java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:21:58,785 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:21:58,789 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:21:58,804 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:21:58,804 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:21:58,807 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:21:58,808 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:21:58,810 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:21:58,817 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:21:58,818 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:21:58,819 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:21:58,819 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:21:58,820 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:21:58,821 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:21:58,825 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:21:58,826 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:21:58,830 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:21:58,832 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:21:58,834 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:21:58,836 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:21:58,838 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:21:58,839 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:21:58,841 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:21:58,849 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:21:58,866 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:21:58,866 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:21:58,867 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:21:58,867 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:21:58,868 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:21:58,868 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:21:58,868 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:21:58,869 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:21:58,869 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:21:58,869 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:21:58,869 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:21:58,869 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:21:58,870 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:21:58,870 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:21:58,870 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:21:58,870 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:21:58,870 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:21:58,871 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:21:58,873 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:21:58,873 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:21:58,873 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:21:58,874 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:21:58,874 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:21:58,874 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:21:58,874 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:21:58,875 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:21:58,875 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:21:58,875 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:21:58,923 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:21:58,937 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:21:58,941 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:21:58,943 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:21:58,944 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:21:58,944 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c [2018-10-23 20:21:59,006 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59be03037/025bef70583f484493bc3f276eb911c4/FLAG5ba43292e [2018-10-23 20:21:59,825 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:21:59,826 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c [2018-10-23 20:21:59,870 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59be03037/025bef70583f484493bc3f276eb911c4/FLAG5ba43292e [2018-10-23 20:21:59,893 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59be03037/025bef70583f484493bc3f276eb911c4 [2018-10-23 20:21:59,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:21:59,909 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:21:59,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:21:59,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:21:59,917 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:21:59,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:59" (1/1) ... [2018-10-23 20:21:59,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3236d4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:59, skipping insertion in model container [2018-10-23 20:21:59,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:59" (1/1) ... [2018-10-23 20:21:59,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:22:00,128 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:22:01,531 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:22:01,537 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:22:02,313 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:22:02,347 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:22:02,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:02 WrapperNode [2018-10-23 20:22:02,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:22:02,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:22:02,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:22:02,350 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:22:02,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:02" (1/1) ... [2018-10-23 20:22:02,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:02" (1/1) ... [2018-10-23 20:22:03,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:22:03,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:22:03,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:22:03,140 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:22:03,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:02" (1/1) ... [2018-10-23 20:22:03,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:02" (1/1) ... [2018-10-23 20:22:03,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:02" (1/1) ... [2018-10-23 20:22:03,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:02" (1/1) ... [2018-10-23 20:22:03,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:02" (1/1) ... [2018-10-23 20:22:03,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:02" (1/1) ... [2018-10-23 20:22:03,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:02" (1/1) ... [2018-10-23 20:22:03,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:22:03,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:22:03,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:22:03,730 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:22:03,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:22:03,808 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:22:03,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:22:03,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:22:16,353 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:22:16,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:22:16 BoogieIcfgContainer [2018-10-23 20:22:16,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:22:16,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:22:16,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:22:16,358 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:22:16,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:21:59" (1/3) ... [2018-10-23 20:22:16,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690eb810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:22:16, skipping insertion in model container [2018-10-23 20:22:16,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:02" (2/3) ... [2018-10-23 20:22:16,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690eb810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:22:16, skipping insertion in model container [2018-10-23 20:22:16,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:22:16" (3/3) ... [2018-10-23 20:22:16,362 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label50_true-unreach-call.c [2018-10-23 20:22:16,371 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:22:16,380 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:22:16,398 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:22:16,443 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:22:16,444 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:22:16,444 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:22:16,444 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:22:16,444 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:22:16,444 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:22:16,444 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:22:16,445 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:22:16,445 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:22:16,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 20:22:16,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-23 20:22:16,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:16,506 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:22:16,508 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:16,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:16,513 INFO L82 PathProgramCache]: Analyzing trace with hash 265969354, now seen corresponding path program 1 times [2018-10-23 20:22:16,515 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:16,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:16,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:16,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:16,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:22:17,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:22:17,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:22:17,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:22:17,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:22:17,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:17,029 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 20:22:34,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:34,049 INFO L93 Difference]: Finished difference Result 4033 states and 7562 transitions. [2018-10-23 20:22:34,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:34,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2018-10-23 20:22:34,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:34,099 INFO L225 Difference]: With dead ends: 4033 [2018-10-23 20:22:34,099 INFO L226 Difference]: Without dead ends: 2927 [2018-10-23 20:22:34,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:34,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2018-10-23 20:22:34,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2797. [2018-10-23 20:22:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2797 states. [2018-10-23 20:22:34,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4999 transitions. [2018-10-23 20:22:34,285 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4999 transitions. Word has length 63 [2018-10-23 20:22:34,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:34,286 INFO L481 AbstractCegarLoop]: Abstraction has 2797 states and 4999 transitions. [2018-10-23 20:22:34,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:22:34,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4999 transitions. [2018-10-23 20:22:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-23 20:22:34,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:34,297 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:22:34,297 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:34,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:34,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1834159543, now seen corresponding path program 1 times [2018-10-23 20:22:34,298 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:34,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:34,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:34,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:34,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:22:34,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:22:34,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:22:34,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:22:34,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:22:34,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:34,566 INFO L87 Difference]: Start difference. First operand 2797 states and 4999 transitions. Second operand 4 states. [2018-10-23 20:22:48,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:48,743 INFO L93 Difference]: Finished difference Result 10366 states and 18928 transitions. [2018-10-23 20:22:48,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:48,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2018-10-23 20:22:48,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:48,783 INFO L225 Difference]: With dead ends: 10366 [2018-10-23 20:22:48,784 INFO L226 Difference]: Without dead ends: 7571 [2018-10-23 20:22:48,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:48,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7571 states. [2018-10-23 20:22:49,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7571 to 7548. [2018-10-23 20:22:49,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7548 states. [2018-10-23 20:22:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7548 states to 7548 states and 11977 transitions. [2018-10-23 20:22:49,097 INFO L78 Accepts]: Start accepts. Automaton has 7548 states and 11977 transitions. Word has length 130 [2018-10-23 20:22:49,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:49,098 INFO L481 AbstractCegarLoop]: Abstraction has 7548 states and 11977 transitions. [2018-10-23 20:22:49,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:22:49,098 INFO L276 IsEmpty]: Start isEmpty. Operand 7548 states and 11977 transitions. [2018-10-23 20:22:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-23 20:22:49,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:49,112 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:22:49,113 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:49,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:49,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1357792343, now seen corresponding path program 1 times [2018-10-23 20:22:49,113 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:49,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:49,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:49,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:49,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:22:49,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:22:49,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:22:49,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:22:49,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:22:49,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:49,532 INFO L87 Difference]: Start difference. First operand 7548 states and 11977 transitions. Second operand 4 states. [2018-10-23 20:22:59,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:59,769 INFO L93 Difference]: Finished difference Result 19869 states and 32193 transitions. [2018-10-23 20:22:59,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:59,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2018-10-23 20:22:59,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:59,838 INFO L225 Difference]: With dead ends: 19869 [2018-10-23 20:22:59,839 INFO L226 Difference]: Without dead ends: 12323 [2018-10-23 20:22:59,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:59,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12323 states. [2018-10-23 20:23:00,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12323 to 12288. [2018-10-23 20:23:00,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12288 states. [2018-10-23 20:23:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12288 states to 12288 states and 18328 transitions. [2018-10-23 20:23:00,290 INFO L78 Accepts]: Start accepts. Automaton has 12288 states and 18328 transitions. Word has length 160 [2018-10-23 20:23:00,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:23:00,291 INFO L481 AbstractCegarLoop]: Abstraction has 12288 states and 18328 transitions. [2018-10-23 20:23:00,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:23:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 12288 states and 18328 transitions. [2018-10-23 20:23:00,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-23 20:23:00,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:23:00,299 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:23:00,299 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:23:00,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:23:00,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1694419197, now seen corresponding path program 1 times [2018-10-23 20:23:00,300 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:23:00,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:23:00,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:00,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:00,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-10-23 20:23:00,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:23:00,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:23:00,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:23:00,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:23:00,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:23:00,558 INFO L87 Difference]: Start difference. First operand 12288 states and 18328 transitions. Second operand 3 states. [2018-10-23 20:23:07,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:23:07,682 INFO L93 Difference]: Finished difference Result 36389 states and 54383 transitions. [2018-10-23 20:23:07,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:23:07,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2018-10-23 20:23:07,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:23:07,743 INFO L225 Difference]: With dead ends: 36389 [2018-10-23 20:23:07,743 INFO L226 Difference]: Without dead ends: 24103 [2018-10-23 20:23:07,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:23:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24103 states. [2018-10-23 20:23:08,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24103 to 24101. [2018-10-23 20:23:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24101 states. [2018-10-23 20:23:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24101 states to 24101 states and 32392 transitions. [2018-10-23 20:23:08,108 INFO L78 Accepts]: Start accepts. Automaton has 24101 states and 32392 transitions. Word has length 217 [2018-10-23 20:23:08,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:23:08,108 INFO L481 AbstractCegarLoop]: Abstraction has 24101 states and 32392 transitions. [2018-10-23 20:23:08,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:23:08,108 INFO L276 IsEmpty]: Start isEmpty. Operand 24101 states and 32392 transitions. [2018-10-23 20:23:08,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-23 20:23:08,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:23:08,116 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:23:08,116 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:23:08,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:23:08,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1870594673, now seen corresponding path program 1 times [2018-10-23 20:23:08,116 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:23:08,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:23:08,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:08,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:08,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:08,462 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:23:08,703 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 20:23:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-10-23 20:23:08,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:23:08,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:23:08,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:23:08,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:23:08,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:23:08,823 INFO L87 Difference]: Start difference. First operand 24101 states and 32392 transitions. Second operand 5 states. [2018-10-23 20:23:20,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:23:20,426 INFO L93 Difference]: Finished difference Result 74199 states and 99162 transitions. [2018-10-23 20:23:20,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:23:20,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2018-10-23 20:23:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:23:20,551 INFO L225 Difference]: With dead ends: 74199 [2018-10-23 20:23:20,552 INFO L226 Difference]: Without dead ends: 50100 [2018-10-23 20:23:20,587 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:23:20,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50100 states. [2018-10-23 20:23:21,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50100 to 50099. [2018-10-23 20:23:21,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50099 states. [2018-10-23 20:23:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50099 states to 50099 states and 63121 transitions. [2018-10-23 20:23:21,290 INFO L78 Accepts]: Start accepts. Automaton has 50099 states and 63121 transitions. Word has length 222 [2018-10-23 20:23:21,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:23:21,291 INFO L481 AbstractCegarLoop]: Abstraction has 50099 states and 63121 transitions. [2018-10-23 20:23:21,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:23:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 50099 states and 63121 transitions. [2018-10-23 20:23:21,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-23 20:23:21,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:23:21,327 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:23:21,327 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:23:21,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:23:21,328 INFO L82 PathProgramCache]: Analyzing trace with hash -483667799, now seen corresponding path program 1 times [2018-10-23 20:23:21,328 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:23:21,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:23:21,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:21,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:21,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-23 20:23:22,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:23:22,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:23:22,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:23:22,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:23:22,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:23:22,151 INFO L87 Difference]: Start difference. First operand 50099 states and 63121 transitions. Second operand 3 states. [2018-10-23 20:23:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:23:28,367 INFO L93 Difference]: Finished difference Result 100967 states and 127099 transitions. [2018-10-23 20:23:28,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:23:28,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 414 [2018-10-23 20:23:28,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:23:28,437 INFO L225 Difference]: With dead ends: 100967 [2018-10-23 20:23:28,437 INFO L226 Difference]: Without dead ends: 51658 [2018-10-23 20:23:28,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:23:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51658 states. [2018-10-23 20:23:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51658 to 50079. [2018-10-23 20:23:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50079 states. [2018-10-23 20:23:29,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50079 states to 50079 states and 58856 transitions. [2018-10-23 20:23:29,004 INFO L78 Accepts]: Start accepts. Automaton has 50079 states and 58856 transitions. Word has length 414 [2018-10-23 20:23:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:23:29,004 INFO L481 AbstractCegarLoop]: Abstraction has 50079 states and 58856 transitions. [2018-10-23 20:23:29,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:23:29,004 INFO L276 IsEmpty]: Start isEmpty. Operand 50079 states and 58856 transitions. [2018-10-23 20:23:29,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-10-23 20:23:29,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:23:29,032 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:23:29,032 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:23:29,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:23:29,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1888480088, now seen corresponding path program 1 times [2018-10-23 20:23:29,033 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:23:29,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:23:29,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:29,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:29,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 313 proven. 4 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-10-23 20:23:29,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:23:29,522 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:23:29,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:30,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:23:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-10-23 20:23:30,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:23:30,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:23:30,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:23:30,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:23:30,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:23:30,189 INFO L87 Difference]: Start difference. First operand 50079 states and 58856 transitions. Second operand 4 states. [2018-10-23 20:23:43,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:23:43,332 INFO L93 Difference]: Finished difference Result 190030 states and 223875 transitions. [2018-10-23 20:23:43,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:23:43,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 432 [2018-10-23 20:23:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:23:43,608 INFO L225 Difference]: With dead ends: 190030 [2018-10-23 20:23:43,608 INFO L226 Difference]: Without dead ends: 135991 [2018-10-23 20:23:43,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 432 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:23:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135991 states. [2018-10-23 20:23:45,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135991 to 93397. [2018-10-23 20:23:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93397 states. [2018-10-23 20:23:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93397 states to 93397 states and 105573 transitions. [2018-10-23 20:23:45,836 INFO L78 Accepts]: Start accepts. Automaton has 93397 states and 105573 transitions. Word has length 432 [2018-10-23 20:23:45,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:23:45,836 INFO L481 AbstractCegarLoop]: Abstraction has 93397 states and 105573 transitions. [2018-10-23 20:23:45,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:23:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 93397 states and 105573 transitions. [2018-10-23 20:23:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2018-10-23 20:23:45,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:23:45,883 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:23:45,883 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:23:45,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:23:45,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1856328005, now seen corresponding path program 1 times [2018-10-23 20:23:45,884 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:23:45,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:23:45,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:45,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:45,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 584 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2018-10-23 20:23:46,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:23:46,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:23:46,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:23:46,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:23:46,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:23:46,627 INFO L87 Difference]: Start difference. First operand 93397 states and 105573 transitions. Second operand 5 states. [2018-10-23 20:24:05,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:24:05,754 INFO L93 Difference]: Finished difference Result 263511 states and 298245 transitions. [2018-10-23 20:24:05,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:24:05,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 525 [2018-10-23 20:24:05,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:24:05,987 INFO L225 Difference]: With dead ends: 263511 [2018-10-23 20:24:05,987 INFO L226 Difference]: Without dead ends: 170904 [2018-10-23 20:24:06,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:24:06,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170904 states. [2018-10-23 20:24:07,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170904 to 161250. [2018-10-23 20:24:07,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161250 states. [2018-10-23 20:24:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161250 states to 161250 states and 179906 transitions. [2018-10-23 20:24:07,578 INFO L78 Accepts]: Start accepts. Automaton has 161250 states and 179906 transitions. Word has length 525 [2018-10-23 20:24:07,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:24:07,578 INFO L481 AbstractCegarLoop]: Abstraction has 161250 states and 179906 transitions. [2018-10-23 20:24:07,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:24:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 161250 states and 179906 transitions. [2018-10-23 20:24:07,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2018-10-23 20:24:07,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:24:07,616 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2018-10-23 20:24:07,616 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:24:07,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:24:07,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1272140782, now seen corresponding path program 1 times [2018-10-23 20:24:07,617 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:24:07,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:24:07,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:07,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:07,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:08,131 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 20:24:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2018-10-23 20:24:09,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:24:09,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:24:09,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:24:09,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:24:09,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:24:09,087 INFO L87 Difference]: Start difference. First operand 161250 states and 179906 transitions. Second operand 4 states. [2018-10-23 20:24:22,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:24:22,489 INFO L93 Difference]: Finished difference Result 322519 states and 359866 transitions. [2018-10-23 20:24:22,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:24:22,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 556 [2018-10-23 20:24:22,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:24:22,694 INFO L225 Difference]: With dead ends: 322519 [2018-10-23 20:24:22,694 INFO L226 Difference]: Without dead ends: 159676 [2018-10-23 20:24:22,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:24:22,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159676 states. [2018-10-23 20:24:25,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159676 to 158078. [2018-10-23 20:24:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158078 states. [2018-10-23 20:24:25,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158078 states to 158078 states and 172646 transitions. [2018-10-23 20:24:25,201 INFO L78 Accepts]: Start accepts. Automaton has 158078 states and 172646 transitions. Word has length 556 [2018-10-23 20:24:25,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:24:25,202 INFO L481 AbstractCegarLoop]: Abstraction has 158078 states and 172646 transitions. [2018-10-23 20:24:25,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:24:25,203 INFO L276 IsEmpty]: Start isEmpty. Operand 158078 states and 172646 transitions. [2018-10-23 20:24:25,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2018-10-23 20:24:25,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:24:25,223 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:24:25,224 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:24:25,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:24:25,224 INFO L82 PathProgramCache]: Analyzing trace with hash 144221470, now seen corresponding path program 1 times [2018-10-23 20:24:25,224 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:24:25,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:24:25,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:25,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:25,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-10-23 20:24:25,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:24:25,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:24:25,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:24:25,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:24:25,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:24:25,891 INFO L87 Difference]: Start difference. First operand 158078 states and 172646 transitions. Second operand 4 states. [2018-10-23 20:24:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:24:35,516 INFO L93 Difference]: Finished difference Result 327187 states and 356840 transitions. [2018-10-23 20:24:35,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:24:35,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 585 [2018-10-23 20:24:35,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:24:35,706 INFO L225 Difference]: With dead ends: 327187 [2018-10-23 20:24:35,707 INFO L226 Difference]: Without dead ends: 155663 [2018-10-23 20:24:35,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:24:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155663 states. [2018-10-23 20:24:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155663 to 150141. [2018-10-23 20:24:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150141 states. [2018-10-23 20:24:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150141 states to 150141 states and 162584 transitions. [2018-10-23 20:24:37,152 INFO L78 Accepts]: Start accepts. Automaton has 150141 states and 162584 transitions. Word has length 585 [2018-10-23 20:24:37,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:24:37,153 INFO L481 AbstractCegarLoop]: Abstraction has 150141 states and 162584 transitions. [2018-10-23 20:24:37,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:24:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 150141 states and 162584 transitions. [2018-10-23 20:24:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2018-10-23 20:24:37,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:24:37,170 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:24:37,171 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:24:37,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:24:37,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1417238191, now seen corresponding path program 1 times [2018-10-23 20:24:37,171 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:24:37,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:24:37,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:37,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:37,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-23 20:24:39,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:24:39,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:24:39,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:24:39,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:24:39,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:24:39,073 INFO L87 Difference]: Start difference. First operand 150141 states and 162584 transitions. Second operand 3 states. [2018-10-23 20:24:48,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:24:48,355 INFO L93 Difference]: Finished difference Result 300278 states and 325182 transitions. [2018-10-23 20:24:48,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:24:48,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 631 [2018-10-23 20:24:48,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:24:48,521 INFO L225 Difference]: With dead ends: 300278 [2018-10-23 20:24:48,522 INFO L226 Difference]: Without dead ends: 150927 [2018-10-23 20:24:48,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 7 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:24:48,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150927 states. [2018-10-23 20:24:49,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150927 to 150138. [2018-10-23 20:24:49,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150138 states. [2018-10-23 20:24:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150138 states to 150138 states and 159890 transitions. [2018-10-23 20:24:49,886 INFO L78 Accepts]: Start accepts. Automaton has 150138 states and 159890 transitions. Word has length 631 [2018-10-23 20:24:49,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:24:49,887 INFO L481 AbstractCegarLoop]: Abstraction has 150138 states and 159890 transitions. [2018-10-23 20:24:49,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:24:49,888 INFO L276 IsEmpty]: Start isEmpty. Operand 150138 states and 159890 transitions. [2018-10-23 20:24:49,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2018-10-23 20:24:49,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:24:49,903 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:24:49,904 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:24:49,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:24:49,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1058101010, now seen corresponding path program 1 times [2018-10-23 20:24:49,904 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:24:49,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:24:49,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:49,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:49,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 887 proven. 85 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-23 20:24:54,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:24:54,871 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:24:54,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:55,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:24:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 751 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-23 20:24:56,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:24:56,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-10-23 20:24:56,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 20:24:56,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 20:24:56,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:24:56,075 INFO L87 Difference]: Start difference. First operand 150138 states and 159890 transitions. Second operand 10 states. [2018-10-23 20:25:38,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:25:38,579 INFO L93 Difference]: Finished difference Result 361989 states and 385067 transitions. [2018-10-23 20:25:38,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-23 20:25:38,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 656 [2018-10-23 20:25:38,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:25:38,839 INFO L225 Difference]: With dead ends: 361989 [2018-10-23 20:25:38,839 INFO L226 Difference]: Without dead ends: 211851 [2018-10-23 20:25:38,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-10-23 20:25:39,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211851 states. [2018-10-23 20:25:40,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211851 to 127234. [2018-10-23 20:25:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127234 states. [2018-10-23 20:25:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127234 states to 127234 states and 133202 transitions. [2018-10-23 20:25:40,743 INFO L78 Accepts]: Start accepts. Automaton has 127234 states and 133202 transitions. Word has length 656 [2018-10-23 20:25:40,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:25:40,744 INFO L481 AbstractCegarLoop]: Abstraction has 127234 states and 133202 transitions. [2018-10-23 20:25:40,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 20:25:40,744 INFO L276 IsEmpty]: Start isEmpty. Operand 127234 states and 133202 transitions. [2018-10-23 20:25:40,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2018-10-23 20:25:40,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:25:40,764 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:25:40,764 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:25:40,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:25:40,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1866480563, now seen corresponding path program 1 times [2018-10-23 20:25:40,765 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:25:40,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:25:40,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:40,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:25:40,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:25:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 588 proven. 230 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-10-23 20:25:42,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:25:42,662 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:25:42,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:25:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:25:42,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:25:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 689 proven. 230 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-10-23 20:25:44,413 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:25:44,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-10-23 20:25:44,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:25:44,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:25:44,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:25:44,416 INFO L87 Difference]: Start difference. First operand 127234 states and 133202 transitions. Second operand 7 states. Received shutdown request... [2018-10-23 20:25:44,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:25:44,632 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:25:44,637 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:25:44,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:44 BoogieIcfgContainer [2018-10-23 20:25:44,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:25:44,638 INFO L168 Benchmark]: Toolchain (without parser) took 224731.02 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-23 20:25:44,639 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. [2018-10-23 20:25:44,640 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2438.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:25:44,641 INFO L168 Benchmark]: Boogie Procedure Inliner took 789.80 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:25:44,642 INFO L168 Benchmark]: Boogie Preprocessor took 589.47 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:25:44,642 INFO L168 Benchmark]: RCFGBuilder took 12624.70 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 239.1 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 44.2 MB). Peak memory consumption was 593.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:25:44,643 INFO L168 Benchmark]: TraceAbstraction took 208282.99 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -872.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-23 20:25:44,649 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 2438.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 789.80 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 589.47 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12624.70 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 239.1 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 44.2 MB). Peak memory consumption was 593.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208282.99 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -872.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 198). Cancelled while BasicCegarLoop was constructing difference of abstraction (127234states) and FLOYD_HOARE automaton (currently 3 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (249 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 208.2s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 176.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10309 SDtfs, 41865 SDslu, 3451 SDs, 0 SdLazy, 78027 SolverSat, 16588 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 143.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2019 GetRequests, 1961 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161250occurred in iteration=8, 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: 13.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 146544 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 7381 NumberOfCodeBlocks, 7381 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 7365 ConstructedInterpolants, 90 QuantifiedInterpolants, 12655159 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2421 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 8991/9540 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown