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/Problem13_label24_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:04:57,769 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:04:57,773 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:04:57,785 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:04:57,786 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:04:57,787 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:04:57,788 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:04:57,792 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:04:57,794 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:04:57,799 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:04:57,800 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:04:57,800 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:04:57,801 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:04:57,805 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:04:57,806 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:04:57,806 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:04:57,809 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:04:57,811 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:04:57,816 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:04:57,820 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:04:57,821 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:04:57,823 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:04:57,831 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 18:04:57,844 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:04:57,866 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:04:57,866 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:04:57,867 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:04:57,867 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:04:57,868 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:04:57,868 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:04:57,868 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:04:57,868 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:04:57,869 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:04:57,870 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:04:57,870 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:04:57,871 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:04:57,871 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:04:57,871 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:04:57,871 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:04:57,871 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:04:57,872 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:04:57,872 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:04:57,872 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:04:57,872 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:04:57,872 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:04:57,873 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:04:57,873 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:04:57,873 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:04:57,873 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:04:57,873 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:04:57,874 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:04:57,875 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:04:57,943 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:04:57,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:04:57,962 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:04:57,964 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:04:57,964 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:04:57,965 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label24_false-unreach-call.c [2018-10-23 18:04:58,024 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9568b98e4/ea0d3ca20eca4fef84608aec8695841c/FLAG7d1d7526f [2018-10-23 18:04:58,800 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:04:58,801 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label24_false-unreach-call.c [2018-10-23 18:04:58,843 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9568b98e4/ea0d3ca20eca4fef84608aec8695841c/FLAG7d1d7526f [2018-10-23 18:04:58,864 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9568b98e4/ea0d3ca20eca4fef84608aec8695841c [2018-10-23 18:04:58,877 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:04:58,879 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:04:58,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:04:58,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:04:58,885 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:04:58,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:04:58" (1/1) ... [2018-10-23 18:04:58,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c366f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:04:58, skipping insertion in model container [2018-10-23 18:04:58,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:04:58" (1/1) ... [2018-10-23 18:04:58,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:04:59,085 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:05:00,476 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:05:00,481 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:05:01,220 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:05:01,255 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:05:01,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:01 WrapperNode [2018-10-23 18:05:01,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:05:01,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:05:01,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:05:01,257 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:05:01,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:01" (1/1) ... [2018-10-23 18:05:01,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:01" (1/1) ... [2018-10-23 18:05:02,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:05:02,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:05:02,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:05:02,056 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:05:02,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:01" (1/1) ... [2018-10-23 18:05:02,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:01" (1/1) ... [2018-10-23 18:05:02,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:01" (1/1) ... [2018-10-23 18:05:02,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:01" (1/1) ... [2018-10-23 18:05:02,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:01" (1/1) ... [2018-10-23 18:05:02,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:01" (1/1) ... [2018-10-23 18:05:02,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:01" (1/1) ... [2018-10-23 18:05:02,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:05:02,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:05:02,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:05:02,476 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:05:02,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:05:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:05:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:05:02,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:05:14,881 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:05:14,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:05:14 BoogieIcfgContainer [2018-10-23 18:05:14,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:05:14,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:05:14,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:05:14,887 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:05:14,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:04:58" (1/3) ... [2018-10-23 18:05:14,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ecfae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:05:14, skipping insertion in model container [2018-10-23 18:05:14,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:01" (2/3) ... [2018-10-23 18:05:14,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ecfae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:05:14, skipping insertion in model container [2018-10-23 18:05:14,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:05:14" (3/3) ... [2018-10-23 18:05:14,891 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label24_false-unreach-call.c [2018-10-23 18:05:14,901 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:05:14,911 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:05:14,925 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:05:14,974 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:05:14,975 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:05:14,975 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:05:14,975 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:05:14,975 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:05:14,975 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:05:14,975 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:05:14,975 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:05:14,976 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:05:15,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 18:05:15,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-23 18:05:15,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:05:15,038 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] [2018-10-23 18:05:15,042 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:05:15,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:05:15,048 INFO L82 PathProgramCache]: Analyzing trace with hash 808956810, now seen corresponding path program 1 times [2018-10-23 18:05:15,050 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:05:15,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:05:15,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:15,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:15,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:05:15,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:05:15,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:05:15,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:05:15,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:05:15,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:05:15,516 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 18:05:34,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:05:34,320 INFO L93 Difference]: Finished difference Result 3863 states and 7261 transitions. [2018-10-23 18:05:34,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:05:34,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-23 18:05:34,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:05:34,368 INFO L225 Difference]: With dead ends: 3863 [2018-10-23 18:05:34,369 INFO L226 Difference]: Without dead ends: 2757 [2018-10-23 18:05:34,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:05:34,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-10-23 18:05:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2736. [2018-10-23 18:05:34,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-10-23 18:05:34,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4486 transitions. [2018-10-23 18:05:34,553 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4486 transitions. Word has length 30 [2018-10-23 18:05:34,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:05:34,553 INFO L481 AbstractCegarLoop]: Abstraction has 2736 states and 4486 transitions. [2018-10-23 18:05:34,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:05:34,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4486 transitions. [2018-10-23 18:05:34,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-23 18:05:34,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:05:34,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:05:34,565 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:05:34,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:05:34,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1033901677, now seen corresponding path program 1 times [2018-10-23 18:05:34,565 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:05:34,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:05:34,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:34,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:34,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:05:34,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:05:34,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:05:34,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:05:34,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:05:34,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:05:34,887 INFO L87 Difference]: Start difference. First operand 2736 states and 4486 transitions. Second operand 4 states. [2018-10-23 18:05:47,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:05:47,692 INFO L93 Difference]: Finished difference Result 10268 states and 17048 transitions. [2018-10-23 18:05:47,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:05:47,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2018-10-23 18:05:47,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:05:47,742 INFO L225 Difference]: With dead ends: 10268 [2018-10-23 18:05:47,742 INFO L226 Difference]: Without dead ends: 7534 [2018-10-23 18:05:47,748 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 [2018-10-23 18:05:47,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7534 states. [2018-10-23 18:05:47,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7534 to 7528. [2018-10-23 18:05:47,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7528 states. [2018-10-23 18:05:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 11328 transitions. [2018-10-23 18:05:47,905 INFO L78 Accepts]: Start accepts. Automaton has 7528 states and 11328 transitions. Word has length 117 [2018-10-23 18:05:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:05:47,906 INFO L481 AbstractCegarLoop]: Abstraction has 7528 states and 11328 transitions. [2018-10-23 18:05:47,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:05:47,906 INFO L276 IsEmpty]: Start isEmpty. Operand 7528 states and 11328 transitions. [2018-10-23 18:05:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-23 18:05:47,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:05:47,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:05:47,915 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:05:47,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:05:47,915 INFO L82 PathProgramCache]: Analyzing trace with hash -323945332, now seen corresponding path program 1 times [2018-10-23 18:05:47,916 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:05:47,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:05:47,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:47,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:47,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:05:48,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:05:48,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:05:48,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:05:48,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:05:48,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:05:48,357 INFO L87 Difference]: Start difference. First operand 7528 states and 11328 transitions. Second operand 5 states. [2018-10-23 18:06:10,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:10,144 INFO L93 Difference]: Finished difference Result 36654 states and 55493 transitions. [2018-10-23 18:06:10,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:06:10,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2018-10-23 18:06:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:10,250 INFO L225 Difference]: With dead ends: 36654 [2018-10-23 18:06:10,250 INFO L226 Difference]: Without dead ends: 29128 [2018-10-23 18:06:10,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:06:10,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29128 states. [2018-10-23 18:06:10,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29128 to 28970. [2018-10-23 18:06:10,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28970 states. [2018-10-23 18:06:10,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28970 states to 28970 states and 40615 transitions. [2018-10-23 18:06:10,738 INFO L78 Accepts]: Start accepts. Automaton has 28970 states and 40615 transitions. Word has length 127 [2018-10-23 18:06:10,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:06:10,738 INFO L481 AbstractCegarLoop]: Abstraction has 28970 states and 40615 transitions. [2018-10-23 18:06:10,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:06:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 28970 states and 40615 transitions. [2018-10-23 18:06:10,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-23 18:06:10,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:06:10,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:06:10,743 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:06:10,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:06:10,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1565563409, now seen corresponding path program 1 times [2018-10-23 18:06:10,744 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:06:10,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:06:10,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:10,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:10,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:06:11,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:06:11,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:06:11,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:06:11,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:06:11,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:06:11,140 INFO L87 Difference]: Start difference. First operand 28970 states and 40615 transitions. Second operand 4 states. [2018-10-23 18:06:23,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:23,994 INFO L93 Difference]: Finished difference Result 86368 states and 118574 transitions. [2018-10-23 18:06:23,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:06:23,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2018-10-23 18:06:23,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:24,090 INFO L225 Difference]: With dead ends: 86368 [2018-10-23 18:06:24,091 INFO L226 Difference]: Without dead ends: 57400 [2018-10-23 18:06:24,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:06:24,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57400 states. [2018-10-23 18:06:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57400 to 47880. [2018-10-23 18:06:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47880 states. [2018-10-23 18:06:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47880 states to 47880 states and 61736 transitions. [2018-10-23 18:06:24,804 INFO L78 Accepts]: Start accepts. Automaton has 47880 states and 61736 transitions. Word has length 147 [2018-10-23 18:06:24,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:06:24,805 INFO L481 AbstractCegarLoop]: Abstraction has 47880 states and 61736 transitions. [2018-10-23 18:06:24,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:06:24,805 INFO L276 IsEmpty]: Start isEmpty. Operand 47880 states and 61736 transitions. [2018-10-23 18:06:24,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-23 18:06:24,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:06:24,810 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:06:24,810 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:06:24,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:06:24,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1923597236, now seen corresponding path program 1 times [2018-10-23 18:06:24,811 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:06:24,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:06:24,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:24,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:24,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:25,110 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 18:06:25,233 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 18:06:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-23 18:06:25,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:06:25,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:06:25,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:06:25,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:06:25,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:06:25,339 INFO L87 Difference]: Start difference. First operand 47880 states and 61736 transitions. Second operand 5 states. [2018-10-23 18:06:42,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:42,351 INFO L93 Difference]: Finished difference Result 143030 states and 183909 transitions. [2018-10-23 18:06:42,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:06:42,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2018-10-23 18:06:42,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:42,550 INFO L225 Difference]: With dead ends: 143030 [2018-10-23 18:06:42,551 INFO L226 Difference]: Without dead ends: 95152 [2018-10-23 18:06:42,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:06:42,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95152 states. [2018-10-23 18:06:43,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95152 to 94360. [2018-10-23 18:06:43,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94360 states. [2018-10-23 18:06:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94360 states to 94360 states and 115529 transitions. [2018-10-23 18:06:43,883 INFO L78 Accepts]: Start accepts. Automaton has 94360 states and 115529 transitions. Word has length 176 [2018-10-23 18:06:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:06:43,884 INFO L481 AbstractCegarLoop]: Abstraction has 94360 states and 115529 transitions. [2018-10-23 18:06:43,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:06:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 94360 states and 115529 transitions. [2018-10-23 18:06:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-23 18:06:43,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:06:43,893 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:06:43,893 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:06:43,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:06:43,893 INFO L82 PathProgramCache]: Analyzing trace with hash -465057532, now seen corresponding path program 1 times [2018-10-23 18:06:43,894 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:06:43,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:06:43,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:43,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:43,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:44,881 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 18:06:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:06:45,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:06:45,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:06:45,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:06:45,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:06:45,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:06:45,009 INFO L87 Difference]: Start difference. First operand 94360 states and 115529 transitions. Second operand 4 states. [2018-10-23 18:06:57,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:57,827 INFO L93 Difference]: Finished difference Result 266715 states and 330775 transitions. [2018-10-23 18:06:57,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:06:57,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 273 [2018-10-23 18:06:57,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:58,016 INFO L225 Difference]: With dead ends: 266715 [2018-10-23 18:06:58,016 INFO L226 Difference]: Without dead ends: 139949 [2018-10-23 18:06:58,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:06:58,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139949 states. [2018-10-23 18:06:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139949 to 132063. [2018-10-23 18:06:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132063 states. [2018-10-23 18:07:00,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132063 states to 132063 states and 150754 transitions. [2018-10-23 18:07:00,038 INFO L78 Accepts]: Start accepts. Automaton has 132063 states and 150754 transitions. Word has length 273 [2018-10-23 18:07:00,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:00,039 INFO L481 AbstractCegarLoop]: Abstraction has 132063 states and 150754 transitions. [2018-10-23 18:07:00,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:07:00,039 INFO L276 IsEmpty]: Start isEmpty. Operand 132063 states and 150754 transitions. [2018-10-23 18:07:00,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-10-23 18:07:00,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:00,048 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:07:00,048 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:00,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:00,049 INFO L82 PathProgramCache]: Analyzing trace with hash -2109416440, now seen corresponding path program 1 times [2018-10-23 18:07:00,049 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:00,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:00,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:00,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:00,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-23 18:07:00,408 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:00,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:07:00,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:07:00,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:07:00,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:00,410 INFO L87 Difference]: Start difference. First operand 132063 states and 150754 transitions. Second operand 4 states. [2018-10-23 18:07:11,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:11,437 INFO L93 Difference]: Finished difference Result 300414 states and 344422 transitions. [2018-10-23 18:07:11,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:07:11,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2018-10-23 18:07:11,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:11,672 INFO L225 Difference]: With dead ends: 300414 [2018-10-23 18:07:11,673 INFO L226 Difference]: Without dead ends: 169141 [2018-10-23 18:07:11,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:11,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169141 states. [2018-10-23 18:07:13,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169141 to 164368. [2018-10-23 18:07:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164368 states. [2018-10-23 18:07:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164368 states to 164368 states and 182550 transitions. [2018-10-23 18:07:13,334 INFO L78 Accepts]: Start accepts. Automaton has 164368 states and 182550 transitions. Word has length 332 [2018-10-23 18:07:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:13,335 INFO L481 AbstractCegarLoop]: Abstraction has 164368 states and 182550 transitions. [2018-10-23 18:07:13,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:07:13,335 INFO L276 IsEmpty]: Start isEmpty. Operand 164368 states and 182550 transitions. [2018-10-23 18:07:13,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-23 18:07:13,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:13,347 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:07:13,347 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:13,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:13,347 INFO L82 PathProgramCache]: Analyzing trace with hash -127785171, now seen corresponding path program 1 times [2018-10-23 18:07:13,348 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:13,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:13,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:13,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:13,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-23 18:07:13,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:13,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:07:13,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:07:13,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:07:13,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:07:13,795 INFO L87 Difference]: Start difference. First operand 164368 states and 182550 transitions. Second operand 3 states. [2018-10-23 18:07:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:20,505 INFO L93 Difference]: Finished difference Result 327944 states and 364306 transitions. [2018-10-23 18:07:20,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:07:20,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 408 [2018-10-23 18:07:20,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:20,697 INFO L225 Difference]: With dead ends: 327944 [2018-10-23 18:07:20,697 INFO L226 Difference]: Without dead ends: 164366 [2018-10-23 18:07:20,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:07:20,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164366 states. [2018-10-23 18:07:22,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164366 to 162001. [2018-10-23 18:07:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162001 states. [2018-10-23 18:07:22,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162001 states to 162001 states and 175363 transitions. [2018-10-23 18:07:22,230 INFO L78 Accepts]: Start accepts. Automaton has 162001 states and 175363 transitions. Word has length 408 [2018-10-23 18:07:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:22,231 INFO L481 AbstractCegarLoop]: Abstraction has 162001 states and 175363 transitions. [2018-10-23 18:07:22,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:07:22,231 INFO L276 IsEmpty]: Start isEmpty. Operand 162001 states and 175363 transitions. [2018-10-23 18:07:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2018-10-23 18:07:22,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:22,259 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:07:22,259 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:22,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:22,260 INFO L82 PathProgramCache]: Analyzing trace with hash -566731383, now seen corresponding path program 1 times [2018-10-23 18:07:22,260 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:22,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:22,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:22,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:22,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:22,836 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 3 [2018-10-23 18:07:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-23 18:07:23,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:23,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:07:23,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:07:23,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:07:23,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:23,835 INFO L87 Difference]: Start difference. First operand 162001 states and 175363 transitions. Second operand 4 states. [2018-10-23 18:07:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:31,824 INFO L93 Difference]: Finished difference Result 328717 states and 356673 transitions. [2018-10-23 18:07:31,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:07:31,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 559 [2018-10-23 18:07:31,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:32,000 INFO L225 Difference]: With dead ends: 328717 [2018-10-23 18:07:32,000 INFO L226 Difference]: Without dead ends: 167506 [2018-10-23 18:07:32,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:32,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167506 states. [2018-10-23 18:07:34,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167506 to 165929. [2018-10-23 18:07:34,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165929 states. [2018-10-23 18:07:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165929 states to 165929 states and 179061 transitions. [2018-10-23 18:07:34,212 INFO L78 Accepts]: Start accepts. Automaton has 165929 states and 179061 transitions. Word has length 559 [2018-10-23 18:07:34,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:34,213 INFO L481 AbstractCegarLoop]: Abstraction has 165929 states and 179061 transitions. [2018-10-23 18:07:34,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:07:34,213 INFO L276 IsEmpty]: Start isEmpty. Operand 165929 states and 179061 transitions. [2018-10-23 18:07:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-10-23 18:07:34,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:34,238 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:07:34,238 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:34,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:34,239 INFO L82 PathProgramCache]: Analyzing trace with hash -285119364, now seen corresponding path program 1 times [2018-10-23 18:07:34,239 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:34,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:34,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:34,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:34,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 718 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-10-23 18:07:34,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:34,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:07:34,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:07:34,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:07:34,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:34,922 INFO L87 Difference]: Start difference. First operand 165929 states and 179061 transitions. Second operand 4 states. [2018-10-23 18:07:47,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:47,459 INFO L93 Difference]: Finished difference Result 398960 states and 430186 transitions. [2018-10-23 18:07:47,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:07:47,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 583 [2018-10-23 18:07:47,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:47,811 INFO L225 Difference]: With dead ends: 398960 [2018-10-23 18:07:47,811 INFO L226 Difference]: Without dead ends: 233821 [2018-10-23 18:07:47,945 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 [2018-10-23 18:07:48,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233821 states. [2018-10-23 18:07:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233821 to 225831. [2018-10-23 18:07:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225831 states. [2018-10-23 18:07:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225831 states to 225831 states and 242862 transitions. [2018-10-23 18:07:51,746 INFO L78 Accepts]: Start accepts. Automaton has 225831 states and 242862 transitions. Word has length 583 [2018-10-23 18:07:51,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:51,747 INFO L481 AbstractCegarLoop]: Abstraction has 225831 states and 242862 transitions. [2018-10-23 18:07:51,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:07:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 225831 states and 242862 transitions. [2018-10-23 18:07:51,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2018-10-23 18:07:51,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:51,767 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:07:51,767 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:51,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:51,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1305774152, now seen corresponding path program 1 times [2018-10-23 18:07:51,768 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:51,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:51,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:51,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:51,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2018-10-23 18:07:52,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:52,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:07:52,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:07:52,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:07:52,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:52,304 INFO L87 Difference]: Start difference. First operand 225831 states and 242862 transitions. Second operand 4 states. [2018-10-23 18:08:03,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:03,425 INFO L93 Difference]: Finished difference Result 481598 states and 518636 transitions. [2018-10-23 18:08:03,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:08:03,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 616 [2018-10-23 18:08:03,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:03,799 INFO L225 Difference]: With dead ends: 481598 [2018-10-23 18:08:03,799 INFO L226 Difference]: Without dead ends: 256557 [2018-10-23 18:08:03,935 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:04,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256557 states. [2018-10-23 18:08:07,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256557 to 248652. [2018-10-23 18:08:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248652 states. [2018-10-23 18:08:07,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248652 states to 248652 states and 263857 transitions. [2018-10-23 18:08:07,336 INFO L78 Accepts]: Start accepts. Automaton has 248652 states and 263857 transitions. Word has length 616 [2018-10-23 18:08:07,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:07,337 INFO L481 AbstractCegarLoop]: Abstraction has 248652 states and 263857 transitions. [2018-10-23 18:08:07,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:08:07,337 INFO L276 IsEmpty]: Start isEmpty. Operand 248652 states and 263857 transitions. [2018-10-23 18:08:07,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2018-10-23 18:08:07,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:07,381 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 18:08:07,382 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:07,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:07,382 INFO L82 PathProgramCache]: Analyzing trace with hash 527952713, now seen corresponding path program 1 times [2018-10-23 18:08:07,382 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:07,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:07,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:07,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:07,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1634 backedges. 1175 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2018-10-23 18:08:09,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:09,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:08:09,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:08:09,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:08:09,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:09,132 INFO L87 Difference]: Start difference. First operand 248652 states and 263857 transitions. Second operand 4 states. [2018-10-23 18:08:21,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:21,370 INFO L93 Difference]: Finished difference Result 500443 states and 530809 transitions. [2018-10-23 18:08:21,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:08:21,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 727 [2018-10-23 18:08:21,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:21,689 INFO L225 Difference]: With dead ends: 500443 [2018-10-23 18:08:21,689 INFO L226 Difference]: Without dead ends: 250213 [2018-10-23 18:08:21,803 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 [2018-10-23 18:08:21,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250213 states. [2018-10-23 18:08:24,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250213 to 247837. [2018-10-23 18:08:24,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247837 states. [2018-10-23 18:08:24,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247837 states to 247837 states and 260382 transitions. [2018-10-23 18:08:24,732 INFO L78 Accepts]: Start accepts. Automaton has 247837 states and 260382 transitions. Word has length 727 [2018-10-23 18:08:24,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:24,733 INFO L481 AbstractCegarLoop]: Abstraction has 247837 states and 260382 transitions. [2018-10-23 18:08:24,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:08:24,733 INFO L276 IsEmpty]: Start isEmpty. Operand 247837 states and 260382 transitions. [2018-10-23 18:08:24,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2018-10-23 18:08:24,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:24,771 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:08:24,771 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:24,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:24,771 INFO L82 PathProgramCache]: Analyzing trace with hash -204234439, now seen corresponding path program 1 times [2018-10-23 18:08:24,772 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:24,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:24,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:24,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:24,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:31,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 1275 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2018-10-23 18:08:31,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:31,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:08:31,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:08:31,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:08:31,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:08:31,085 INFO L87 Difference]: Start difference. First operand 247837 states and 260382 transitions. Second operand 3 states. [2018-10-23 18:08:39,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:39,181 INFO L93 Difference]: Finished difference Result 492507 states and 517722 transitions. [2018-10-23 18:08:39,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:08:39,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 743 [2018-10-23 18:08:39,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:39,434 INFO L225 Difference]: With dead ends: 492507 [2018-10-23 18:08:39,434 INFO L226 Difference]: Without dead ends: 245460 [2018-10-23 18:08:39,505 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 [2018-10-23 18:08:39,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245460 states. [2018-10-23 18:08:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245460 to 243092. [2018-10-23 18:08:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243092 states. [2018-10-23 18:08:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243092 states to 243092 states and 254063 transitions. [2018-10-23 18:08:42,580 INFO L78 Accepts]: Start accepts. Automaton has 243092 states and 254063 transitions. Word has length 743 [2018-10-23 18:08:42,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:42,580 INFO L481 AbstractCegarLoop]: Abstraction has 243092 states and 254063 transitions. [2018-10-23 18:08:42,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:08:42,580 INFO L276 IsEmpty]: Start isEmpty. Operand 243092 states and 254063 transitions. [2018-10-23 18:08:42,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2018-10-23 18:08:42,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:42,617 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:08:42,618 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:42,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:42,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1298063105, now seen corresponding path program 1 times [2018-10-23 18:08:42,618 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:42,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:42,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:42,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:42,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:43,304 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 18:08:44,230 WARN L179 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 18:08:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 1267 proven. 21 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-10-23 18:08:45,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:08:45,771 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:08:45,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:46,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:08:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 1342 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-10-23 18:08:46,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:08:46,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2018-10-23 18:08:46,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 18:08:46,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 18:08:46,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:08:46,887 INFO L87 Difference]: Start difference. First operand 243092 states and 254063 transitions. Second operand 8 states. Received shutdown request... [2018-10-23 18:08:47,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:08:47,212 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:08:47,222 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:08:47,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:08:47 BoogieIcfgContainer [2018-10-23 18:08:47,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:08:47,224 INFO L168 Benchmark]: Toolchain (without parser) took 228345.49 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-23 18:08:47,227 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:08:47,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2375.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 245.7 MB). Peak memory consumption was 245.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:08:47,228 INFO L168 Benchmark]: Boogie Procedure Inliner took 798.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:08:47,229 INFO L168 Benchmark]: Boogie Preprocessor took 420.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.4 MB). Peak memory consumption was 69.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:08:47,231 INFO L168 Benchmark]: RCFGBuilder took 12406.39 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 247.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 8.8 MB). Peak memory consumption was 602.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:08:47,232 INFO L168 Benchmark]: TraceAbstraction took 212339.55 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -101.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-23 18:08:47,242 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2375.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 245.7 MB). Peak memory consumption was 245.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 798.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 420.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.4 MB). Peak memory consumption was 69.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12406.39 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 247.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 8.8 MB). Peak memory consumption was 602.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212339.55 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -101.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 99). Cancelled while BasicCegarLoop was constructing difference of abstraction (243092states) and FLOYD_HOARE automaton (currently 3 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (14 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 212.2s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 169.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11205 SDtfs, 25240 SDslu, 3294 SDs, 0 SdLazy, 60981 SolverSat, 15310 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 134.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 846 GetRequests, 796 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248652occurred 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: 22.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 47737 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 6384 NumberOfCodeBlocks, 6384 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 6369 ConstructedInterpolants, 0 QuantifiedInterpolants, 10051755 SizeOfPredicates, 0 NumberOfNonLiveVariables, 975 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 10636/10657 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown