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/Problem15_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:37:13,692 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:37:13,694 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:37:13,710 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:37:13,710 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:37:13,711 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:37:13,712 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:37:13,715 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:37:13,717 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:37:13,719 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:37:13,720 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:37:13,721 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:37:13,723 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:37:13,726 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:37:13,728 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:37:13,728 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:37:13,735 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:37:13,739 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:37:13,741 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:37:13,746 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:37:13,747 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:37:13,749 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:37:13,751 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:37:13,759 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 16:37:13,784 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:37:13,784 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:37:13,786 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:37:13,786 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:37:13,786 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:37:13,788 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:37:13,788 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:37:13,788 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:37:13,788 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:37:13,788 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:37:13,789 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:37:13,789 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:37:13,789 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:37:13,789 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:37:13,789 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:37:13,790 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:37:13,790 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:37:13,790 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:37:13,790 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:37:13,790 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:37:13,790 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:37:13,791 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:37:13,791 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:37:13,791 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:37:13,791 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:37:13,791 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:37:13,792 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:37:13,792 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:37:13,834 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:37:13,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:37:13,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:37:13,856 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:37:13,856 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:37:13,857 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c [2018-10-24 16:37:13,910 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c471358a/5a212f6ebb6244ada26b2cf8f00dfa24/FLAG156d02834 [2018-10-24 16:37:14,549 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:37:14,550 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c [2018-10-24 16:37:14,572 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c471358a/5a212f6ebb6244ada26b2cf8f00dfa24/FLAG156d02834 [2018-10-24 16:37:14,591 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c471358a/5a212f6ebb6244ada26b2cf8f00dfa24 [2018-10-24 16:37:14,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:37:14,604 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:37:14,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:37:14,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:37:14,609 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:37:14,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:37:14" (1/1) ... [2018-10-24 16:37:14,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e2b640d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:14, skipping insertion in model container [2018-10-24 16:37:14,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:37:14" (1/1) ... [2018-10-24 16:37:14,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:37:14,709 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:37:15,514 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:37:15,518 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:37:15,992 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:37:16,016 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:37:16,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:16 WrapperNode [2018-10-24 16:37:16,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:37:16,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:37:16,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:37:16,020 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:37:16,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:16" (1/1) ... [2018-10-24 16:37:16,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:16" (1/1) ... [2018-10-24 16:37:16,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:37:16,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:37:16,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:37:16,463 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:37:16,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:16" (1/1) ... [2018-10-24 16:37:16,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:16" (1/1) ... [2018-10-24 16:37:16,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:16" (1/1) ... [2018-10-24 16:37:16,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:16" (1/1) ... [2018-10-24 16:37:16,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:16" (1/1) ... [2018-10-24 16:37:16,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:16" (1/1) ... [2018-10-24 16:37:16,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:16" (1/1) ... [2018-10-24 16:37:16,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:37:16,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:37:16,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:37:16,732 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:37:16,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:16" (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 16:37:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:37:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:37:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:37:26,338 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:37:26,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:37:26 BoogieIcfgContainer [2018-10-24 16:37:26,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:37:26,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:37:26,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:37:26,344 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:37:26,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:37:14" (1/3) ... [2018-10-24 16:37:26,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113420c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:37:26, skipping insertion in model container [2018-10-24 16:37:26,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:16" (2/3) ... [2018-10-24 16:37:26,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113420c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:37:26, skipping insertion in model container [2018-10-24 16:37:26,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:37:26" (3/3) ... [2018-10-24 16:37:26,348 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label46_true-unreach-call.c [2018-10-24 16:37:26,358 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:37:26,367 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:37:26,386 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:37:26,428 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:37:26,428 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:37:26,429 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:37:26,429 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:37:26,429 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:37:26,429 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:37:26,429 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:37:26,430 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:37:26,430 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:37:26,460 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-24 16:37:26,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-24 16:37:26,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:37:26,471 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] [2018-10-24 16:37:26,474 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:37:26,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:37:26,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1934902334, now seen corresponding path program 1 times [2018-10-24 16:37:26,483 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:37:26,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:37:26,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:37:26,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:37:26,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:37:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:37:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:37:27,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:37:27,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:37:27,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:37:27,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:37:27,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:37:27,030 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-10-24 16:37:35,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:37:35,239 INFO L93 Difference]: Finished difference Result 1473 states and 2723 transitions. [2018-10-24 16:37:35,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:37:35,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-10-24 16:37:35,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:37:35,270 INFO L225 Difference]: With dead ends: 1473 [2018-10-24 16:37:35,270 INFO L226 Difference]: Without dead ends: 1041 [2018-10-24 16:37:35,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:37:35,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2018-10-24 16:37:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1037. [2018-10-24 16:37:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-10-24 16:37:35,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1674 transitions. [2018-10-24 16:37:35,390 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1674 transitions. Word has length 44 [2018-10-24 16:37:35,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:37:35,390 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1674 transitions. [2018-10-24 16:37:35,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:37:35,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1674 transitions. [2018-10-24 16:37:35,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-24 16:37:35,399 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:37:35,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:35,400 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:37:35,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:37:35,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1247411675, now seen corresponding path program 1 times [2018-10-24 16:37:35,401 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:37:35,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:37:35,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:37:35,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:37:35,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:37:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:37:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:37:35,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:37:35,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:37:35,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:37:35,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:37:35,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:37:35,721 INFO L87 Difference]: Start difference. First operand 1037 states and 1674 transitions. Second operand 4 states. [2018-10-24 16:37:42,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:37:42,302 INFO L93 Difference]: Finished difference Result 3940 states and 6434 transitions. [2018-10-24 16:37:42,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:37:42,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2018-10-24 16:37:42,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:37:42,327 INFO L225 Difference]: With dead ends: 3940 [2018-10-24 16:37:42,327 INFO L226 Difference]: Without dead ends: 2905 [2018-10-24 16:37:42,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:37:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2018-10-24 16:37:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1939. [2018-10-24 16:37:42,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1939 states. [2018-10-24 16:37:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2819 transitions. [2018-10-24 16:37:42,415 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2819 transitions. Word has length 164 [2018-10-24 16:37:42,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:37:42,415 INFO L481 AbstractCegarLoop]: Abstraction has 1939 states and 2819 transitions. [2018-10-24 16:37:42,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:37:42,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2819 transitions. [2018-10-24 16:37:42,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-10-24 16:37:42,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:37:42,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:42,431 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:37:42,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:37:42,431 INFO L82 PathProgramCache]: Analyzing trace with hash 390759141, now seen corresponding path program 1 times [2018-10-24 16:37:42,433 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:37:42,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:37:42,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:37:42,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:37:42,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:37:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:37:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-10-24 16:37:43,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:37:43,133 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 16:37:43,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:37:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:37:43,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:37:43,453 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:37:43,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:37:43,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:37:43,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:37:43,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:37:43,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:37:43,485 INFO L87 Difference]: Start difference. First operand 1939 states and 2819 transitions. Second operand 4 states. [2018-10-24 16:37:52,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:37:52,864 INFO L93 Difference]: Finished difference Result 5981 states and 8477 transitions. [2018-10-24 16:37:52,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:37:52,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 315 [2018-10-24 16:37:52,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:37:52,887 INFO L225 Difference]: With dead ends: 5981 [2018-10-24 16:37:52,887 INFO L226 Difference]: Without dead ends: 4044 [2018-10-24 16:37:52,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:37:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2018-10-24 16:37:52,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2539. [2018-10-24 16:37:52,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2539 states. [2018-10-24 16:37:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2539 states to 2539 states and 3487 transitions. [2018-10-24 16:37:52,949 INFO L78 Accepts]: Start accepts. Automaton has 2539 states and 3487 transitions. Word has length 315 [2018-10-24 16:37:52,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:37:52,950 INFO L481 AbstractCegarLoop]: Abstraction has 2539 states and 3487 transitions. [2018-10-24 16:37:52,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:37:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2539 states and 3487 transitions. [2018-10-24 16:37:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-10-24 16:37:52,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:37:52,956 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:37:52,956 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:37:52,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:37:52,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1752514879, now seen corresponding path program 1 times [2018-10-24 16:37:52,957 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:37:52,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:37:52,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:37:52,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:37:52,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:37:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:37:53,576 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-24 16:37:53,907 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-24 16:37:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-10-24 16:37:54,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:37:54,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:37:54,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:37:54,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:37:54,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:37:54,254 INFO L87 Difference]: Start difference. First operand 2539 states and 3487 transitions. Second operand 5 states. [2018-10-24 16:38:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:00,511 INFO L93 Difference]: Finished difference Result 6278 states and 8294 transitions. [2018-10-24 16:38:00,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:38:00,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2018-10-24 16:38:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:00,529 INFO L225 Difference]: With dead ends: 6278 [2018-10-24 16:38:00,530 INFO L226 Difference]: Without dead ends: 3741 [2018-10-24 16:38:00,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:38:00,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2018-10-24 16:38:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 3440. [2018-10-24 16:38:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3440 states. [2018-10-24 16:38:00,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 4448 transitions. [2018-10-24 16:38:00,595 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 4448 transitions. Word has length 323 [2018-10-24 16:38:00,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:00,596 INFO L481 AbstractCegarLoop]: Abstraction has 3440 states and 4448 transitions. [2018-10-24 16:38:00,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:38:00,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 4448 transitions. [2018-10-24 16:38:00,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-10-24 16:38:00,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:00,604 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:38:00,604 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:00,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:00,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1215908209, now seen corresponding path program 1 times [2018-10-24 16:38:00,605 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:00,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:00,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:00,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:00,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:01,227 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:38:01,819 WARN L179 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-10-24 16:38:02,148 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2018-10-24 16:38:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 93 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:38:02,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:38:02,496 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 16:38:02,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:02,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:38:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:38:02,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:38:02,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-10-24 16:38:02,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:38:02,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:38:02,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:38:02,887 INFO L87 Difference]: Start difference. First operand 3440 states and 4448 transitions. Second operand 9 states. [2018-10-24 16:38:16,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:16,482 INFO L93 Difference]: Finished difference Result 8444 states and 10930 transitions. [2018-10-24 16:38:16,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 16:38:16,489 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 397 [2018-10-24 16:38:16,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:16,512 INFO L225 Difference]: With dead ends: 8444 [2018-10-24 16:38:16,512 INFO L226 Difference]: Without dead ends: 5006 [2018-10-24 16:38:16,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 400 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:38:16,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2018-10-24 16:38:16,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 4645. [2018-10-24 16:38:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4645 states. [2018-10-24 16:38:16,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4645 states to 4645 states and 5663 transitions. [2018-10-24 16:38:16,607 INFO L78 Accepts]: Start accepts. Automaton has 4645 states and 5663 transitions. Word has length 397 [2018-10-24 16:38:16,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:16,608 INFO L481 AbstractCegarLoop]: Abstraction has 4645 states and 5663 transitions. [2018-10-24 16:38:16,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:38:16,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4645 states and 5663 transitions. [2018-10-24 16:38:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-10-24 16:38:16,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:16,618 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:38:16,619 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:16,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:16,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1106948331, now seen corresponding path program 1 times [2018-10-24 16:38:16,619 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:16,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:16,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:16,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:16,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:17,197 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-24 16:38:17,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:38:17,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:38:17,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:38:17,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:38:17,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:38:17,199 INFO L87 Difference]: Start difference. First operand 4645 states and 5663 transitions. Second operand 4 states. [2018-10-24 16:38:23,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:23,385 INFO L93 Difference]: Finished difference Result 10191 states and 12538 transitions. [2018-10-24 16:38:23,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:38:23,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 416 [2018-10-24 16:38:23,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:23,408 INFO L225 Difference]: With dead ends: 10191 [2018-10-24 16:38:23,409 INFO L226 Difference]: Without dead ends: 5548 [2018-10-24 16:38:23,415 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 16:38:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2018-10-24 16:38:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 5546. [2018-10-24 16:38:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5546 states. [2018-10-24 16:38:23,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5546 states to 5546 states and 6603 transitions. [2018-10-24 16:38:23,508 INFO L78 Accepts]: Start accepts. Automaton has 5546 states and 6603 transitions. Word has length 416 [2018-10-24 16:38:23,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:23,509 INFO L481 AbstractCegarLoop]: Abstraction has 5546 states and 6603 transitions. [2018-10-24 16:38:23,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:38:23,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5546 states and 6603 transitions. [2018-10-24 16:38:23,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2018-10-24 16:38:23,522 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:23,522 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:38:23,523 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:23,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:23,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1134081088, now seen corresponding path program 1 times [2018-10-24 16:38:23,523 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:23,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:23,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:23,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:23,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:23,934 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-10-24 16:38:23,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:38:23,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:38:23,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:38:23,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:38:23,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:38:23,936 INFO L87 Difference]: Start difference. First operand 5546 states and 6603 transitions. Second operand 3 states. [2018-10-24 16:38:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:29,747 INFO L93 Difference]: Finished difference Result 12889 states and 15642 transitions. [2018-10-24 16:38:29,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:38:29,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 511 [2018-10-24 16:38:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:29,781 INFO L225 Difference]: With dead ends: 12889 [2018-10-24 16:38:29,781 INFO L226 Difference]: Without dead ends: 7345 [2018-10-24 16:38:29,788 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 16:38:29,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2018-10-24 16:38:30,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 7345. [2018-10-24 16:38:30,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7345 states. [2018-10-24 16:38:30,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7345 states to 7345 states and 8785 transitions. [2018-10-24 16:38:30,027 INFO L78 Accepts]: Start accepts. Automaton has 7345 states and 8785 transitions. Word has length 511 [2018-10-24 16:38:30,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:30,029 INFO L481 AbstractCegarLoop]: Abstraction has 7345 states and 8785 transitions. [2018-10-24 16:38:30,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:38:30,029 INFO L276 IsEmpty]: Start isEmpty. Operand 7345 states and 8785 transitions. [2018-10-24 16:38:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2018-10-24 16:38:30,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:30,057 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:38:30,057 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:30,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:30,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1637939412, now seen corresponding path program 1 times [2018-10-24 16:38:30,057 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:30,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:30,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:30,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:30,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:30,892 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-24 16:38:31,217 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-24 16:38:31,570 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 14 [2018-10-24 16:38:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 620 proven. 4 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2018-10-24 16:38:32,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:38:32,230 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 16:38:32,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:32,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:38:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 585 proven. 39 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2018-10-24 16:38:33,382 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:38:33,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-24 16:38:33,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:38:33,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:38:33,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:38:33,385 INFO L87 Difference]: Start difference. First operand 7345 states and 8785 transitions. Second operand 9 states. [2018-10-24 16:38:48,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:48,975 INFO L93 Difference]: Finished difference Result 20857 states and 24700 transitions. [2018-10-24 16:38:48,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 16:38:48,976 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 603 [2018-10-24 16:38:48,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:48,992 INFO L225 Difference]: With dead ends: 20857 [2018-10-24 16:38:48,992 INFO L226 Difference]: Without dead ends: 8795 [2018-10-24 16:38:49,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 600 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-10-24 16:38:49,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8795 states. [2018-10-24 16:38:49,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8795 to 5794. [2018-10-24 16:38:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5794 states. [2018-10-24 16:38:49,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5794 states to 5794 states and 6291 transitions. [2018-10-24 16:38:49,103 INFO L78 Accepts]: Start accepts. Automaton has 5794 states and 6291 transitions. Word has length 603 [2018-10-24 16:38:49,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:49,104 INFO L481 AbstractCegarLoop]: Abstraction has 5794 states and 6291 transitions. [2018-10-24 16:38:49,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:38:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5794 states and 6291 transitions. [2018-10-24 16:38:49,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2018-10-24 16:38:49,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:49,112 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:38:49,113 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:49,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:49,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1980651932, now seen corresponding path program 1 times [2018-10-24 16:38:49,113 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:49,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:49,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:49,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:49,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-10-24 16:38:49,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:38:49,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:38:49,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:38:49,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:38:49,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:38:49,560 INFO L87 Difference]: Start difference. First operand 5794 states and 6291 transitions. Second operand 3 states. [2018-10-24 16:38:51,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:51,468 INFO L93 Difference]: Finished difference Result 11584 states and 12578 transitions. [2018-10-24 16:38:51,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:38:51,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 645 [2018-10-24 16:38:51,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:51,480 INFO L225 Difference]: With dead ends: 11584 [2018-10-24 16:38:51,481 INFO L226 Difference]: Without dead ends: 5792 [2018-10-24 16:38:51,486 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 16:38:51,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2018-10-24 16:38:51,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 5792. [2018-10-24 16:38:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5792 states. [2018-10-24 16:38:51,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5792 states to 5792 states and 6287 transitions. [2018-10-24 16:38:51,560 INFO L78 Accepts]: Start accepts. Automaton has 5792 states and 6287 transitions. Word has length 645 [2018-10-24 16:38:51,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:51,562 INFO L481 AbstractCegarLoop]: Abstraction has 5792 states and 6287 transitions. [2018-10-24 16:38:51,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:38:51,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5792 states and 6287 transitions. [2018-10-24 16:38:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2018-10-24 16:38:51,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:51,570 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 16:38:51,571 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:51,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:51,572 INFO L82 PathProgramCache]: Analyzing trace with hash 280923292, now seen corresponding path program 1 times [2018-10-24 16:38:51,572 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:51,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:51,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:51,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:51,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2018-10-24 16:38:52,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:38:52,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:38:52,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:38:52,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:38:52,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:38:52,180 INFO L87 Difference]: Start difference. First operand 5792 states and 6287 transitions. Second operand 3 states. [2018-10-24 16:38:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:55,277 INFO L93 Difference]: Finished difference Result 14594 states and 15823 transitions. [2018-10-24 16:38:55,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:38:55,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 672 [2018-10-24 16:38:55,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:55,306 INFO L225 Difference]: With dead ends: 14594 [2018-10-24 16:38:55,306 INFO L226 Difference]: Without dead ends: 8495 [2018-10-24 16:38:55,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 16:38:55,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8495 states. [2018-10-24 16:38:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8495 to 7583. [2018-10-24 16:38:55,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7583 states. [2018-10-24 16:38:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7583 states to 7583 states and 8166 transitions. [2018-10-24 16:38:55,420 INFO L78 Accepts]: Start accepts. Automaton has 7583 states and 8166 transitions. Word has length 672 [2018-10-24 16:38:55,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:55,421 INFO L481 AbstractCegarLoop]: Abstraction has 7583 states and 8166 transitions. [2018-10-24 16:38:55,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:38:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 7583 states and 8166 transitions. [2018-10-24 16:38:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2018-10-24 16:38:55,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:55,433 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:38:55,433 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:55,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:55,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1634190814, now seen corresponding path program 1 times [2018-10-24 16:38:55,434 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:55,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:55,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:55,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:55,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2018-10-24 16:38:56,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:38:56,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:38:56,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:38:56,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:38:56,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:38:56,133 INFO L87 Difference]: Start difference. First operand 7583 states and 8166 transitions. Second operand 5 states. [2018-10-24 16:38:58,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:58,987 INFO L93 Difference]: Finished difference Result 16333 states and 17545 transitions. [2018-10-24 16:38:58,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:38:58,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 705 [2018-10-24 16:38:58,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:58,999 INFO L225 Difference]: With dead ends: 16333 [2018-10-24 16:38:59,000 INFO L226 Difference]: Without dead ends: 8150 [2018-10-24 16:38:59,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:38:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8150 states. [2018-10-24 16:38:59,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8150 to 6650. [2018-10-24 16:38:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6650 states. [2018-10-24 16:38:59,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6650 states to 6650 states and 6936 transitions. [2018-10-24 16:38:59,099 INFO L78 Accepts]: Start accepts. Automaton has 6650 states and 6936 transitions. Word has length 705 [2018-10-24 16:38:59,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:59,100 INFO L481 AbstractCegarLoop]: Abstraction has 6650 states and 6936 transitions. [2018-10-24 16:38:59,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:38:59,100 INFO L276 IsEmpty]: Start isEmpty. Operand 6650 states and 6936 transitions. [2018-10-24 16:38:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2018-10-24 16:38:59,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:59,117 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 16:38:59,117 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:59,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:59,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2037198302, now seen corresponding path program 1 times [2018-10-24 16:38:59,118 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:59,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:59,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:59,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:59,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 718 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-10-24 16:39:00,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:39:00,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:39:00,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:39:00,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:39:00,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:39:00,221 INFO L87 Difference]: Start difference. First operand 6650 states and 6936 transitions. Second operand 3 states. [2018-10-24 16:39:02,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:02,180 INFO L93 Difference]: Finished difference Result 15097 states and 15800 transitions. [2018-10-24 16:39:02,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:39:02,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 920 [2018-10-24 16:39:02,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:02,189 INFO L225 Difference]: With dead ends: 15097 [2018-10-24 16:39:02,189 INFO L226 Difference]: Without dead ends: 8749 [2018-10-24 16:39:02,196 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 16:39:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8749 states. [2018-10-24 16:39:02,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8749 to 8149. [2018-10-24 16:39:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8149 states. [2018-10-24 16:39:02,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8149 states to 8149 states and 8478 transitions. [2018-10-24 16:39:02,296 INFO L78 Accepts]: Start accepts. Automaton has 8149 states and 8478 transitions. Word has length 920 [2018-10-24 16:39:02,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:02,297 INFO L481 AbstractCegarLoop]: Abstraction has 8149 states and 8478 transitions. [2018-10-24 16:39:02,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:39:02,297 INFO L276 IsEmpty]: Start isEmpty. Operand 8149 states and 8478 transitions. [2018-10-24 16:39:02,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2018-10-24 16:39:02,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:39:02,318 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:39:02,318 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:39:02,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:39:02,318 INFO L82 PathProgramCache]: Analyzing trace with hash 103677985, now seen corresponding path program 1 times [2018-10-24 16:39:02,319 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:39:02,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:39:02,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:02,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:02,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 42 proven. 717 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-10-24 16:39:04,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:39:04,807 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 16:39:04,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:05,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:39:06,233 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_~a0~0_825 Int)) (and (<= (+ v_~a0~0_825 44) 0) (<= (mod v_~a0~0_825 299926) (+ c_~a0~0 300074)) (<= 0 v_~a0~0_825))) (exists ((v_prenex_1 Int)) (let ((.cse0 (mod v_prenex_1 299926))) (and (not (= .cse0 0)) (< v_prenex_1 0) (<= (+ v_prenex_1 44) 0) (<= .cse0 (+ c_~a0~0 600000))))) (exists ((v_prenex_2 Int)) (let ((.cse1 (mod v_prenex_2 299926))) (and (= .cse1 0) (<= (+ v_prenex_2 44) 0) (<= .cse1 (+ c_~a0~0 300074)))))) is different from true [2018-10-24 16:39:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 483 trivial. 634 not checked. [2018-10-24 16:39:10,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:39:10,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-24 16:39:10,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:39:10,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:39:10,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=35, Unknown=1, NotChecked=12, Total=72 [2018-10-24 16:39:10,555 INFO L87 Difference]: Start difference. First operand 8149 states and 8478 transitions. Second operand 9 states. [2018-10-24 16:39:18,633 WARN L179 SmtUtils]: Spent 4.90 s on a formula simplification. DAG size of input: 39 DAG size of output: 19 [2018-10-24 16:39:23,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:23,049 INFO L93 Difference]: Finished difference Result 15611 states and 16209 transitions. [2018-10-24 16:39:23,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 16:39:23,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 941 [2018-10-24 16:39:23,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:23,051 INFO L225 Difference]: With dead ends: 15611 [2018-10-24 16:39:23,051 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 16:39:23,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 938 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=35, Invalid=57, Unknown=2, NotChecked=16, Total=110 [2018-10-24 16:39:23,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 16:39:23,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 16:39:23,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 16:39:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 16:39:23,061 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 941 [2018-10-24 16:39:23,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:23,061 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 16:39:23,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:39:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 16:39:23,062 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 16:39:23,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 16:39:23,113 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,117 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,135 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,159 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,191 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,215 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,231 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,309 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,317 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 202 [2018-10-24 16:39:23,348 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,351 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,369 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,393 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,394 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,428 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,452 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,468 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,554 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 202 [2018-10-24 16:39:23,619 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,646 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,694 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:39:23,699 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 175 [2018-10-24 16:41:04,455 WARN L179 SmtUtils]: Spent 1.68 m on a formula simplification. DAG size of input: 186 DAG size of output: 69 Received shutdown request... [2018-10-24 16:41:21,216 WARN L187 SmtUtils]: Removed 32 from assertion stack [2018-10-24 16:41:21,217 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-24 16:41:21,218 INFO L168 Benchmark]: Toolchain (without parser) took 246615.17 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -274.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 16:41:21,219 INFO L168 Benchmark]: CDTParser took 0.21 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 16:41:21,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1413.83 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:41:21,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 442.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -874.7 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:41:21,221 INFO L168 Benchmark]: Boogie Preprocessor took 269.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:41:21,223 INFO L168 Benchmark]: RCFGBuilder took 9607.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 312.8 MB). Peak memory consumption was 312.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:41:21,226 INFO L168 Benchmark]: TraceAbstraction took 234876.57 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 152.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 16:41:21,233 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1413.83 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 442.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -874.7 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 269.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9607.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 312.8 MB). Peak memory consumption was 312.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234876.57 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 152.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 136]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 186. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown