresponding path program 1 times [2018-10-24 14:04:28,304 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:04:28,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:04:28,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:28,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:04:28,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:04:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:04:28,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:04:28,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:04:28,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:04:28,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:04:28,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:28,562 INFO L87 Difference]: Start difference. First operand 6832 states and 10629 transitions. Second operand 4 states. [2018-10-24 14:04:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:04:37,027 INFO L93 Difference]: Finished difference Result 27260 states and 42449 transitions. [2018-10-24 14:04:37,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:04:37,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-10-24 14:04:37,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:04:37,108 INFO L225 Difference]: With dead ends: 27260 [2018-10-24 14:04:37,109 INFO L226 Difference]: Without dead ends: 20430 [2018-10-24 14:04:37,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20430 states. [2018-10-24 14:04:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20430 to 13600. [2018-10-24 14:04:37,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13600 states. [2018-10-24 14:04:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13600 states to 13600 states and 19341 transitions. [2018-10-24 14:04:37,440 INFO L78 Accepts]: Start accepts. Automaton has 13600 states and 19341 transitions. Word has length 99 [2018-10-24 14:04:37,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:04:37,441 INFO L481 AbstractCegarLoop]: Abstraction has 13600 states and 19341 transitions. [2018-10-24 14:04:37,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:04:37,441 INFO L276 IsEmpty]: Start isEmpty. Operand 13600 states and 19341 transitions. [2018-10-24 14:04:37,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 14:04:37,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:04:37,448 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:04:37,449 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:04:37,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:04:37,449 INFO L82 PathProgramCache]: Analyzing trace with hash 18925064, now seen corresponding path program 1 times [2018-10-24 14:04:37,449 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:04:37,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:04:37,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:37,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:04:37,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:04:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:04:37,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:04:37,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:04:37,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:04:37,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:04:37,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:37,776 INFO L87 Difference]: Start difference. First operand 13600 states and 19341 transitions. Second operand 4 states. [2018-10-24 14:04:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:04:47,031 INFO L93 Difference]: Finished difference Result 52782 states and 74748 transitions. [2018-10-24 14:04:47,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:04:47,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2018-10-24 14:04:47,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:04:47,116 INFO L225 Difference]: With dead ends: 52782 [2018-10-24 14:04:47,117 INFO L226 Difference]: Without dead ends: 39184 [2018-10-24 14:04:47,138 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 14:04:47,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39184 states. [2018-10-24 14:04:47,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39184 to 26384. [2018-10-24 14:04:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26384 states. [2018-10-24 14:04:47,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26384 states to 26384 states and 33902 transitions. [2018-10-24 14:04:47,714 INFO L78 Accepts]: Start accepts. Automaton has 26384 states and 33902 transitions. Word has length 117 [2018-10-24 14:04:47,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:04:47,715 INFO L481 AbstractCegarLoop]: Abstraction has 26384 states and 33902 transitions. [2018-10-24 14:04:47,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:04:47,715 INFO L276 IsEmpty]: Start isEmpty. Operand 26384 states and 33902 transitions. [2018-10-24 14:04:47,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-24 14:04:47,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:04:47,722 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:47,722 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:04:47,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:04:47,723 INFO L82 PathProgramCache]: Analyzing trace with hash 81483374, now seen corresponding path program 1 times [2018-10-24 14:04:47,723 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:04:47,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:04:47,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:47,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:04:47,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:04:48,130 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:04:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:04:48,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:04:48,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:04:48,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:04:48,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:04:48,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:48,251 INFO L87 Difference]: Start difference. First operand 26384 states and 33902 transitions. Second operand 4 states. [2018-10-24 14:05:04,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:04,388 INFO L93 Difference]: Finished difference Result 52766 states and 67802 transitions. [2018-10-24 14:05:04,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:05:04,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 246 [2018-10-24 14:05:04,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:04,450 INFO L225 Difference]: With dead ends: 52766 [2018-10-24 14:05:04,451 INFO L226 Difference]: Without dead ends: 26384 [2018-10-24 14:05:04,480 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 14:05:04,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26384 states. [2018-10-24 14:05:04,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26384 to 26384. [2018-10-24 14:05:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26384 states. [2018-10-24 14:05:04,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26384 states to 26384 states and 32888 transitions. [2018-10-24 14:05:04,832 INFO L78 Accepts]: Start accepts. Automaton has 26384 states and 32888 transitions. Word has length 246 [2018-10-24 14:05:04,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:04,832 INFO L481 AbstractCegarLoop]: Abstraction has 26384 states and 32888 transitions. [2018-10-24 14:05:04,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:05:04,833 INFO L276 IsEmpty]: Start isEmpty. Operand 26384 states and 32888 transitions. [2018-10-24 14:05:04,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-24 14:05:04,838 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:04,838 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:04,838 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:04,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:04,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1385261348, now seen corresponding path program 1 times [2018-10-24 14:05:04,839 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:04,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:04,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:04,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:04,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-24 14:05:05,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:05:05,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:05:05,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:05:05,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:05:05,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:05,132 INFO L87 Difference]: Start difference. First operand 26384 states and 32888 transitions. Second operand 4 states. [2018-10-24 14:05:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:11,380 INFO L93 Difference]: Finished difference Result 76078 states and 95112 transitions. [2018-10-24 14:05:11,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:05:11,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 250 [2018-10-24 14:05:11,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:11,442 INFO L225 Difference]: With dead ends: 76078 [2018-10-24 14:05:11,442 INFO L226 Difference]: Without dead ends: 49696 [2018-10-24 14:05:11,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:11,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49696 states. [2018-10-24 14:05:11,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49696 to 49696. [2018-10-24 14:05:11,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49696 states. [2018-10-24 14:05:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49696 states to 49696 states and 58511 transitions. [2018-10-24 14:05:12,036 INFO L78 Accepts]: Start accepts. Automaton has 49696 states and 58511 transitions. Word has length 250 [2018-10-24 14:05:12,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:12,037 INFO L481 AbstractCegarLoop]: Abstraction has 49696 states and 58511 transitions. [2018-10-24 14:05:12,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:05:12,037 INFO L276 IsEmpty]: Start isEmpty. Operand 49696 states and 58511 transitions. [2018-10-24 14:05:12,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-24 14:05:12,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:12,048 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:12,048 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:12,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:12,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1126523249, now seen corresponding path program 1 times [2018-10-24 14:05:12,049 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:12,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:12,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:12,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:12,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-10-24 14:05:12,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:05:12,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:05:12,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:05:12,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:05:12,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:12,339 INFO L87 Difference]: Start difference. First operand 49696 states and 58511 transitions. Second operand 4 states. [2018-10-24 14:05:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:21,104 INFO L93 Difference]: Finished difference Result 121950 states and 145256 transitions. [2018-10-24 14:05:21,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:05:21,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 275 [2018-10-24 14:05:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:21,206 INFO L225 Difference]: With dead ends: 121950 [2018-10-24 14:05:21,206 INFO L226 Difference]: Without dead ends: 67732 [2018-10-24 14:05:21,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:21,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67732 states. [2018-10-24 14:05:21,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67732 to 67732. [2018-10-24 14:05:21,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67732 states. [2018-10-24 14:05:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67732 states to 67732 states and 77591 transitions. [2018-10-24 14:05:21,968 INFO L78 Accepts]: Start accepts. Automaton has 67732 states and 77591 transitions. Word has length 275 [2018-10-24 14:05:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:21,969 INFO L481 AbstractCegarLoop]: Abstraction has 67732 states and 77591 transitions. [2018-10-24 14:05:21,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:05:21,969 INFO L276 IsEmpty]: Start isEmpty. Operand 67732 states and 77591 transitions. [2018-10-24 14:05:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-24 14:05:21,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:21,979 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:21,979 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:21,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:21,980 INFO L82 PathProgramCache]: Analyzing trace with hash -442786988, now seen corresponding path program 1 times [2018-10-24 14:05:21,980 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:21,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:21,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:21,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:21,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-10-24 14:05:22,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:05:22,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:05:22,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:05:22,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:05:22,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:05:22,322 INFO L87 Difference]: Start difference. First operand 67732 states and 77591 transitions. Second operand 3 states. [2018-10-24 14:05:30,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:30,218 INFO L93 Difference]: Finished difference Result 151254 states and 173052 transitions. [2018-10-24 14:05:30,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:05:30,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 277 [2018-10-24 14:05:30,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:30,313 INFO L225 Difference]: With dead ends: 151254 [2018-10-24 14:05:30,313 INFO L226 Difference]: Without dead ends: 84276 [2018-10-24 14:05:30,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:05:30,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84276 states. [2018-10-24 14:05:31,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84276 to 83524. [2018-10-24 14:05:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83524 states. [2018-10-24 14:05:31,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83524 states to 83524 states and 94634 transitions. [2018-10-24 14:05:31,695 INFO L78 Accepts]: Start accepts. Automaton has 83524 states and 94634 transitions. Word has length 277 [2018-10-24 14:05:31,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:31,696 INFO L481 AbstractCegarLoop]: Abstraction has 83524 states and 94634 transitions. [2018-10-24 14:05:31,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:05:31,696 INFO L276 IsEmpty]: Start isEmpty. Operand 83524 states and 94634 transitions. [2018-10-24 14:05:31,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-24 14:05:31,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:31,706 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:05:31,706 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:31,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:31,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1297927624, now seen corresponding path program 1 times [2018-10-24 14:05:31,707 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:31,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:31,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:31,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:31,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:32,179 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-24 14:05:32,353 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-24 14:05:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 201 proven. 5 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-10-24 14:05:32,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:05:32,485 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 14:05:32,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:32,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:05:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-10-24 14:05:32,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:05:32,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 14:05:32,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:05:32,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:05:32,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:05:32,835 INFO L87 Difference]: Start difference. First operand 83524 states and 94634 transitions. Second operand 7 states. [2018-10-24 14:05:58,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:58,300 INFO L93 Difference]: Finished difference Result 192626 states and 216953 transitions. [2018-10-24 14:05:58,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 14:05:58,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2018-10-24 14:05:58,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:58,439 INFO L225 Difference]: With dead ends: 192626 [2018-10-24 14:05:58,439 INFO L226 Difference]: Without dead ends: 107597 [2018-10-24 14:05:58,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:05:58,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107597 states. [2018-10-24 14:05:59,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107597 to 84271. [2018-10-24 14:05:59,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84271 states. [2018-10-24 14:06:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84271 states to 84271 states and 91248 transitions. [2018-10-24 14:06:00,027 INFO L78 Accepts]: Start accepts. Automaton has 84271 states and 91248 transitions. Word has length 278 [2018-10-24 14:06:00,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:00,027 INFO L481 AbstractCegarLoop]: Abstraction has 84271 states and 91248 transitions. [2018-10-24 14:06:00,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:06:00,028 INFO L276 IsEmpty]: Start isEmpty. Operand 84271 states and 91248 transitions. [2018-10-24 14:06:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2018-10-24 14:06:00,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:00,093 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:00,093 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:00,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:00,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1119646949, now seen corresponding path program 1 times [2018-10-24 14:06:00,094 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:00,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:00,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:00,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:00,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 14:06:01,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:06:01,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:06:01,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:06:01,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:06:01,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:06:01,772 INFO L87 Difference]: Start difference. First operand 84271 states and 91248 transitions. Second operand 4 states. [2018-10-24 14:06:10,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:10,244 INFO L93 Difference]: Finished difference Result 176812 states and 191717 transitions. [2018-10-24 14:06:10,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:06:10,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 665 [2018-10-24 14:06:10,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:10,353 INFO L225 Difference]: With dead ends: 176812 [2018-10-24 14:06:10,353 INFO L226 Difference]: Without dead ends: 93295 [2018-10-24 14:06:10,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:06:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93295 states. [2018-10-24 14:06:11,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93295 to 90287. [2018-10-24 14:06:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90287 states. [2018-10-24 14:06:12,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90287 states to 90287 states and 95379 transitions. [2018-10-24 14:06:12,011 INFO L78 Accepts]: Start accepts. Automaton has 90287 states and 95379 transitions. Word has length 665 [2018-10-24 14:06:12,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:12,013 INFO L481 AbstractCegarLoop]: Abstraction has 90287 states and 95379 transitions. [2018-10-24 14:06:12,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:06:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 90287 states and 95379 transitions. [2018-10-24 14:06:12,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2018-10-24 14:06:12,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:12,086 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:12,087 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:12,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:12,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1717450240, now seen corresponding path program 1 times [2018-10-24 14:06:12,088 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:12,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:12,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:12,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:12,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:12,634 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2018-10-24 14:06:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2018-10-24 14:06:13,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:06:13,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:06:13,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:06:13,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:06:13,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:06:13,125 INFO L87 Difference]: Start difference. First operand 90287 states and 95379 transitions. Second operand 6 states. [2018-10-24 14:06:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:23,530 INFO L93 Difference]: Finished difference Result 205387 states and 217688 transitions. [2018-10-24 14:06:23,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:06:23,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 792 [2018-10-24 14:06:23,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:23,648 INFO L225 Difference]: With dead ends: 205387 [2018-10-24 14:06:23,648 INFO L226 Difference]: Without dead ends: 114349 [2018-10-24 14:06:23,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:06:23,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114349 states. [2018-10-24 14:06:24,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114349 to 112845. [2018-10-24 14:06:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112845 states. [2018-10-24 14:06:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112845 states to 112845 states and 118572 transitions. [2018-10-24 14:06:24,661 INFO L78 Accepts]: Start accepts. Automaton has 112845 states and 118572 transitions. Word has length 792 [2018-10-24 14:06:24,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:24,661 INFO L481 AbstractCegarLoop]: Abstraction has 112845 states and 118572 transitions. [2018-10-24 14:06:24,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:06:24,662 INFO L276 IsEmpty]: Start isEmpty. Operand 112845 states and 118572 transitions. [2018-10-24 14:06:24,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2018-10-24 14:06:24,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:24,718 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:24,718 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:24,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:24,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1873853568, now seen corresponding path program 1 times [2018-10-24 14:06:24,719 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:24,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:24,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:24,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:24,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 599 proven. 262 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 14:06:27,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:06:27,217 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 14:06:27,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:27,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:06:28,097 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 517 DAG size of output: 24 [2018-10-24 14:06:53,111 WARN L179 SmtUtils]: Spent 24.62 s on a formula simplification. DAG size of input: 262 DAG size of output: 53 [2018-10-24 14:06:53,902 WARN L179 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2018-10-24 14:06:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 744 proven. 117 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 14:06:58,308 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:06:58,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2018-10-24 14:06:58,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 14:06:58,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 14:06:58,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:06:58,311 INFO L87 Difference]: Start difference. First operand 112845 states and 118572 transitions. Second operand 12 states. Received shutdown request... [2018-10-24 14:07:42,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-24 14:07:42,788 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:07:42,793 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:07:42,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:07:42 BoogieIcfgContainer [2018-10-24 14:07:42,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:07:42,795 INFO L168 Benchmark]: Toolchain (without parser) took 233023.20 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 901.6 MB. Max. memory is 7.1 GB. [2018-10-24 14:07:42,796 INFO L168 Benchmark]: CDTParser took 0.24 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 14:07:42,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2218.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:07:42,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 637.83 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 812.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-24 14:07:42,800 INFO L168 Benchmark]: Boogie Preprocessor took 385.51 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:07:42,801 INFO L168 Benchmark]: RCFGBuilder took 10040.57 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 206.0 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -130.8 MB). Peak memory consumption was 617.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:07:42,803 INFO L168 Benchmark]: TraceAbstraction took 219734.64 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.1 GB). Free memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: -357.3 MB). Peak memory consumption was 771.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:07:42,814 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2218.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 637.83 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 812.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 385.51 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10040.57 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 206.0 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -130.8 MB). Peak memory consumption was 617.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219734.64 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.1 GB). Free memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: -357.3 MB). Peak memory consumption was 771.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 60). Cancelled while BasicCegarLoop was constructing difference of abstraction (112845states) and FLOYD_HOARE automaton (currently 24 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (170706 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 219.6s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 170.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6794 SDtfs, 39104 SDslu, 1297 SDs, 0 SdLazy, 76914 SolverSat, 14613 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 142.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1264 GetRequests, 1203 SyntacticMatches, 9 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 28.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112845occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 48220 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 35.5s InterpolantComputationTime, 5209 NumberOfCodeBlocks, 5209 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5195 ConstructedInterpolants, 292 QuantifiedInterpolants, 26771965 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1461 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 3316/3700 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown