java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:52:40,595 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:52:40,597 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:52:40,610 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:52:40,610 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:52:40,611 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:52:40,613 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:52:40,614 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:52:40,616 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:52:40,617 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:52:40,618 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:52:40,618 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:52:40,619 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:52:40,620 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:52:40,621 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:52:40,622 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:52:40,623 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:52:40,624 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:52:40,626 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:52:40,628 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:52:40,629 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:52:40,630 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:52:40,633 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 21:52:40,646 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 21:52:40,661 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:52:40,661 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:52:40,662 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:52:40,662 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:52:40,663 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:52:40,663 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:52:40,663 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:52:40,663 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:52:40,664 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:52:40,664 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:52:40,664 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:52:40,664 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:52:40,664 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:52:40,665 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:52:40,665 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:52:40,665 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:52:40,665 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:52:40,665 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:52:40,666 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:52:40,666 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:52:40,666 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:52:40,666 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:52:40,666 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:52:40,667 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:52:40,667 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:52:40,667 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:52:40,667 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:52:40,667 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:52:40,717 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:52:40,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:52:40,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:52:40,737 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:52:40,737 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:52:40,738 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c [2018-10-26 21:52:40,809 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/957b0ef3c/1dece32d59dd41bd8b151f4e0d5c8049/FLAGe24229939 [2018-10-26 21:52:41,551 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:52:41,553 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c [2018-10-26 21:52:41,583 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/957b0ef3c/1dece32d59dd41bd8b151f4e0d5c8049/FLAGe24229939 [2018-10-26 21:52:41,606 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/957b0ef3c/1dece32d59dd41bd8b151f4e0d5c8049 [2018-10-26 21:52:41,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:52:41,621 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:52:41,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:52:41,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:52:41,628 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:52:41,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:52:41" (1/1) ... [2018-10-26 21:52:41,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b0e4d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:52:41, skipping insertion in model container [2018-10-26 21:52:41,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:52:41" (1/1) ... [2018-10-26 21:52:41,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:52:41,777 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:52:42,755 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:52:42,761 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:52:43,179 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:52:43,201 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:52:43,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:52:43 WrapperNode [2018-10-26 21:52:43,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:52:43,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:52:43,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:52:43,203 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:52:43,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:52:43" (1/1) ... [2018-10-26 21:52:43,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:52:43" (1/1) ... [2018-10-26 21:52:43,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:52:43,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:52:43,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:52:43,775 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:52:43,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:52:43" (1/1) ... [2018-10-26 21:52:43,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:52:43" (1/1) ... [2018-10-26 21:52:43,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:52:43" (1/1) ... [2018-10-26 21:52:43,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:52:43" (1/1) ... [2018-10-26 21:52:43,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:52:43" (1/1) ... [2018-10-26 21:52:44,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:52:43" (1/1) ... [2018-10-26 21:52:44,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:52:43" (1/1) ... [2018-10-26 21:52:44,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:52:44,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:52:44,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:52:44,154 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:52:44,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:52:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:52:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:52:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:52:44,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:52:54,840 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:52:54,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:52:54 BoogieIcfgContainer [2018-10-26 21:52:54,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:52:54,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:52:54,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:52:54,847 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:52:54,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:52:41" (1/3) ... [2018-10-26 21:52:54,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e7bc9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:52:54, skipping insertion in model container [2018-10-26 21:52:54,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:52:43" (2/3) ... [2018-10-26 21:52:54,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e7bc9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:52:54, skipping insertion in model container [2018-10-26 21:52:54,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:52:54" (3/3) ... [2018-10-26 21:52:54,851 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label22_true-unreach-call.c [2018-10-26 21:52:54,861 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:52:54,871 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:52:54,888 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:52:54,927 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:52:54,928 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:52:54,928 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:52:54,928 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:52:54,928 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:52:54,929 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:52:54,929 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:52:54,929 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:52:54,929 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:52:54,961 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-26 21:52:54,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-26 21:52:54,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:52:54,980 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, 1, 1] [2018-10-26 21:52:54,984 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:52:54,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:52:54,989 INFO L82 PathProgramCache]: Analyzing trace with hash -2139005982, now seen corresponding path program 1 times [2018-10-26 21:52:54,991 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:52:54,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:52:55,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:52:55,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:52:55,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:52:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:52:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:52:55,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:52:55,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:52:55,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:52:55,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:52:55,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:52:55,545 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-26 21:53:07,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:53:07,594 INFO L93 Difference]: Finished difference Result 2122 states and 3950 transitions. [2018-10-26 21:53:07,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:53:07,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-10-26 21:53:07,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:53:07,632 INFO L225 Difference]: With dead ends: 2122 [2018-10-26 21:53:07,632 INFO L226 Difference]: Without dead ends: 1524 [2018-10-26 21:53:07,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:53:07,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2018-10-26 21:53:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1497. [2018-10-26 21:53:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1497 states. [2018-10-26 21:53:07,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2656 transitions. [2018-10-26 21:53:07,804 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2656 transitions. Word has length 52 [2018-10-26 21:53:07,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:53:07,804 INFO L481 AbstractCegarLoop]: Abstraction has 1497 states and 2656 transitions. [2018-10-26 21:53:07,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:53:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2656 transitions. [2018-10-26 21:53:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-26 21:53:07,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:53:07,811 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:53:07,812 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:53:07,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:53:07,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1499238789, now seen corresponding path program 1 times [2018-10-26 21:53:07,812 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:53:07,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:53:07,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:07,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:53:07,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:53:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:53:08,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:53:08,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:53:08,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:53:08,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:53:08,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:53:08,143 INFO L87 Difference]: Start difference. First operand 1497 states and 2656 transitions. Second operand 4 states. [2018-10-26 21:53:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:53:20,379 INFO L93 Difference]: Finished difference Result 5604 states and 10151 transitions. [2018-10-26 21:53:20,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:53:20,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2018-10-26 21:53:20,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:53:20,405 INFO L225 Difference]: With dead ends: 5604 [2018-10-26 21:53:20,405 INFO L226 Difference]: Without dead ends: 4109 [2018-10-26 21:53:20,411 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:53:20,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2018-10-26 21:53:20,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4098. [2018-10-26 21:53:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4098 states. [2018-10-26 21:53:20,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 6039 transitions. [2018-10-26 21:53:20,497 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 6039 transitions. Word has length 127 [2018-10-26 21:53:20,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:53:20,498 INFO L481 AbstractCegarLoop]: Abstraction has 4098 states and 6039 transitions. [2018-10-26 21:53:20,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:53:20,498 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 6039 transitions. [2018-10-26 21:53:20,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-26 21:53:20,510 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:53:20,511 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, 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] [2018-10-26 21:53:20,511 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:53:20,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:53:20,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1510720438, now seen corresponding path program 1 times [2018-10-26 21:53:20,516 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:53:20,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:53:20,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:20,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:53:20,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:53:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:53:20,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:53:20,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:53:20,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:53:20,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:53:20,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:53:20,839 INFO L87 Difference]: Start difference. First operand 4098 states and 6039 transitions. Second operand 4 states. [2018-10-26 21:53:27,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:53:27,692 INFO L93 Difference]: Finished difference Result 15443 states and 23002 transitions. [2018-10-26 21:53:27,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:53:27,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 190 [2018-10-26 21:53:27,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:53:27,748 INFO L225 Difference]: With dead ends: 15443 [2018-10-26 21:53:27,749 INFO L226 Difference]: Without dead ends: 11347 [2018-10-26 21:53:27,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:53:27,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11347 states. [2018-10-26 21:53:27,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11347 to 11347. [2018-10-26 21:53:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11347 states. [2018-10-26 21:53:27,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11347 states to 11347 states and 14546 transitions. [2018-10-26 21:53:27,983 INFO L78 Accepts]: Start accepts. Automaton has 11347 states and 14546 transitions. Word has length 190 [2018-10-26 21:53:27,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:53:27,984 INFO L481 AbstractCegarLoop]: Abstraction has 11347 states and 14546 transitions. [2018-10-26 21:53:27,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:53:27,984 INFO L276 IsEmpty]: Start isEmpty. Operand 11347 states and 14546 transitions. [2018-10-26 21:53:27,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-26 21:53:27,989 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:53:27,990 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, 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] [2018-10-26 21:53:27,990 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:53:27,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:53:27,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1296060174, now seen corresponding path program 1 times [2018-10-26 21:53:27,990 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:53:27,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:53:27,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:27,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:53:27,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:53:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:53:28,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:53:28,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:53:28,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:53:28,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:53:28,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:53:28,348 INFO L87 Difference]: Start difference. First operand 11347 states and 14546 transitions. Second operand 4 states. [2018-10-26 21:53:34,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:53:34,444 INFO L93 Difference]: Finished difference Result 23544 states and 30340 transitions. [2018-10-26 21:53:34,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:53:34,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2018-10-26 21:53:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:53:34,495 INFO L225 Difference]: With dead ends: 23544 [2018-10-26 21:53:34,496 INFO L226 Difference]: Without dead ends: 12199 [2018-10-26 21:53:34,511 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 [2018-10-26 21:53:34,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12199 states. [2018-10-26 21:53:34,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12199 to 12199. [2018-10-26 21:53:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12199 states. [2018-10-26 21:53:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12199 states to 12199 states and 14547 transitions. [2018-10-26 21:53:34,887 INFO L78 Accepts]: Start accepts. Automaton has 12199 states and 14547 transitions. Word has length 215 [2018-10-26 21:53:34,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:53:34,888 INFO L481 AbstractCegarLoop]: Abstraction has 12199 states and 14547 transitions. [2018-10-26 21:53:34,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:53:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 12199 states and 14547 transitions. [2018-10-26 21:53:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-26 21:53:34,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:53:34,896 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:53:34,896 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:53:34,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:53:34,896 INFO L82 PathProgramCache]: Analyzing trace with hash -82047802, now seen corresponding path program 1 times [2018-10-26 21:53:34,897 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:53:34,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:53:34,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:34,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:53:34,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:53:35,288 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:53:35,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:53:35,289 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:53:35,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:53:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:53:35,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:53:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:53:35,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:53:35,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-26 21:53:35,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:53:35,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:53:35,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:53:35,806 INFO L87 Difference]: Start difference. First operand 12199 states and 14547 transitions. Second operand 7 states. [2018-10-26 21:54:00,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:54:00,160 INFO L93 Difference]: Finished difference Result 37706 states and 45491 transitions. [2018-10-26 21:54:00,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:54:00,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2018-10-26 21:54:00,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:54:00,199 INFO L225 Difference]: With dead ends: 37706 [2018-10-26 21:54:00,200 INFO L226 Difference]: Without dead ends: 21179 [2018-10-26 21:54:00,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-26 21:54:00,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21179 states. [2018-10-26 21:54:00,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21179 to 18151. [2018-10-26 21:54:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18151 states. [2018-10-26 21:54:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18151 states to 18151 states and 20399 transitions. [2018-10-26 21:54:00,538 INFO L78 Accepts]: Start accepts. Automaton has 18151 states and 20399 transitions. Word has length 274 [2018-10-26 21:54:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:54:00,539 INFO L481 AbstractCegarLoop]: Abstraction has 18151 states and 20399 transitions. [2018-10-26 21:54:00,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:54:00,540 INFO L276 IsEmpty]: Start isEmpty. Operand 18151 states and 20399 transitions. [2018-10-26 21:54:00,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-10-26 21:54:00,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:54:00,551 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-26 21:54:00,551 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:54:00,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:54:00,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1503008822, now seen corresponding path program 1 times [2018-10-26 21:54:00,552 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:54:00,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:54:00,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:00,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:00,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:01,413 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-26 21:54:01,605 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-26 21:54:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 288 proven. 83 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-26 21:54:01,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:54:01,811 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:54:01,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:02,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:54:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 288 proven. 83 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-26 21:54:02,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:54:02,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-10-26 21:54:02,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 21:54:02,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 21:54:02,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:54:02,500 INFO L87 Difference]: Start difference. First operand 18151 states and 20399 transitions. Second operand 9 states. [2018-10-26 21:54:13,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:54:13,068 INFO L93 Difference]: Finished difference Result 38007 states and 42625 transitions. [2018-10-26 21:54:13,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:54:13,068 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 367 [2018-10-26 21:54:13,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:54:13,109 INFO L225 Difference]: With dead ends: 38007 [2018-10-26 21:54:13,109 INFO L226 Difference]: Without dead ends: 20287 [2018-10-26 21:54:13,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-10-26 21:54:13,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20287 states. [2018-10-26 21:54:13,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20287 to 19855. [2018-10-26 21:54:13,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19855 states. [2018-10-26 21:54:13,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19855 states to 19855 states and 22191 transitions. [2018-10-26 21:54:13,390 INFO L78 Accepts]: Start accepts. Automaton has 19855 states and 22191 transitions. Word has length 367 [2018-10-26 21:54:13,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:54:13,390 INFO L481 AbstractCegarLoop]: Abstraction has 19855 states and 22191 transitions. [2018-10-26 21:54:13,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 21:54:13,391 INFO L276 IsEmpty]: Start isEmpty. Operand 19855 states and 22191 transitions. [2018-10-26 21:54:13,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-10-26 21:54:13,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:54:13,406 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:54:13,407 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:54:13,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:54:13,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1838844559, now seen corresponding path program 1 times [2018-10-26 21:54:13,407 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:54:13,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:54:13,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:13,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:13,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:14,246 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-26 21:54:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 149 proven. 291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:54:14,840 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:54:14,840 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:54:14,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:14,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:54:16,436 WARN L179 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 104 DAG size of output: 30 [2018-10-26 21:54:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-10-26 21:54:16,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:54:16,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 21:54:16,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:54:16,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:54:16,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:54:16,986 INFO L87 Difference]: Start difference. First operand 19855 states and 22191 transitions. Second operand 7 states. [2018-10-26 21:54:17,687 WARN L179 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-10-26 21:54:21,193 WARN L179 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-26 21:54:25,503 WARN L179 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-26 21:54:49,925 WARN L179 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-10-26 21:55:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:55:39,240 INFO L93 Difference]: Finished difference Result 78223 states and 88145 transitions. [2018-10-26 21:55:39,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 21:55:39,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2018-10-26 21:55:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:55:39,335 INFO L225 Difference]: With dead ends: 78223 [2018-10-26 21:55:39,336 INFO L226 Difference]: Without dead ends: 58370 [2018-10-26 21:55:39,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-10-26 21:55:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58370 states. [2018-10-26 21:55:39,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58370 to 47579. [2018-10-26 21:55:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47579 states. [2018-10-26 21:55:40,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47579 states to 47579 states and 52752 transitions. [2018-10-26 21:55:40,016 INFO L78 Accepts]: Start accepts. Automaton has 47579 states and 52752 transitions. Word has length 419 [2018-10-26 21:55:40,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:55:40,017 INFO L481 AbstractCegarLoop]: Abstraction has 47579 states and 52752 transitions. [2018-10-26 21:55:40,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:55:40,017 INFO L276 IsEmpty]: Start isEmpty. Operand 47579 states and 52752 transitions. [2018-10-26 21:55:40,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-10-26 21:55:40,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:55:40,038 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:55:40,038 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:55:40,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:55:40,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1167941486, now seen corresponding path program 1 times [2018-10-26 21:55:40,039 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:55:40,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:55:40,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:55:40,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:55:40,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:55:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:55:40,881 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-10-26 21:55:40,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:55:40,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:55:40,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:55:40,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:55:40,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:55:40,882 INFO L87 Difference]: Start difference. First operand 47579 states and 52752 transitions. Second operand 4 states. [2018-10-26 21:55:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:55:47,919 INFO L93 Difference]: Finished difference Result 116914 states and 130482 transitions. [2018-10-26 21:55:47,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:55:47,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 423 [2018-10-26 21:55:47,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:55:47,983 INFO L225 Difference]: With dead ends: 116914 [2018-10-26 21:55:47,984 INFO L226 Difference]: Without dead ends: 63769 [2018-10-26 21:55:48,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:55:48,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63769 states. [2018-10-26 21:55:48,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63769 to 45417. [2018-10-26 21:55:48,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45417 states. [2018-10-26 21:55:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45417 states to 45417 states and 49842 transitions. [2018-10-26 21:55:48,651 INFO L78 Accepts]: Start accepts. Automaton has 45417 states and 49842 transitions. Word has length 423 [2018-10-26 21:55:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:55:48,652 INFO L481 AbstractCegarLoop]: Abstraction has 45417 states and 49842 transitions. [2018-10-26 21:55:48,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:55:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 45417 states and 49842 transitions. [2018-10-26 21:55:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-10-26 21:55:48,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:55:48,677 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, 5, 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, 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] [2018-10-26 21:55:48,677 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:55:48,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:55:48,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1727056150, now seen corresponding path program 1 times [2018-10-26 21:55:48,678 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:55:48,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:55:48,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:55:48,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:55:48,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:55:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:55:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-26 21:55:49,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:55:49,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:55:49,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:55:49,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:55:49,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:55:49,048 INFO L87 Difference]: Start difference. First operand 45417 states and 49842 transitions. Second operand 3 states. [2018-10-26 21:55:54,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:55:54,647 INFO L93 Difference]: Finished difference Result 104890 states and 115808 transitions. [2018-10-26 21:55:54,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:55:54,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 467 [2018-10-26 21:55:54,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:55:54,701 INFO L225 Difference]: With dead ends: 104890 [2018-10-26 21:55:54,701 INFO L226 Difference]: Without dead ends: 53887 [2018-10-26 21:55:54,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:55:54,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53887 states. [2018-10-26 21:55:55,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53887 to 47052. [2018-10-26 21:55:55,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47052 states. [2018-10-26 21:55:55,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47052 states to 47052 states and 51388 transitions. [2018-10-26 21:55:55,247 INFO L78 Accepts]: Start accepts. Automaton has 47052 states and 51388 transitions. Word has length 467 [2018-10-26 21:55:55,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:55:55,248 INFO L481 AbstractCegarLoop]: Abstraction has 47052 states and 51388 transitions. [2018-10-26 21:55:55,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:55:55,248 INFO L276 IsEmpty]: Start isEmpty. Operand 47052 states and 51388 transitions. [2018-10-26 21:55:55,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-10-26 21:55:55,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:55:55,268 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, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:55:55,268 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:55:55,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:55:55,269 INFO L82 PathProgramCache]: Analyzing trace with hash -854931124, now seen corresponding path program 1 times [2018-10-26 21:55:55,269 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:55:55,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:55:55,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:55:55,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:55:55,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:55:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:55:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-26 21:55:55,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:55:55,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:55:55,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:55:55,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:55:55,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:55:55,683 INFO L87 Difference]: Start difference. First operand 47052 states and 51388 transitions. Second operand 4 states. [2018-10-26 21:56:02,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:56:02,648 INFO L93 Difference]: Finished difference Result 117138 states and 127900 transitions. [2018-10-26 21:56:02,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:56:02,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 486 [2018-10-26 21:56:02,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:56:02,713 INFO L225 Difference]: With dead ends: 117138 [2018-10-26 21:56:02,713 INFO L226 Difference]: Without dead ends: 65376 [2018-10-26 21:56:02,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:56:02,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65376 states. [2018-10-26 21:56:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65376 to 54708. [2018-10-26 21:56:03,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54708 states. [2018-10-26 21:56:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54708 states to 54708 states and 58967 transitions. [2018-10-26 21:56:03,651 INFO L78 Accepts]: Start accepts. Automaton has 54708 states and 58967 transitions. Word has length 486 [2018-10-26 21:56:03,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:56:03,651 INFO L481 AbstractCegarLoop]: Abstraction has 54708 states and 58967 transitions. [2018-10-26 21:56:03,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:56:03,652 INFO L276 IsEmpty]: Start isEmpty. Operand 54708 states and 58967 transitions. [2018-10-26 21:56:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2018-10-26 21:56:03,665 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:56:03,666 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:56:03,666 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:56:03,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:56:03,666 INFO L82 PathProgramCache]: Analyzing trace with hash -942093832, now seen corresponding path program 1 times [2018-10-26 21:56:03,667 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:56:03,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:56:03,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:56:03,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:56:03,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:56:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:56:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 483 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2018-10-26 21:56:04,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:56:04,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:56:04,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:56:04,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:56:04,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:56:04,189 INFO L87 Difference]: Start difference. First operand 54708 states and 58967 transitions. Second operand 4 states. [2018-10-26 21:56:08,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:56:08,526 INFO L93 Difference]: Finished difference Result 127740 states and 137862 transitions. [2018-10-26 21:56:08,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:56:08,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 519 [2018-10-26 21:56:08,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:56:08,607 INFO L225 Difference]: With dead ends: 127740 [2018-10-26 21:56:08,607 INFO L226 Difference]: Without dead ends: 73033 [2018-10-26 21:56:08,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:56:08,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73033 states. [2018-10-26 21:56:09,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73033 to 64062. [2018-10-26 21:56:09,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64062 states. [2018-10-26 21:56:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64062 states to 64062 states and 68321 transitions. [2018-10-26 21:56:09,934 INFO L78 Accepts]: Start accepts. Automaton has 64062 states and 68321 transitions. Word has length 519 [2018-10-26 21:56:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:56:09,935 INFO L481 AbstractCegarLoop]: Abstraction has 64062 states and 68321 transitions. [2018-10-26 21:56:09,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:56:09,935 INFO L276 IsEmpty]: Start isEmpty. Operand 64062 states and 68321 transitions. [2018-10-26 21:56:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2018-10-26 21:56:09,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:56:09,953 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:56:09,953 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:56:09,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:56:09,954 INFO L82 PathProgramCache]: Analyzing trace with hash -955734601, now seen corresponding path program 1 times [2018-10-26 21:56:09,954 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:56:09,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:56:09,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:56:09,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:56:09,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:56:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:56:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-26 21:56:10,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:56:10,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:56:10,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:56:10,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:56:10,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:56:10,658 INFO L87 Difference]: Start difference. First operand 64062 states and 68321 transitions. Second operand 3 states. [2018-10-26 21:56:13,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:56:13,243 INFO L93 Difference]: Finished difference Result 127695 states and 136211 transitions. [2018-10-26 21:56:13,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:56:13,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 622 [2018-10-26 21:56:13,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:56:13,294 INFO L225 Difference]: With dead ends: 127695 [2018-10-26 21:56:13,294 INFO L226 Difference]: Without dead ends: 64061 [2018-10-26 21:56:13,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:56:13,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64061 states. [2018-10-26 21:56:13,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64061 to 64061. [2018-10-26 21:56:13,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64061 states. [2018-10-26 21:56:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64061 states to 64061 states and 68312 transitions. [2018-10-26 21:56:13,946 INFO L78 Accepts]: Start accepts. Automaton has 64061 states and 68312 transitions. Word has length 622 [2018-10-26 21:56:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:56:13,947 INFO L481 AbstractCegarLoop]: Abstraction has 64061 states and 68312 transitions. [2018-10-26 21:56:13,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:56:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 64061 states and 68312 transitions. [2018-10-26 21:56:13,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2018-10-26 21:56:13,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:56:13,992 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, 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, 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, 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] [2018-10-26 21:56:13,993 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:56:13,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:56:13,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1760215615, now seen corresponding path program 1 times [2018-10-26 21:56:13,993 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:56:13,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:56:13,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:56:13,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:56:13,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:56:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:56:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 199 proven. 521 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-26 21:56:16,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:56:16,725 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:56:16,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:56:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:56:16,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:56:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 531 proven. 190 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-26 21:56:18,656 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:56:18,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-26 21:56:18,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:56:18,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:56:18,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:56:18,659 INFO L87 Difference]: Start difference. First operand 64061 states and 68312 transitions. Second operand 8 states. [2018-10-26 21:56:28,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:56:28,804 INFO L93 Difference]: Finished difference Result 139220 states and 148263 transitions. [2018-10-26 21:56:28,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:56:28,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 812 [2018-10-26 21:56:28,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:56:28,881 INFO L225 Difference]: With dead ends: 139220 [2018-10-26 21:56:28,881 INFO L226 Difference]: Without dead ends: 75158 [2018-10-26 21:56:28,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 810 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:56:28,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75158 states. [2018-10-26 21:56:30,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75158 to 63200. [2018-10-26 21:56:30,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63200 states. [2018-10-26 21:56:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63200 states to 63200 states and 66998 transitions. [2018-10-26 21:56:30,149 INFO L78 Accepts]: Start accepts. Automaton has 63200 states and 66998 transitions. Word has length 812 [2018-10-26 21:56:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:56:30,150 INFO L481 AbstractCegarLoop]: Abstraction has 63200 states and 66998 transitions. [2018-10-26 21:56:30,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:56:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 63200 states and 66998 transitions. [2018-10-26 21:56:30,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2018-10-26 21:56:30,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:56:30,189 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 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] [2018-10-26 21:56:30,190 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:56:30,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:56:30,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1010400958, now seen corresponding path program 1 times [2018-10-26 21:56:30,190 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:56:30,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:56:30,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:56:30,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:56:30,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:56:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:56:31,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2018-10-26 21:56:31,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:56:31,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:56:31,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:56:31,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:56:31,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:56:31,164 INFO L87 Difference]: Start difference. First operand 63200 states and 66998 transitions. Second operand 3 states. [2018-10-26 21:56:34,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:56:34,677 INFO L93 Difference]: Finished difference Result 129808 states and 137597 transitions. [2018-10-26 21:56:34,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:56:34,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 885 [2018-10-26 21:56:34,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:56:34,740 INFO L225 Difference]: With dead ends: 129808 [2018-10-26 21:56:34,740 INFO L226 Difference]: Without dead ends: 66607 [2018-10-26 21:56:34,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:56:34,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66607 states. [2018-10-26 21:56:36,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66607 to 57227. [2018-10-26 21:56:36,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57227 states. [2018-10-26 21:56:36,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57227 states to 57227 states and 60407 transitions. [2018-10-26 21:56:36,175 INFO L78 Accepts]: Start accepts. Automaton has 57227 states and 60407 transitions. Word has length 885 [2018-10-26 21:56:36,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:56:36,176 INFO L481 AbstractCegarLoop]: Abstraction has 57227 states and 60407 transitions. [2018-10-26 21:56:36,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:56:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 57227 states and 60407 transitions. [2018-10-26 21:56:36,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 943 [2018-10-26 21:56:36,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:56:36,213 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:56:36,214 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:56:36,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:56:36,214 INFO L82 PathProgramCache]: Analyzing trace with hash 99465613, now seen corresponding path program 1 times [2018-10-26 21:56:36,214 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:56:36,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:56:36,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:56:36,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:56:36,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:56:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:56:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1524 backedges. 909 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2018-10-26 21:56:36,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:56:36,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:56:36,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:56:36,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:56:36,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:56:36,841 INFO L87 Difference]: Start difference. First operand 57227 states and 60407 transitions. Second operand 3 states. Received shutdown request... [2018-10-26 21:56:42,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:56:42,899 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:56:42,905 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:56:42,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:56:42 BoogieIcfgContainer [2018-10-26 21:56:42,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:56:42,906 INFO L168 Benchmark]: Toolchain (without parser) took 241286.93 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 969.3 MB. Max. memory is 7.1 GB. [2018-10-26 21:56:42,907 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-26 21:56:42,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1580.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-10-26 21:56:42,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 571.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.9 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2018-10-26 21:56:42,909 INFO L168 Benchmark]: Boogie Preprocessor took 377.38 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2018-10-26 21:56:42,910 INFO L168 Benchmark]: RCFGBuilder took 10688.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 487.6 MB). Peak memory consumption was 487.6 MB. Max. memory is 7.1 GB. [2018-10-26 21:56:42,911 INFO L168 Benchmark]: TraceAbstraction took 228062.36 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -952.8 MB). Peak memory consumption was 450.2 MB. Max. memory is 7.1 GB. [2018-10-26 21:56:42,916 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1580.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 571.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.9 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 377.38 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10688.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 487.6 MB). Peak memory consumption was 487.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228062.36 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -952.8 MB). Peak memory consumption was 450.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 161). Cancelled while BasicCegarLoop was constructing difference of abstraction (57227states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (100524 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 227.9s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 201.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7264 SDtfs, 18206 SDslu, 3331 SDs, 0 SdLazy, 53288 SolverSat, 7497 SolverUnsat, 29 SolverUnknown, 0 SolverNotchecked, 180.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1944 GetRequests, 1888 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64062occurred 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: 8.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 80453 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 8672 NumberOfCodeBlocks, 8672 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 8653 ConstructedInterpolants, 242 QuantifiedInterpolants, 18490525 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2347 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 19 InterpolantComputations, 12 PerfectInterpolantSequences, 8209/9543 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown