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/Problem03_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:49:54,854 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:49:54,856 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:49:54,868 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:49:54,869 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:49:54,870 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:49:54,871 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:49:54,873 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:49:54,875 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:49:54,880 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:49:54,881 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:49:54,881 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:49:54,884 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:49:54,885 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:49:54,886 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:49:54,889 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:49:54,890 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:49:54,895 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:49:54,898 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:49:54,901 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:49:54,902 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:49:54,907 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:49:54,913 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 18:49:54,921 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 18:49:54,936 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:49:54,936 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:49:54,937 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:49:54,937 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:49:54,938 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:49:54,938 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:49:54,938 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:49:54,939 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:49:54,939 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:49:54,939 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:49:54,939 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:49:54,940 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:49:54,940 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:49:54,940 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:49:54,940 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:49:54,940 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:49:54,941 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:49:54,941 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:49:54,941 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:49:54,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:49:54,941 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:49:54,942 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:49:54,942 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:49:54,942 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:49:54,942 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:49:54,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:49:54,943 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:49:54,943 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:49:54,989 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:49:55,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:49:55,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:49:55,008 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:49:55,008 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:49:55,009 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label06_true-unreach-call.c [2018-10-23 18:49:55,074 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fe634c915/ce14d5fab4cf468ba1840ebd16b9a064/FLAG11e8a6f9d [2018-10-23 18:49:55,773 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:49:55,774 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label06_true-unreach-call.c [2018-10-23 18:49:55,793 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fe634c915/ce14d5fab4cf468ba1840ebd16b9a064/FLAG11e8a6f9d [2018-10-23 18:49:55,809 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fe634c915/ce14d5fab4cf468ba1840ebd16b9a064 [2018-10-23 18:49:55,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:49:55,822 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:49:55,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:49:55,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:49:55,827 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:49:55,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:49:55" (1/1) ... [2018-10-23 18:49:55,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43be0e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:49:55, skipping insertion in model container [2018-10-23 18:49:55,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:49:55" (1/1) ... [2018-10-23 18:49:55,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:49:55,936 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:49:56,615 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:49:56,621 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:49:56,871 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:49:56,893 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:49:56,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:49:56 WrapperNode [2018-10-23 18:49:56,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:49:56,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:49:56,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:49:56,895 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:49:56,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:49:56" (1/1) ... [2018-10-23 18:49:56,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:49:56" (1/1) ... [2018-10-23 18:49:57,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:49:57,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:49:57,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:49:57,200 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:49:57,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:49:56" (1/1) ... [2018-10-23 18:49:57,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:49:56" (1/1) ... [2018-10-23 18:49:57,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:49:56" (1/1) ... [2018-10-23 18:49:57,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:49:56" (1/1) ... [2018-10-23 18:49:57,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:49:56" (1/1) ... [2018-10-23 18:49:57,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:49:56" (1/1) ... [2018-10-23 18:49:57,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:49:56" (1/1) ... [2018-10-23 18:49:57,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:49:57,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:49:57,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:49:57,341 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:49:57,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:49:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:49:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:49:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:49:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:50:03,410 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:50:03,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:50:03 BoogieIcfgContainer [2018-10-23 18:50:03,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:50:03,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:50:03,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:50:03,418 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:50:03,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:49:55" (1/3) ... [2018-10-23 18:50:03,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a2a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:50:03, skipping insertion in model container [2018-10-23 18:50:03,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:49:56" (2/3) ... [2018-10-23 18:50:03,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a2a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:50:03, skipping insertion in model container [2018-10-23 18:50:03,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:50:03" (3/3) ... [2018-10-23 18:50:03,423 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label06_true-unreach-call.c [2018-10-23 18:50:03,434 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:50:03,446 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:50:03,464 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:50:03,506 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:50:03,507 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:50:03,508 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:50:03,508 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:50:03,508 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:50:03,508 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:50:03,508 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:50:03,508 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:50:03,509 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:50:03,537 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2018-10-23 18:50:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-23 18:50:03,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:03,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:03,562 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:03,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:03,567 INFO L82 PathProgramCache]: Analyzing trace with hash -696038692, now seen corresponding path program 1 times [2018-10-23 18:50:03,569 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:03,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:03,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:03,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:03,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:04,496 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 18:50:04,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:50:04,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:50:04,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:50:04,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:50:04,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:50:04,524 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 4 states. [2018-10-23 18:50:08,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:08,017 INFO L93 Difference]: Finished difference Result 1027 states and 1865 transitions. [2018-10-23 18:50:08,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:50:08,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2018-10-23 18:50:08,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:08,042 INFO L225 Difference]: With dead ends: 1027 [2018-10-23 18:50:08,042 INFO L226 Difference]: Without dead ends: 717 [2018-10-23 18:50:08,047 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 18:50:08,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2018-10-23 18:50:08,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 715. [2018-10-23 18:50:08,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2018-10-23 18:50:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1145 transitions. [2018-10-23 18:50:08,169 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1145 transitions. Word has length 170 [2018-10-23 18:50:08,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:50:08,170 INFO L481 AbstractCegarLoop]: Abstraction has 715 states and 1145 transitions. [2018-10-23 18:50:08,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:50:08,171 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1145 transitions. [2018-10-23 18:50:08,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-23 18:50:08,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:08,179 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:50:08,179 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:08,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:08,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1090071323, now seen corresponding path program 1 times [2018-10-23 18:50:08,180 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:08,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:08,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:08,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:08,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:50:08,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:50:08,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:50:08,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:50:08,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:50:08,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:50:08,318 INFO L87 Difference]: Start difference. First operand 715 states and 1145 transitions. Second operand 3 states. [2018-10-23 18:50:10,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:10,736 INFO L93 Difference]: Finished difference Result 2058 states and 3347 transitions. [2018-10-23 18:50:10,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:50:10,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2018-10-23 18:50:10,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:10,745 INFO L225 Difference]: With dead ends: 2058 [2018-10-23 18:50:10,745 INFO L226 Difference]: Without dead ends: 1345 [2018-10-23 18:50:10,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:50:10,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2018-10-23 18:50:10,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1331. [2018-10-23 18:50:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2018-10-23 18:50:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2076 transitions. [2018-10-23 18:50:10,790 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2076 transitions. Word has length 179 [2018-10-23 18:50:10,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:50:10,791 INFO L481 AbstractCegarLoop]: Abstraction has 1331 states and 2076 transitions. [2018-10-23 18:50:10,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:50:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2076 transitions. [2018-10-23 18:50:10,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-23 18:50:10,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:10,797 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2018-10-23 18:50:10,798 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:10,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:10,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1031939488, now seen corresponding path program 1 times [2018-10-23 18:50:10,798 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:10,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:10,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:10,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:10,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-23 18:50:10,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:50:10,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:50:10,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:50:10,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:50:10,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:50:10,943 INFO L87 Difference]: Start difference. First operand 1331 states and 2076 transitions. Second operand 3 states. [2018-10-23 18:50:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:13,953 INFO L93 Difference]: Finished difference Result 3977 states and 6209 transitions. [2018-10-23 18:50:13,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:50:13,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2018-10-23 18:50:13,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:13,968 INFO L225 Difference]: With dead ends: 3977 [2018-10-23 18:50:13,968 INFO L226 Difference]: Without dead ends: 2648 [2018-10-23 18:50:13,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:50:13,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2018-10-23 18:50:14,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2645. [2018-10-23 18:50:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2645 states. [2018-10-23 18:50:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 4120 transitions. [2018-10-23 18:50:14,036 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 4120 transitions. Word has length 193 [2018-10-23 18:50:14,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:50:14,036 INFO L481 AbstractCegarLoop]: Abstraction has 2645 states and 4120 transitions. [2018-10-23 18:50:14,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:50:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 4120 transitions. [2018-10-23 18:50:14,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-23 18:50:14,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:14,043 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:14,043 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:14,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:14,043 INFO L82 PathProgramCache]: Analyzing trace with hash 133312332, now seen corresponding path program 1 times [2018-10-23 18:50:14,043 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:14,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:14,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:14,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:14,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-10-23 18:50:14,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:50:14,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:50:14,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:50:14,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:50:14,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:50:14,198 INFO L87 Difference]: Start difference. First operand 2645 states and 4120 transitions. Second operand 3 states. [2018-10-23 18:50:15,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:15,117 INFO L93 Difference]: Finished difference Result 5250 states and 8186 transitions. [2018-10-23 18:50:15,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:50:15,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2018-10-23 18:50:15,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:15,132 INFO L225 Difference]: With dead ends: 5250 [2018-10-23 18:50:15,132 INFO L226 Difference]: Without dead ends: 2607 [2018-10-23 18:50:15,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:50:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2018-10-23 18:50:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2607. [2018-10-23 18:50:15,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2607 states. [2018-10-23 18:50:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2607 states to 2607 states and 3992 transitions. [2018-10-23 18:50:15,192 INFO L78 Accepts]: Start accepts. Automaton has 2607 states and 3992 transitions. Word has length 201 [2018-10-23 18:50:15,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:50:15,192 INFO L481 AbstractCegarLoop]: Abstraction has 2607 states and 3992 transitions. [2018-10-23 18:50:15,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:50:15,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2607 states and 3992 transitions. [2018-10-23 18:50:15,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-23 18:50:15,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:15,198 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:15,198 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:15,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:15,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1347645992, now seen corresponding path program 1 times [2018-10-23 18:50:15,199 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:15,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:15,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:15,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:15,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:15,717 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 18:50:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:50:15,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:50:15,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:50:15,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:50:15,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:50:15,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:50:15,771 INFO L87 Difference]: Start difference. First operand 2607 states and 3992 transitions. Second operand 5 states. [2018-10-23 18:50:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:20,142 INFO L93 Difference]: Finished difference Result 6279 states and 9778 transitions. [2018-10-23 18:50:20,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:50:20,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2018-10-23 18:50:20,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:20,163 INFO L225 Difference]: With dead ends: 6279 [2018-10-23 18:50:20,164 INFO L226 Difference]: Without dead ends: 3674 [2018-10-23 18:50:20,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:50:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2018-10-23 18:50:20,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3015. [2018-10-23 18:50:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3015 states. [2018-10-23 18:50:20,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 4612 transitions. [2018-10-23 18:50:20,229 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 4612 transitions. Word has length 210 [2018-10-23 18:50:20,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:50:20,230 INFO L481 AbstractCegarLoop]: Abstraction has 3015 states and 4612 transitions. [2018-10-23 18:50:20,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:50:20,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 4612 transitions. [2018-10-23 18:50:20,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-23 18:50:20,236 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:20,237 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 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] [2018-10-23 18:50:20,237 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:20,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:20,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1621362332, now seen corresponding path program 1 times [2018-10-23 18:50:20,238 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:20,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:20,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:20,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:20,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 62 proven. 10 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-10-23 18:50:20,574 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:50:20,574 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 18:50:20,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:20,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:50:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-23 18:50:20,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:50:20,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2018-10-23 18:50:20,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:50:20,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:50:20,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:50:20,879 INFO L87 Difference]: Start difference. First operand 3015 states and 4612 transitions. Second operand 4 states. [2018-10-23 18:50:24,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:24,225 INFO L93 Difference]: Finished difference Result 12048 states and 18435 transitions. [2018-10-23 18:50:24,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:50:24,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 246 [2018-10-23 18:50:24,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:24,268 INFO L225 Difference]: With dead ends: 12048 [2018-10-23 18:50:24,268 INFO L226 Difference]: Without dead ends: 9035 [2018-10-23 18:50:24,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 246 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 18:50:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9035 states. [2018-10-23 18:50:24,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9035 to 6022. [2018-10-23 18:50:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6022 states. [2018-10-23 18:50:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6022 states to 6022 states and 9192 transitions. [2018-10-23 18:50:24,424 INFO L78 Accepts]: Start accepts. Automaton has 6022 states and 9192 transitions. Word has length 246 [2018-10-23 18:50:24,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:50:24,425 INFO L481 AbstractCegarLoop]: Abstraction has 6022 states and 9192 transitions. [2018-10-23 18:50:24,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:50:24,425 INFO L276 IsEmpty]: Start isEmpty. Operand 6022 states and 9192 transitions. [2018-10-23 18:50:24,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-23 18:50:24,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:24,438 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:24,438 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:24,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:24,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1056061885, now seen corresponding path program 1 times [2018-10-23 18:50:24,439 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:24,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:24,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:24,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:24,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-23 18:50:24,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:50:24,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:50:24,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:50:24,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:50:24,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:50:24,666 INFO L87 Difference]: Start difference. First operand 6022 states and 9192 transitions. Second operand 3 states. [2018-10-23 18:50:26,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:26,754 INFO L93 Difference]: Finished difference Result 17361 states and 26560 transitions. [2018-10-23 18:50:26,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:50:26,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2018-10-23 18:50:26,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:26,806 INFO L225 Difference]: With dead ends: 17361 [2018-10-23 18:50:26,806 INFO L226 Difference]: Without dead ends: 11341 [2018-10-23 18:50:26,819 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 18:50:26,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11341 states. [2018-10-23 18:50:27,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11341 to 11337. [2018-10-23 18:50:27,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11337 states. [2018-10-23 18:50:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11337 states to 11337 states and 15999 transitions. [2018-10-23 18:50:27,075 INFO L78 Accepts]: Start accepts. Automaton has 11337 states and 15999 transitions. Word has length 246 [2018-10-23 18:50:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:50:27,075 INFO L481 AbstractCegarLoop]: Abstraction has 11337 states and 15999 transitions. [2018-10-23 18:50:27,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:50:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 11337 states and 15999 transitions. [2018-10-23 18:50:27,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-23 18:50:27,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:27,092 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, 2, 2, 2, 2, 2, 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 18:50:27,093 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:27,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:27,093 INFO L82 PathProgramCache]: Analyzing trace with hash -2143225122, now seen corresponding path program 1 times [2018-10-23 18:50:27,093 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:27,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:27,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:27,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:27,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:27,620 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:50:27,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:50:27,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:50:27,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:50:27,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:50:27,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:50:27,622 INFO L87 Difference]: Start difference. First operand 11337 states and 15999 transitions. Second operand 4 states. [2018-10-23 18:50:30,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:30,722 INFO L93 Difference]: Finished difference Result 41586 states and 58258 transitions. [2018-10-23 18:50:30,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:50:30,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 249 [2018-10-23 18:50:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:30,786 INFO L225 Difference]: With dead ends: 41586 [2018-10-23 18:50:30,786 INFO L226 Difference]: Without dead ends: 30251 [2018-10-23 18:50:30,805 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 18:50:30,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30251 states. [2018-10-23 18:50:31,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30251 to 21129. [2018-10-23 18:50:31,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21129 states. [2018-10-23 18:50:31,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21129 states to 21129 states and 28285 transitions. [2018-10-23 18:50:31,194 INFO L78 Accepts]: Start accepts. Automaton has 21129 states and 28285 transitions. Word has length 249 [2018-10-23 18:50:31,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:50:31,194 INFO L481 AbstractCegarLoop]: Abstraction has 21129 states and 28285 transitions. [2018-10-23 18:50:31,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:50:31,194 INFO L276 IsEmpty]: Start isEmpty. Operand 21129 states and 28285 transitions. [2018-10-23 18:50:31,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-23 18:50:31,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:31,221 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:31,221 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:31,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:31,222 INFO L82 PathProgramCache]: Analyzing trace with hash -2086343220, now seen corresponding path program 1 times [2018-10-23 18:50:31,222 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:31,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:31,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:31,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:31,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:31,386 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-23 18:50:31,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:50:31,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:50:31,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:50:31,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:50:31,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:50:31,387 INFO L87 Difference]: Start difference. First operand 21129 states and 28285 transitions. Second operand 3 states. [2018-10-23 18:50:33,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:33,924 INFO L93 Difference]: Finished difference Result 42264 states and 56582 transitions. [2018-10-23 18:50:33,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:50:33,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 256 [2018-10-23 18:50:33,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:33,960 INFO L225 Difference]: With dead ends: 42264 [2018-10-23 18:50:33,960 INFO L226 Difference]: Without dead ends: 21137 [2018-10-23 18:50:33,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 18:50:33,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21137 states. [2018-10-23 18:50:34,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21137 to 21129. [2018-10-23 18:50:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21129 states. [2018-10-23 18:50:34,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21129 states to 21129 states and 25984 transitions. [2018-10-23 18:50:34,422 INFO L78 Accepts]: Start accepts. Automaton has 21129 states and 25984 transitions. Word has length 256 [2018-10-23 18:50:34,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:50:34,423 INFO L481 AbstractCegarLoop]: Abstraction has 21129 states and 25984 transitions. [2018-10-23 18:50:34,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:50:34,423 INFO L276 IsEmpty]: Start isEmpty. Operand 21129 states and 25984 transitions. [2018-10-23 18:50:34,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-23 18:50:34,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:34,445 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:34,446 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:34,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:34,446 INFO L82 PathProgramCache]: Analyzing trace with hash 118608097, now seen corresponding path program 1 times [2018-10-23 18:50:34,446 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:34,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:34,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:34,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:34,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-23 18:50:34,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:50:34,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:50:34,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:50:34,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:50:34,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:50:34,723 INFO L87 Difference]: Start difference. First operand 21129 states and 25984 transitions. Second operand 4 states. [2018-10-23 18:50:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:36,169 INFO L93 Difference]: Finished difference Result 41848 states and 51444 transitions. [2018-10-23 18:50:36,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:50:36,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 273 [2018-10-23 18:50:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:36,202 INFO L225 Difference]: With dead ends: 41848 [2018-10-23 18:50:36,203 INFO L226 Difference]: Without dead ends: 20721 [2018-10-23 18:50:36,225 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 18:50:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20721 states. [2018-10-23 18:50:36,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20721 to 20721. [2018-10-23 18:50:36,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20721 states. [2018-10-23 18:50:36,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20721 states to 20721 states and 24096 transitions. [2018-10-23 18:50:36,484 INFO L78 Accepts]: Start accepts. Automaton has 20721 states and 24096 transitions. Word has length 273 [2018-10-23 18:50:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:50:36,485 INFO L481 AbstractCegarLoop]: Abstraction has 20721 states and 24096 transitions. [2018-10-23 18:50:36,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:50:36,485 INFO L276 IsEmpty]: Start isEmpty. Operand 20721 states and 24096 transitions. [2018-10-23 18:50:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-23 18:50:36,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:36,507 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:36,507 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:36,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:36,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1644802394, now seen corresponding path program 1 times [2018-10-23 18:50:36,508 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:36,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:36,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:36,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:36,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-23 18:50:36,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:50:36,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:50:36,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:50:36,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:50:36,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:50:36,862 INFO L87 Difference]: Start difference. First operand 20721 states and 24096 transitions. Second operand 4 states. [2018-10-23 18:50:39,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:39,216 INFO L93 Difference]: Finished difference Result 81404 states and 94705 transitions. [2018-10-23 18:50:39,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:50:39,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 275 [2018-10-23 18:50:39,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:39,292 INFO L225 Difference]: With dead ends: 81404 [2018-10-23 18:50:39,292 INFO L226 Difference]: Without dead ends: 60685 [2018-10-23 18:50:39,317 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 18:50:39,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60685 states. [2018-10-23 18:50:40,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60685 to 60681. [2018-10-23 18:50:40,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60681 states. [2018-10-23 18:50:40,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60681 states to 60681 states and 70472 transitions. [2018-10-23 18:50:40,399 INFO L78 Accepts]: Start accepts. Automaton has 60681 states and 70472 transitions. Word has length 275 [2018-10-23 18:50:40,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:50:40,399 INFO L481 AbstractCegarLoop]: Abstraction has 60681 states and 70472 transitions. [2018-10-23 18:50:40,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:50:40,400 INFO L276 IsEmpty]: Start isEmpty. Operand 60681 states and 70472 transitions. [2018-10-23 18:50:40,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-23 18:50:40,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:40,420 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:50:40,420 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:40,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:40,421 INFO L82 PathProgramCache]: Analyzing trace with hash 300378130, now seen corresponding path program 1 times [2018-10-23 18:50:40,421 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:40,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:40,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:40,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:40,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:40,585 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-10-23 18:50:40,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:50:40,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:50:40,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:50:40,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:50:40,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:50:40,586 INFO L87 Difference]: Start difference. First operand 60681 states and 70472 transitions. Second operand 3 states. [2018-10-23 18:50:42,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:42,169 INFO L93 Difference]: Finished difference Result 165649 states and 191375 transitions. [2018-10-23 18:50:42,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:50:42,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 308 [2018-10-23 18:50:42,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:42,332 INFO L225 Difference]: With dead ends: 165649 [2018-10-23 18:50:42,332 INFO L226 Difference]: Without dead ends: 104970 [2018-10-23 18:50:42,394 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 18:50:42,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104970 states. [2018-10-23 18:50:44,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104970 to 104934. [2018-10-23 18:50:44,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104934 states. [2018-10-23 18:50:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104934 states to 104934 states and 118153 transitions. [2018-10-23 18:50:44,190 INFO L78 Accepts]: Start accepts. Automaton has 104934 states and 118153 transitions. Word has length 308 [2018-10-23 18:50:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:50:44,191 INFO L481 AbstractCegarLoop]: Abstraction has 104934 states and 118153 transitions. [2018-10-23 18:50:44,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:50:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 104934 states and 118153 transitions. [2018-10-23 18:50:44,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-10-23 18:50:44,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:44,213 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:44,214 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:44,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:44,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1533517783, now seen corresponding path program 1 times [2018-10-23 18:50:44,214 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:44,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:44,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:44,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:44,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-10-23 18:50:44,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:50:44,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:50:44,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:50:44,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:50:44,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:50:44,415 INFO L87 Difference]: Start difference. First operand 104934 states and 118153 transitions. Second operand 3 states. [2018-10-23 18:50:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:46,252 INFO L93 Difference]: Finished difference Result 263408 states and 296380 transitions. [2018-10-23 18:50:46,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:50:46,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 309 [2018-10-23 18:50:46,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:46,462 INFO L225 Difference]: With dead ends: 263408 [2018-10-23 18:50:46,462 INFO L226 Difference]: Without dead ends: 158476 [2018-10-23 18:50:46,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:50:46,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158476 states. [2018-10-23 18:50:49,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158476 to 158458. [2018-10-23 18:50:49,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158458 states. [2018-10-23 18:50:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158458 states to 158458 states and 178048 transitions. [2018-10-23 18:50:49,196 INFO L78 Accepts]: Start accepts. Automaton has 158458 states and 178048 transitions. Word has length 309 [2018-10-23 18:50:49,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:50:49,196 INFO L481 AbstractCegarLoop]: Abstraction has 158458 states and 178048 transitions. [2018-10-23 18:50:49,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:50:49,196 INFO L276 IsEmpty]: Start isEmpty. Operand 158458 states and 178048 transitions. [2018-10-23 18:50:49,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-10-23 18:50:49,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:50:49,219 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:50:49,219 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:50:49,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:50:49,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1717724757, now seen corresponding path program 1 times [2018-10-23 18:50:49,220 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:50:49,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:50:49,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:49,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:49,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:50:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:49,566 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-23 18:50:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 111 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-10-23 18:50:49,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:50:49,732 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 [2018-10-23 18:50:49,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:50:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:50:49,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:50:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-10-23 18:50:50,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:50:50,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-23 18:50:50,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:50:50,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:50:50,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:50:50,049 INFO L87 Difference]: Start difference. First operand 158458 states and 178048 transitions. Second operand 6 states. [2018-10-23 18:50:56,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:50:56,865 INFO L93 Difference]: Finished difference Result 454965 states and 512229 transitions. [2018-10-23 18:50:56,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 18:50:56,866 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 317 [2018-10-23 18:50:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:50:57,261 INFO L225 Difference]: With dead ends: 454965 [2018-10-23 18:50:57,261 INFO L226 Difference]: Without dead ends: 296509 [2018-10-23 18:50:57,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:50:57,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296509 states. [2018-10-23 18:51:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296509 to 295200. [2018-10-23 18:51:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295200 states. [2018-10-23 18:51:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295200 states to 295200 states and 321945 transitions. [2018-10-23 18:51:01,731 INFO L78 Accepts]: Start accepts. Automaton has 295200 states and 321945 transitions. Word has length 317 [2018-10-23 18:51:01,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:51:01,732 INFO L481 AbstractCegarLoop]: Abstraction has 295200 states and 321945 transitions. [2018-10-23 18:51:01,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:51:01,732 INFO L276 IsEmpty]: Start isEmpty. Operand 295200 states and 321945 transitions. [2018-10-23 18:51:01,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2018-10-23 18:51:01,768 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:51:01,769 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:51:01,769 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:51:01,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:51:01,769 INFO L82 PathProgramCache]: Analyzing trace with hash -22662564, now seen corresponding path program 1 times [2018-10-23 18:51:01,770 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:51:01,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:51:01,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:51:01,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:51:01,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:51:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:51:02,322 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-23 18:51:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-10-23 18:51:02,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:51:02,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:51:02,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:51:02,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:51:02,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:51:02,534 INFO L87 Difference]: Start difference. First operand 295200 states and 321945 transitions. Second operand 5 states. [2018-10-23 18:51:12,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:51:12,758 INFO L93 Difference]: Finished difference Result 788120 states and 855300 transitions. [2018-10-23 18:51:12,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:51:12,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 369 [2018-10-23 18:51:12,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:51:13,532 INFO L225 Difference]: With dead ends: 788120 [2018-10-23 18:51:13,533 INFO L226 Difference]: Without dead ends: 492922 [2018-10-23 18:51:13,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:51:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492922 states. [2018-10-23 18:51:20,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492922 to 461133. [2018-10-23 18:51:20,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461133 states. [2018-10-23 18:51:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461133 states to 461133 states and 499637 transitions. [2018-10-23 18:51:20,951 INFO L78 Accepts]: Start accepts. Automaton has 461133 states and 499637 transitions. Word has length 369 [2018-10-23 18:51:20,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:51:20,951 INFO L481 AbstractCegarLoop]: Abstraction has 461133 states and 499637 transitions. [2018-10-23 18:51:20,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:51:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 461133 states and 499637 transitions. [2018-10-23 18:51:20,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-10-23 18:51:20,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:51:20,991 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:20,992 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:51:20,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:51:20,992 INFO L82 PathProgramCache]: Analyzing trace with hash 621590431, now seen corresponding path program 1 times [2018-10-23 18:51:20,992 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:51:20,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:51:20,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:51:20,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:51:20,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:51:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:51:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-10-23 18:51:21,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:51:21,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:51:21,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:51:21,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:51:21,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:51:21,395 INFO L87 Difference]: Start difference. First operand 461133 states and 499637 transitions. Second operand 4 states. [2018-10-23 18:51:30,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:51:30,781 INFO L93 Difference]: Finished difference Result 1337409 states and 1443549 transitions. [2018-10-23 18:51:30,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:51:30,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 380 [2018-10-23 18:51:30,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:51:31,935 INFO L225 Difference]: With dead ends: 1337409 [2018-10-23 18:51:31,935 INFO L226 Difference]: Without dead ends: 876278 [2018-10-23 18:51:32,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 18:51:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876278 states. [2018-10-23 18:51:52,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876278 to 732371. [2018-10-23 18:51:52,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732371 states. [2018-10-23 18:51:53,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732371 states to 732371 states and 786049 transitions. [2018-10-23 18:51:53,582 INFO L78 Accepts]: Start accepts. Automaton has 732371 states and 786049 transitions. Word has length 380 [2018-10-23 18:51:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:51:53,582 INFO L481 AbstractCegarLoop]: Abstraction has 732371 states and 786049 transitions. [2018-10-23 18:51:53,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:51:53,582 INFO L276 IsEmpty]: Start isEmpty. Operand 732371 states and 786049 transitions. [2018-10-23 18:51:53,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-10-23 18:51:53,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:51:53,621 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:51:53,622 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:51:53,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:51:53,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2012126856, now seen corresponding path program 1 times [2018-10-23 18:51:53,622 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:51:53,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:51:53,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:51:53,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:51:53,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:51:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:51:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 203 proven. 10 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-23 18:51:55,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:51:55,668 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 [2018-10-23 18:51:55,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:51:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:51:55,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:51:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-23 18:51:55,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:51:55,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-23 18:51:55,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 18:51:55,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 18:51:55,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:51:55,984 INFO L87 Difference]: Start difference. First operand 732371 states and 786049 transitions. Second operand 8 states. [2018-10-23 18:52:14,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:52:14,241 INFO L93 Difference]: Finished difference Result 1975978 states and 2123306 transitions. [2018-10-23 18:52:14,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-23 18:52:14,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 393 [2018-10-23 18:52:14,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:52:14,242 INFO L225 Difference]: With dead ends: 1975978 [2018-10-23 18:52:14,242 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 18:52:16,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 403 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2018-10-23 18:52:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 18:52:16,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 18:52:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 18:52:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 18:52:16,291 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 393 [2018-10-23 18:52:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:52:16,291 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 18:52:16,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 18:52:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 18:52:16,291 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 18:52:16,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 18:52:33,737 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:34,026 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:34,027 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:39,904 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:49,127 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:49,128 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:51,904 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:51,939 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:51,945 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:51,978 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:52,117 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:52,296 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:52,317 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:52,440 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:52,562 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:52,599 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:52,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:52,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:53,074 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:53,184 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:53,891 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:53,901 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:53,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:54,050 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:54,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:54,233 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:54,267 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:54,727 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:54,771 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:54,779 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:54,872 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:54,972 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:54,980 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:55,004 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:55,064 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:55,120 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:55,425 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:55,456 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:55,504 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:55,513 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:55,632 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:55,735 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:56,061 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:56,092 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:56,113 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:56,224 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:56,928 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:57,275 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:57,877 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:58,076 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:58,108 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:58,257 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:58,315 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:58,355 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:58,748 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:58,897 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:58,936 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:59,071 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:59,250 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:52:59,725 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:00,068 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:00,120 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:00,415 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:00,566 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:00,894 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:01,452 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:02,813 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:03,250 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:03,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:03,861 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:04,186 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:04,245 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:04,306 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:04,842 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:05,067 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:05,364 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:05,460 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:06,595 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:07,461 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:07,959 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:08,584 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:09,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:09,813 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:09,930 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:10,154 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:10,201 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:11,274 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:13,180 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:13,957 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:14,291 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:15,102 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:15,272 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:15,372 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:15,397 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:15,622 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:16,235 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:16,538 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:17,011 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:18,018 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:18,768 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:18,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:20,023 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:20,451 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:21,290 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:21,345 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:21,431 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:21,516 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:21,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:22,126 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:22,321 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:23,394 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:23,510 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:23,855 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:24,557 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:24,710 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:26,863 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:27,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:28,295 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:28,833 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:29,204 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:29,874 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 18:53:29,934 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-10-23 18:53:30,325 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-23 18:53:30,326 INFO L168 Benchmark]: Toolchain (without parser) took 214504.92 ms. Allocated memory was 1.6 GB in the beginning and 6.1 GB in the end (delta: 4.6 GB). Free memory was 1.4 GB in the beginning and 4.5 GB in the end (delta: -3.1 GB). Peak memory consumption was 6.0 GB. Max. memory is 7.1 GB. [2018-10-23 18:53:30,327 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:53:30,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1071.16 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:53:30,329 INFO L168 Benchmark]: Boogie Procedure Inliner took 304.52 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -893.6 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-23 18:53:30,330 INFO L168 Benchmark]: Boogie Preprocessor took 140.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:53:30,330 INFO L168 Benchmark]: RCFGBuilder took 6071.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 258.9 MB). Peak memory consumption was 258.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:53:30,332 INFO L168 Benchmark]: TraceAbstraction took 206910.50 ms. Allocated memory was 2.3 GB in the beginning and 6.1 GB in the end (delta: 3.8 GB). Free memory was 2.0 GB in the beginning and 4.5 GB in the end (delta: -2.5 GB). Peak memory consumption was 5.7 GB. Max. memory is 7.1 GB. [2018-10-23 18:53:30,337 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 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1071.16 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 304.52 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -893.6 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6071.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 258.9 MB). Peak memory consumption was 258.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206910.50 ms. Allocated memory was 2.3 GB in the beginning and 6.1 GB in the end (delta: 3.8 GB). Free memory was 2.0 GB in the beginning and 4.5 GB in the end (delta: -2.5 GB). Peak memory consumption was 5.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1542]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 7818. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown