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/Problem18_label57_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:41:27,722 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:41:27,724 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:41:27,740 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:41:27,740 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:41:27,742 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:41:27,744 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:41:27,747 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:41:27,748 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:41:27,750 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:41:27,751 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:41:27,751 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:41:27,754 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:41:27,756 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:41:27,763 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:41:27,765 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:41:27,766 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:41:27,768 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:41:27,772 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:41:27,773 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:41:27,774 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:41:27,777 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:41:27,779 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 14:41:27,792 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:41:27,818 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:41:27,818 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:41:27,820 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:41:27,820 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:41:27,821 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:41:27,821 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:41:27,821 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:41:27,822 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:41:27,822 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:41:27,823 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:41:27,823 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:41:27,823 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:41:27,823 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:41:27,823 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:41:27,823 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:41:27,824 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:41:27,824 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:41:27,824 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:41:27,824 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:41:27,824 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:41:27,825 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:41:27,825 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:41:27,825 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:41:27,825 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:41:27,825 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:41:27,826 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:41:27,826 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:41:27,826 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:41:27,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:41:27,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:41:27,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:41:27,898 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:41:27,898 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:41:27,899 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label57_false-unreach-call.c [2018-10-24 14:41:27,968 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0f70c2f5d/cc0adbc28b26442bbe01156f520c1913/FLAG1cd55ea6c [2018-10-24 14:41:28,776 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:41:28,777 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label57_false-unreach-call.c [2018-10-24 14:41:28,805 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0f70c2f5d/cc0adbc28b26442bbe01156f520c1913/FLAG1cd55ea6c [2018-10-24 14:41:28,821 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0f70c2f5d/cc0adbc28b26442bbe01156f520c1913 [2018-10-24 14:41:28,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:41:28,836 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:41:28,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:41:28,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:41:28,842 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:41:28,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:41:28" (1/1) ... [2018-10-24 14:41:28,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:28, skipping insertion in model container [2018-10-24 14:41:28,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:41:28" (1/1) ... [2018-10-24 14:41:28,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:41:29,013 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:41:30,035 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:41:30,039 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:41:30,474 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:41:30,503 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:41:30,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:30 WrapperNode [2018-10-24 14:41:30,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:41:30,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:41:30,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:41:30,506 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:41:30,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:30" (1/1) ... [2018-10-24 14:41:30,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:30" (1/1) ... [2018-10-24 14:41:30,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:41:30,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:41:30,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:41:30,967 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:41:30,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:30" (1/1) ... [2018-10-24 14:41:30,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:30" (1/1) ... [2018-10-24 14:41:31,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:30" (1/1) ... [2018-10-24 14:41:31,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:30" (1/1) ... [2018-10-24 14:41:31,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:30" (1/1) ... [2018-10-24 14:41:31,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:30" (1/1) ... [2018-10-24 14:41:31,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:30" (1/1) ... [2018-10-24 14:41:31,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:41:31,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:41:31,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:41:31,205 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:41:31,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:41:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:41:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:41:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:41:40,107 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:41:40,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:41:40 BoogieIcfgContainer [2018-10-24 14:41:40,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:41:40,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:41:40,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:41:40,113 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:41:40,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:41:28" (1/3) ... [2018-10-24 14:41:40,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769a52ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:41:40, skipping insertion in model container [2018-10-24 14:41:40,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:41:30" (2/3) ... [2018-10-24 14:41:40,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769a52ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:41:40, skipping insertion in model container [2018-10-24 14:41:40,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:41:40" (3/3) ... [2018-10-24 14:41:40,118 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label57_false-unreach-call.c [2018-10-24 14:41:40,128 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:41:40,138 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:41:40,156 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:41:40,199 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:41:40,200 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:41:40,200 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:41:40,200 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:41:40,200 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:41:40,201 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:41:40,201 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:41:40,201 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:41:40,201 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:41:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-24 14:41:40,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-24 14:41:40,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:40,245 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:40,247 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:40,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:40,252 INFO L82 PathProgramCache]: Analyzing trace with hash 384191218, now seen corresponding path program 1 times [2018-10-24 14:41:40,254 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:40,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:40,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:40,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:40,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:41:40,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:40,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:41:40,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:41:40,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:41:40,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:40,581 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-24 14:41:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:50,578 INFO L93 Difference]: Finished difference Result 2902 states and 5650 transitions. [2018-10-24 14:41:50,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:41:50,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-10-24 14:41:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:50,625 INFO L225 Difference]: With dead ends: 2902 [2018-10-24 14:41:50,625 INFO L226 Difference]: Without dead ends: 2137 [2018-10-24 14:41:50,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2018-10-24 14:41:50,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2137. [2018-10-24 14:41:50,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2018-10-24 14:41:50,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3512 transitions. [2018-10-24 14:41:50,796 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3512 transitions. Word has length 9 [2018-10-24 14:41:50,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:50,796 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3512 transitions. [2018-10-24 14:41:50,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:41:50,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3512 transitions. [2018-10-24 14:41:50,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-24 14:41:50,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:50,801 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:41:50,801 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:50,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:50,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1279445259, now seen corresponding path program 1 times [2018-10-24 14:41:50,802 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:50,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:50,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:50,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:50,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:41:51,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:51,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:41:51,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:41:51,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:41:51,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:51,266 INFO L87 Difference]: Start difference. First operand 2137 states and 3512 transitions. Second operand 4 states. [2018-10-24 14:42:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:03,659 INFO L93 Difference]: Finished difference Result 7730 states and 12408 transitions. [2018-10-24 14:42:03,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:42:03,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2018-10-24 14:42:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:03,689 INFO L225 Difference]: With dead ends: 7730 [2018-10-24 14:42:03,689 INFO L226 Difference]: Without dead ends: 5595 [2018-10-24 14:42:03,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:42:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2018-10-24 14:42:03,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5595. [2018-10-24 14:42:03,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5595 states. [2018-10-24 14:42:03,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5595 states to 5595 states and 8127 transitions. [2018-10-24 14:42:03,806 INFO L78 Accepts]: Start accepts. Automaton has 5595 states and 8127 transitions. Word has length 79 [2018-10-24 14:42:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:03,806 INFO L481 AbstractCegarLoop]: Abstraction has 5595 states and 8127 transitions. [2018-10-24 14:42:03,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:42:03,807 INFO L276 IsEmpty]: Start isEmpty. Operand 5595 states and 8127 transitions. [2018-10-24 14:42:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 14:42:03,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:03,816 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:42:03,817 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:03,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:03,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1405792587, now seen corresponding path program 1 times [2018-10-24 14:42:03,817 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:03,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:03,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:03,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:03,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:42:04,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:42:04,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:42:04,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:42:04,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:42:04,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:42:04,572 INFO L87 Difference]: Start difference. First operand 5595 states and 8127 transitions. Second operand 5 states. [2018-10-24 14:42:13,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:13,693 INFO L93 Difference]: Finished difference Result 15334 states and 22438 transitions. [2018-10-24 14:42:13,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:42:13,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-10-24 14:42:13,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:13,753 INFO L225 Difference]: With dead ends: 15334 [2018-10-24 14:42:13,754 INFO L226 Difference]: Without dead ends: 9741 [2018-10-24 14:42:13,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:42:13,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9741 states. [2018-10-24 14:42:13,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9741 to 9741. [2018-10-24 14:42:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9741 states. [2018-10-24 14:42:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9741 states to 9741 states and 12610 transitions. [2018-10-24 14:42:13,954 INFO L78 Accepts]: Start accepts. Automaton has 9741 states and 12610 transitions. Word has length 128 [2018-10-24 14:42:13,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:13,955 INFO L481 AbstractCegarLoop]: Abstraction has 9741 states and 12610 transitions. [2018-10-24 14:42:13,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:42:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 9741 states and 12610 transitions. [2018-10-24 14:42:13,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-24 14:42:13,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:13,965 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:13,966 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:13,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:13,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1876778072, now seen corresponding path program 1 times [2018-10-24 14:42:13,967 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:13,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:13,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:13,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:13,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 86 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:42:14,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:42:14,544 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:42:14,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:14,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:42:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:42:14,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:42:14,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:42:14,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:42:14,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:42:14,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:42:14,961 INFO L87 Difference]: Start difference. First operand 9741 states and 12610 transitions. Second operand 6 states. [2018-10-24 14:42:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:27,131 INFO L93 Difference]: Finished difference Result 34693 states and 47766 transitions. [2018-10-24 14:42:27,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:42:27,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 270 [2018-10-24 14:42:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:27,197 INFO L225 Difference]: With dead ends: 34693 [2018-10-24 14:42:27,197 INFO L226 Difference]: Without dead ends: 24261 [2018-10-24 14:42:27,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 270 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:42:27,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24261 states. [2018-10-24 14:42:27,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24261 to 17339. [2018-10-24 14:42:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17339 states. [2018-10-24 14:42:27,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17339 states to 17339 states and 19377 transitions. [2018-10-24 14:42:27,733 INFO L78 Accepts]: Start accepts. Automaton has 17339 states and 19377 transitions. Word has length 270 [2018-10-24 14:42:27,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:27,734 INFO L481 AbstractCegarLoop]: Abstraction has 17339 states and 19377 transitions. [2018-10-24 14:42:27,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:42:27,734 INFO L276 IsEmpty]: Start isEmpty. Operand 17339 states and 19377 transitions. [2018-10-24 14:42:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2018-10-24 14:42:27,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:27,765 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:27,765 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:27,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:27,766 INFO L82 PathProgramCache]: Analyzing trace with hash -965734514, now seen corresponding path program 1 times [2018-10-24 14:42:27,766 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:27,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:27,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:27,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:27,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-10-24 14:42:28,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:42:28,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:42:28,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:42:28,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:42:28,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:42:28,765 INFO L87 Difference]: Start difference. First operand 17339 states and 19377 transitions. Second operand 3 states. [2018-10-24 14:42:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:33,687 INFO L93 Difference]: Finished difference Result 40204 states and 45234 transitions. [2018-10-24 14:42:33,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:42:33,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 898 [2018-10-24 14:42:33,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:33,734 INFO L225 Difference]: With dead ends: 40204 [2018-10-24 14:42:33,734 INFO L226 Difference]: Without dead ends: 22867 [2018-10-24 14:42:33,753 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 [2018-10-24 14:42:33,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22867 states. [2018-10-24 14:42:34,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22867 to 22176. [2018-10-24 14:42:34,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22176 states. [2018-10-24 14:42:34,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22176 states to 22176 states and 24954 transitions. [2018-10-24 14:42:34,057 INFO L78 Accepts]: Start accepts. Automaton has 22176 states and 24954 transitions. Word has length 898 [2018-10-24 14:42:34,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:34,059 INFO L481 AbstractCegarLoop]: Abstraction has 22176 states and 24954 transitions. [2018-10-24 14:42:34,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:42:34,059 INFO L276 IsEmpty]: Start isEmpty. Operand 22176 states and 24954 transitions. [2018-10-24 14:42:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2018-10-24 14:42:34,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:34,088 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:34,088 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:34,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:34,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1985172884, now seen corresponding path program 1 times [2018-10-24 14:42:34,089 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:34,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:34,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:34,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:34,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:34,861 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:42:35,942 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 20 proven. 130 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2018-10-24 14:42:35,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:42:35,942 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:42:35,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:36,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:42:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2018-10-24 14:42:36,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:42:36,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 14:42:36,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:42:36,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:42:36,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:42:36,790 INFO L87 Difference]: Start difference. First operand 22176 states and 24954 transitions. Second operand 5 states. [2018-10-24 14:42:42,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:42,424 INFO L93 Difference]: Finished difference Result 62316 states and 72612 transitions. [2018-10-24 14:42:42,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:42:42,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 910 [2018-10-24 14:42:42,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:42,503 INFO L225 Difference]: With dead ends: 62316 [2018-10-24 14:42:42,503 INFO L226 Difference]: Without dead ends: 40142 [2018-10-24 14:42:42,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 909 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:42:42,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40142 states. [2018-10-24 14:42:42,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40142 to 40142. [2018-10-24 14:42:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40142 states. [2018-10-24 14:42:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40142 states to 40142 states and 45148 transitions. [2018-10-24 14:42:43,011 INFO L78 Accepts]: Start accepts. Automaton has 40142 states and 45148 transitions. Word has length 910 [2018-10-24 14:42:43,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:43,013 INFO L481 AbstractCegarLoop]: Abstraction has 40142 states and 45148 transitions. [2018-10-24 14:42:43,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:42:43,013 INFO L276 IsEmpty]: Start isEmpty. Operand 40142 states and 45148 transitions. [2018-10-24 14:42:43,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2018-10-24 14:42:43,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:43,055 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:43,056 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:43,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:43,056 INFO L82 PathProgramCache]: Analyzing trace with hash -407387247, now seen corresponding path program 1 times [2018-10-24 14:42:43,056 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:43,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:43,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:43,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:43,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-24 14:42:44,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:42:44,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:42:44,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:42:44,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:42:44,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:42:44,314 INFO L87 Difference]: Start difference. First operand 40142 states and 45148 transitions. Second operand 3 states. [2018-10-24 14:42:49,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:49,309 INFO L93 Difference]: Finished difference Result 89956 states and 101827 transitions. [2018-10-24 14:42:49,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:42:49,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 912 [2018-10-24 14:42:49,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:49,366 INFO L225 Difference]: With dead ends: 89956 [2018-10-24 14:42:49,367 INFO L226 Difference]: Without dead ends: 49816 [2018-10-24 14:42:49,397 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 [2018-10-24 14:42:49,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49816 states. [2018-10-24 14:42:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49816 to 49816. [2018-10-24 14:42:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49816 states. [2018-10-24 14:42:49,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49816 states to 49816 states and 55516 transitions. [2018-10-24 14:42:49,951 INFO L78 Accepts]: Start accepts. Automaton has 49816 states and 55516 transitions. Word has length 912 [2018-10-24 14:42:49,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:49,953 INFO L481 AbstractCegarLoop]: Abstraction has 49816 states and 55516 transitions. [2018-10-24 14:42:49,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:42:49,953 INFO L276 IsEmpty]: Start isEmpty. Operand 49816 states and 55516 transitions. [2018-10-24 14:42:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2018-10-24 14:42:49,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:49,964 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:49,964 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:49,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:49,965 INFO L82 PathProgramCache]: Analyzing trace with hash -488477036, now seen corresponding path program 1 times [2018-10-24 14:42:49,965 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:49,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:49,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:49,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:49,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:50,705 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 14:42:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 14 proven. 411 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-24 14:42:52,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:42:52,385 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:42:52,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:52,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:42:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2018-10-24 14:42:53,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:42:53,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-10-24 14:42:53,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 14:42:53,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 14:42:53,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:42:53,069 INFO L87 Difference]: Start difference. First operand 49816 states and 55516 transitions. Second operand 9 states. [2018-10-24 14:43:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:43:12,326 INFO L93 Difference]: Finished difference Result 229126 states and 258809 transitions. [2018-10-24 14:43:12,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 14:43:12,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 933 [2018-10-24 14:43:12,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:43:12,884 INFO L225 Difference]: With dead ends: 229126 [2018-10-24 14:43:12,885 INFO L226 Difference]: Without dead ends: 179312 [2018-10-24 14:43:12,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2018-10-24 14:43:13,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179312 states. [2018-10-24 14:43:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179312 to 74001. [2018-10-24 14:43:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74001 states. [2018-10-24 14:43:14,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74001 states to 74001 states and 81136 transitions. [2018-10-24 14:43:14,078 INFO L78 Accepts]: Start accepts. Automaton has 74001 states and 81136 transitions. Word has length 933 [2018-10-24 14:43:14,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:43:14,079 INFO L481 AbstractCegarLoop]: Abstraction has 74001 states and 81136 transitions. [2018-10-24 14:43:14,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 14:43:14,079 INFO L276 IsEmpty]: Start isEmpty. Operand 74001 states and 81136 transitions. [2018-10-24 14:43:14,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1136 [2018-10-24 14:43:14,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:43:14,098 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:43:14,098 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:43:14,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:43:14,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1799357642, now seen corresponding path program 1 times [2018-10-24 14:43:14,099 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:43:14,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:43:14,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:14,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:43:14,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:43:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2018-10-24 14:43:15,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:43:15,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:43:15,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:43:15,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:43:15,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:43:15,153 INFO L87 Difference]: Start difference. First operand 74001 states and 81136 transitions. Second operand 4 states. [2018-10-24 14:43:20,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:43:20,793 INFO L93 Difference]: Finished difference Result 156292 states and 171875 transitions. [2018-10-24 14:43:20,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:43:20,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1135 [2018-10-24 14:43:20,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:43:20,874 INFO L225 Difference]: With dead ends: 156292 [2018-10-24 14:43:20,874 INFO L226 Difference]: Without dead ends: 76055 [2018-10-24 14:43:20,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:43:20,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76055 states. [2018-10-24 14:43:21,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76055 to 75364. [2018-10-24 14:43:21,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75364 states. [2018-10-24 14:43:21,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75364 states to 75364 states and 80118 transitions. [2018-10-24 14:43:21,479 INFO L78 Accepts]: Start accepts. Automaton has 75364 states and 80118 transitions. Word has length 1135 [2018-10-24 14:43:21,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:43:21,480 INFO L481 AbstractCegarLoop]: Abstraction has 75364 states and 80118 transitions. [2018-10-24 14:43:21,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:43:21,480 INFO L276 IsEmpty]: Start isEmpty. Operand 75364 states and 80118 transitions. [2018-10-24 14:43:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1191 [2018-10-24 14:43:21,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:43:21,503 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:43:21,503 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:43:21,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:43:21,504 INFO L82 PathProgramCache]: Analyzing trace with hash -336413025, now seen corresponding path program 1 times [2018-10-24 14:43:21,504 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:43:21,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:43:21,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:21,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:43:21,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:43:22,130 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:43:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 933 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2018-10-24 14:43:22,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:43:22,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:43:22,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:43:22,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:43:22,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:43:22,944 INFO L87 Difference]: Start difference. First operand 75364 states and 80118 transitions. Second operand 4 states. [2018-10-24 14:43:28,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:43:28,359 INFO L93 Difference]: Finished difference Result 152799 states and 162312 transitions. [2018-10-24 14:43:28,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:43:28,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1190 [2018-10-24 14:43:28,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:43:28,441 INFO L225 Difference]: With dead ends: 152799 [2018-10-24 14:43:28,441 INFO L226 Difference]: Without dead ends: 76054 [2018-10-24 14:43:28,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:43:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76054 states. [2018-10-24 14:43:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76054 to 74672. [2018-10-24 14:43:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74672 states. [2018-10-24 14:43:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74672 states to 74672 states and 78293 transitions. [2018-10-24 14:43:29,096 INFO L78 Accepts]: Start accepts. Automaton has 74672 states and 78293 transitions. Word has length 1190 [2018-10-24 14:43:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:43:29,097 INFO L481 AbstractCegarLoop]: Abstraction has 74672 states and 78293 transitions. [2018-10-24 14:43:29,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:43:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 74672 states and 78293 transitions. [2018-10-24 14:43:29,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1220 [2018-10-24 14:43:29,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:43:29,116 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:43:29,117 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:43:29,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:43:29,117 INFO L82 PathProgramCache]: Analyzing trace with hash 552987551, now seen corresponding path program 1 times [2018-10-24 14:43:29,118 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:43:29,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:43:29,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:29,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:43:29,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:43:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1656 backedges. 710 proven. 852 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-24 14:43:32,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:43:32,996 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:43:33,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:43:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:43:33,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:43:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1656 backedges. 853 proven. 0 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2018-10-24 14:43:34,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:43:34,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2018-10-24 14:43:34,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 14:43:34,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 14:43:34,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-10-24 14:43:34,974 INFO L87 Difference]: Start difference. First operand 74672 states and 78293 transitions. Second operand 13 states. [2018-10-24 14:43:55,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:43:55,560 INFO L93 Difference]: Finished difference Result 177850 states and 186617 transitions. [2018-10-24 14:43:55,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-24 14:43:55,561 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1219 [2018-10-24 14:43:55,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:43:55,665 INFO L225 Difference]: With dead ends: 177850 [2018-10-24 14:43:55,665 INFO L226 Difference]: Without dead ends: 103871 [2018-10-24 14:43:55,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1273 GetRequests, 1237 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2018-10-24 14:43:55,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103871 states. [2018-10-24 14:43:56,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103871 to 73981. [2018-10-24 14:43:56,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73981 states. [2018-10-24 14:43:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73981 states to 73981 states and 77271 transitions. [2018-10-24 14:43:56,638 INFO L78 Accepts]: Start accepts. Automaton has 73981 states and 77271 transitions. Word has length 1219 [2018-10-24 14:43:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:43:56,638 INFO L481 AbstractCegarLoop]: Abstraction has 73981 states and 77271 transitions. [2018-10-24 14:43:56,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 14:43:56,639 INFO L276 IsEmpty]: Start isEmpty. Operand 73981 states and 77271 transitions. [2018-10-24 14:43:56,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1239 [2018-10-24 14:43:56,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:43:56,655 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:43:56,655 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:43:56,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:43:56,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1465835729, now seen corresponding path program 1 times [2018-10-24 14:43:56,656 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:43:56,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:43:56,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:56,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:43:56,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:43:57,601 WARN L179 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-24 14:43:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 948 proven. 0 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2018-10-24 14:43:58,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:43:58,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:43:58,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:43:58,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:43:58,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:43:58,261 INFO L87 Difference]: Start difference. First operand 73981 states and 77271 transitions. Second operand 4 states. [2018-10-24 14:44:03,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:44:03,211 INFO L93 Difference]: Finished difference Result 148651 states and 155233 transitions. [2018-10-24 14:44:03,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:44:03,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1238 [2018-10-24 14:44:03,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:44:03,283 INFO L225 Difference]: With dead ends: 148651 [2018-10-24 14:44:03,283 INFO L226 Difference]: Without dead ends: 75363 [2018-10-24 14:44:03,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:44:03,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75363 states. [2018-10-24 14:44:03,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75363 to 73981. [2018-10-24 14:44:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73981 states. [2018-10-24 14:44:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73981 states to 73981 states and 76973 transitions. [2018-10-24 14:44:03,910 INFO L78 Accepts]: Start accepts. Automaton has 73981 states and 76973 transitions. Word has length 1238 [2018-10-24 14:44:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:44:03,911 INFO L481 AbstractCegarLoop]: Abstraction has 73981 states and 76973 transitions. [2018-10-24 14:44:03,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:44:03,911 INFO L276 IsEmpty]: Start isEmpty. Operand 73981 states and 76973 transitions. [2018-10-24 14:44:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1294 [2018-10-24 14:44:03,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:44:03,933 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:44:03,933 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:44:03,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:44:03,933 INFO L82 PathProgramCache]: Analyzing trace with hash 85839490, now seen corresponding path program 1 times [2018-10-24 14:44:03,934 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:44:03,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:44:03,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:03,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:03,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:06,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-10-24 14:44:06,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:44:06,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:44:06,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:44:06,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:44:06,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:44:06,008 INFO L87 Difference]: Start difference. First operand 73981 states and 76973 transitions. Second operand 4 states. [2018-10-24 14:44:10,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:44:10,539 INFO L93 Difference]: Finished difference Result 144497 states and 150445 transitions. [2018-10-24 14:44:10,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:44:10,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1293 [2018-10-24 14:44:10,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:44:10,610 INFO L225 Difference]: With dead ends: 144497 [2018-10-24 14:44:10,610 INFO L226 Difference]: Without dead ends: 71209 [2018-10-24 14:44:10,649 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:44:10,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71209 states. [2018-10-24 14:44:11,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71209 to 70518. [2018-10-24 14:44:11,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70518 states. [2018-10-24 14:44:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70518 states to 70518 states and 72953 transitions. [2018-10-24 14:44:11,581 INFO L78 Accepts]: Start accepts. Automaton has 70518 states and 72953 transitions. Word has length 1293 [2018-10-24 14:44:11,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:44:11,582 INFO L481 AbstractCegarLoop]: Abstraction has 70518 states and 72953 transitions. [2018-10-24 14:44:11,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:44:11,583 INFO L276 IsEmpty]: Start isEmpty. Operand 70518 states and 72953 transitions. [2018-10-24 14:44:11,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1369 [2018-10-24 14:44:11,608 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:44:11,609 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:44:11,609 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:44:11,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:44:11,610 INFO L82 PathProgramCache]: Analyzing trace with hash -543097555, now seen corresponding path program 1 times [2018-10-24 14:44:11,610 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:44:11,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:44:11,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:11,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:11,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2350 backedges. 1464 proven. 4 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-10-24 14:44:13,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:44:13,391 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:44:13,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:13,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:44:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2350 backedges. 1074 proven. 0 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2018-10-24 14:44:14,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:44:14,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 14:44:14,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:44:14,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:44:14,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:44:14,592 INFO L87 Difference]: Start difference. First operand 70518 states and 72953 transitions. Second operand 5 states. [2018-10-24 14:44:24,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:44:24,690 INFO L93 Difference]: Finished difference Result 165903 states and 172100 transitions. [2018-10-24 14:44:24,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:44:24,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1368 [2018-10-24 14:44:24,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:44:24,782 INFO L225 Difference]: With dead ends: 165903 [2018-10-24 14:44:24,782 INFO L226 Difference]: Without dead ends: 87078 [2018-10-24 14:44:24,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1380 GetRequests, 1371 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:44:24,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87078 states. [2018-10-24 14:44:25,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87078 to 85005. [2018-10-24 14:44:25,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85005 states. [2018-10-24 14:44:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85005 states to 85005 states and 86789 transitions. [2018-10-24 14:44:25,744 INFO L78 Accepts]: Start accepts. Automaton has 85005 states and 86789 transitions. Word has length 1368 [2018-10-24 14:44:25,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:44:25,745 INFO L481 AbstractCegarLoop]: Abstraction has 85005 states and 86789 transitions. [2018-10-24 14:44:25,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:44:25,745 INFO L276 IsEmpty]: Start isEmpty. Operand 85005 states and 86789 transitions. [2018-10-24 14:44:25,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1539 [2018-10-24 14:44:25,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:44:25,774 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:44:25,774 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:44:25,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:44:25,775 INFO L82 PathProgramCache]: Analyzing trace with hash -834619835, now seen corresponding path program 1 times [2018-10-24 14:44:25,775 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:44:25,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:44:25,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:25,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:25,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 1652 proven. 70 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2018-10-24 14:44:27,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:44:27,571 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:44:27,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:27,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:44:29,084 WARN L179 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 22 [2018-10-24 14:44:30,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 2356 trivial. 0 not checked. [2018-10-24 14:44:30,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:44:30,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 14:44:30,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:44:30,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:44:30,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:44:30,130 INFO L87 Difference]: Start difference. First operand 85005 states and 86789 transitions. Second operand 5 states. [2018-10-24 14:44:57,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:44:57,267 INFO L93 Difference]: Finished difference Result 203869 states and 208211 transitions. [2018-10-24 14:44:57,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 14:44:57,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1538 [2018-10-24 14:44:57,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:44:57,387 INFO L225 Difference]: With dead ends: 203869 [2018-10-24 14:44:57,387 INFO L226 Difference]: Without dead ends: 119557 [2018-10-24 14:44:57,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1544 GetRequests, 1539 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:44:57,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119557 states. [2018-10-24 14:44:58,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119557 to 113337. [2018-10-24 14:44:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113337 states. [2018-10-24 14:44:58,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113337 states to 113337 states and 115232 transitions. [2018-10-24 14:44:58,480 INFO L78 Accepts]: Start accepts. Automaton has 113337 states and 115232 transitions. Word has length 1538 [2018-10-24 14:44:58,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:44:58,481 INFO L481 AbstractCegarLoop]: Abstraction has 113337 states and 115232 transitions. [2018-10-24 14:44:58,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:44:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 113337 states and 115232 transitions. [2018-10-24 14:44:58,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1814 [2018-10-24 14:44:58,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:44:58,543 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:44:58,543 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:44:58,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:44:58,544 INFO L82 PathProgramCache]: Analyzing trace with hash 485102502, now seen corresponding path program 1 times [2018-10-24 14:44:58,544 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:44:58,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:44:58,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:58,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:58,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:45:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3521 backedges. 2157 proven. 786 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-24 14:45:01,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:45:01,756 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:45:01,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:45:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:45:02,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:45:03,131 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-24 14:45:05,359 WARN L179 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 615 DAG size of output: 29 Received shutdown request... [2018-10-24 14:45:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3521 backedges. 1018 proven. 1925 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-24 14:45:18,269 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:45:18,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-24 14:45:18,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 14:45:18,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 14:45:18,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-10-24 14:45:18,272 INFO L87 Difference]: Start difference. First operand 113337 states and 115232 transitions. Second operand 11 states. [2018-10-24 14:45:18,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 14:45:18,273 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:45:18,279 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:45:18,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:45:18 BoogieIcfgContainer [2018-10-24 14:45:18,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:45:18,280 INFO L168 Benchmark]: Toolchain (without parser) took 229445.64 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -324.0 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 14:45:18,282 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:45:18,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1667.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:45:18,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 461.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -931.5 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:45:18,284 INFO L168 Benchmark]: Boogie Preprocessor took 237.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2018-10-24 14:45:18,285 INFO L168 Benchmark]: RCFGBuilder took 8903.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 524.5 MB). Peak memory consumption was 524.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:45:18,285 INFO L168 Benchmark]: TraceAbstraction took 218169.44 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 1.7 GB in the end (delta: -106.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 14:45:18,291 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1667.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 461.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -931.5 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 237.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8903.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 524.5 MB). Peak memory consumption was 524.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218169.44 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 1.7 GB in the end (delta: -106.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 33). Cancelled while BasicCegarLoop was constructing difference of abstraction (113337states) and FLOYD_HOARE automaton (currently 2 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 218.0s OverallTime, 16 OverallIterations, 8 TraceHistogramMax, 158.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7118 SDtfs, 48204 SDslu, 2131 SDs, 0 SdLazy, 90684 SolverSat, 15673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 128.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8207 GetRequests, 8093 SyntacticMatches, 18 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113337occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.0s AutomataMinimizationTime, 15 MinimizatonAttempts, 155253 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 31.9s InterpolantComputationTime, 22984 NumberOfCodeBlocks, 22984 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 22961 ConstructedInterpolants, 854 QuantifiedInterpolants, 129240918 SizeOfPredicates, 6 NumberOfNonLiveVariables, 9270 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 23 InterpolantComputations, 15 PerfectInterpolantSequences, 25468/29650 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown