java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:15:59,797 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:15:59,799 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:15:59,810 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:15:59,811 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:15:59,812 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:15:59,813 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:15:59,815 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:15:59,816 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:15:59,817 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:15:59,818 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:15:59,818 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:15:59,819 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:15:59,820 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:15:59,821 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:15:59,822 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:15:59,823 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:15:59,825 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:15:59,827 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:15:59,828 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:15:59,829 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:15:59,831 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:15:59,834 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:15:59,834 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:15:59,834 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:15:59,835 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:15:59,836 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:15:59,837 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:15:59,838 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:15:59,839 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:15:59,839 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:15:59,840 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:15:59,842 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 [2018-10-26 19:15:59,860 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:15:59,861 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:15:59,862 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:15:59,862 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:15:59,863 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:15:59,863 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:15:59,863 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:15:59,863 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:15:59,863 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:15:59,866 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:15:59,867 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:15:59,867 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:15:59,867 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:15:59,867 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:15:59,867 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:15:59,868 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:15:59,868 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:15:59,868 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:15:59,868 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:15:59,868 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:15:59,870 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:15:59,870 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:15:59,870 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:15:59,871 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:15:59,871 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:15:59,871 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:15:59,871 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:15:59,871 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:15:59,928 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:15:59,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:15:59,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:15:59,951 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:15:59,951 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:15:59,952 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c [2018-10-26 19:16:00,023 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/223943419/aaa1b0a2cb1143f0887e4f7da6a81a5b/FLAGb4abe537f [2018-10-26 19:16:00,877 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:16:00,878 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c [2018-10-26 19:16:00,926 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/223943419/aaa1b0a2cb1143f0887e4f7da6a81a5b/FLAGb4abe537f [2018-10-26 19:16:00,948 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/223943419/aaa1b0a2cb1143f0887e4f7da6a81a5b [2018-10-26 19:16:00,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:16:00,963 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:16:00,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:16:00,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:16:00,971 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:16:00,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:16:00" (1/1) ... [2018-10-26 19:16:00,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b0e4d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:00, skipping insertion in model container [2018-10-26 19:16:00,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:16:00" (1/1) ... [2018-10-26 19:16:00,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:16:01,174 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:16:02,681 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:16:02,688 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:16:03,455 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:16:03,492 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:16:03,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:03 WrapperNode [2018-10-26 19:16:03,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:16:03,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:16:03,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:16:03,495 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:16:03,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:03" (1/1) ... [2018-10-26 19:16:03,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:03" (1/1) ... [2018-10-26 19:16:04,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:16:04,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:16:04,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:16:04,350 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:16:04,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:03" (1/1) ... [2018-10-26 19:16:04,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:03" (1/1) ... [2018-10-26 19:16:04,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:03" (1/1) ... [2018-10-26 19:16:04,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:03" (1/1) ... [2018-10-26 19:16:04,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:03" (1/1) ... [2018-10-26 19:16:04,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:03" (1/1) ... [2018-10-26 19:16:04,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:03" (1/1) ... [2018-10-26 19:16:04,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:16:04,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:16:04,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:16:04,893 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:16:04,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:03" (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 [2018-10-26 19:16:04,959 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:16:04,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:16:04,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:16:18,354 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:16:18,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:16:18 BoogieIcfgContainer [2018-10-26 19:16:18,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:16:18,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:16:18,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:16:18,359 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:16:18,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:16:00" (1/3) ... [2018-10-26 19:16:18,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4f76ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:16:18, skipping insertion in model container [2018-10-26 19:16:18,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:03" (2/3) ... [2018-10-26 19:16:18,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4f76ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:16:18, skipping insertion in model container [2018-10-26 19:16:18,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:16:18" (3/3) ... [2018-10-26 19:16:18,365 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label36_false-unreach-call.c [2018-10-26 19:16:18,375 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:16:18,384 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:16:18,402 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:16:18,451 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:16:18,452 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:16:18,452 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:16:18,452 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:16:18,452 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:16:18,452 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:16:18,453 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:16:18,453 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:16:18,453 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:16:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 19:16:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 19:16:18,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:16:18,500 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:16:18,503 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:16:18,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:16:18,509 INFO L82 PathProgramCache]: Analyzing trace with hash -643220670, now seen corresponding path program 1 times [2018-10-26 19:16:18,511 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:16:18,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:16:18,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:18,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:18,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:16:18,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:16:18,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:16:18,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:16:18,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:16:18,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:16:18,909 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-26 19:16:32,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:16:32,829 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-26 19:16:32,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:16:32,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-10-26 19:16:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:16:32,875 INFO L225 Difference]: With dead ends: 3896 [2018-10-26 19:16:32,875 INFO L226 Difference]: Without dead ends: 2790 [2018-10-26 19:16:32,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:16:32,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-26 19:16:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-26 19:16:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-26 19:16:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-26 19:16:33,030 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 12 [2018-10-26 19:16:33,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:16:33,031 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-26 19:16:33,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:16:33,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-26 19:16:33,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-26 19:16:33,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:16:33,035 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:16:33,035 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:16:33,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:16:33,036 INFO L82 PathProgramCache]: Analyzing trace with hash 496408234, now seen corresponding path program 1 times [2018-10-26 19:16:33,036 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:16:33,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:16:33,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:33,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:33,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:16:33,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:16:33,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:16:33,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:16:33,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:16:33,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:16:33,945 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-26 19:16:34,205 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-26 19:16:51,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:16:51,230 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-26 19:16:51,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:16:51,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2018-10-26 19:16:51,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:16:51,257 INFO L225 Difference]: With dead ends: 7061 [2018-10-26 19:16:51,257 INFO L226 Difference]: Without dead ends: 5118 [2018-10-26 19:16:51,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:16:51,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-26 19:16:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-26 19:16:51,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-26 19:16:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-26 19:16:51,367 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 78 [2018-10-26 19:16:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:16:51,368 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-26 19:16:51,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:16:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-26 19:16:51,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-26 19:16:51,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:16:51,374 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:16:51,374 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:16:51,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:16:51,375 INFO L82 PathProgramCache]: Analyzing trace with hash -268071187, now seen corresponding path program 1 times [2018-10-26 19:16:51,375 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:16:51,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:16:51,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:51,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:51,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:16:51,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:16:51,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:16:51,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:16:51,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:16:51,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:16:51,555 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 3 states. [2018-10-26 19:16:57,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:16:57,138 INFO L93 Difference]: Finished difference Result 10220 states and 15517 transitions. [2018-10-26 19:16:57,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:16:57,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2018-10-26 19:16:57,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:16:57,177 INFO L225 Difference]: With dead ends: 10220 [2018-10-26 19:16:57,178 INFO L226 Difference]: Without dead ends: 5893 [2018-10-26 19:16:57,185 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 [2018-10-26 19:16:57,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2018-10-26 19:16:57,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 5892. [2018-10-26 19:16:57,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5892 states. [2018-10-26 19:16:57,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5892 states to 5892 states and 7437 transitions. [2018-10-26 19:16:57,290 INFO L78 Accepts]: Start accepts. Automaton has 5892 states and 7437 transitions. Word has length 138 [2018-10-26 19:16:57,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:16:57,291 INFO L481 AbstractCegarLoop]: Abstraction has 5892 states and 7437 transitions. [2018-10-26 19:16:57,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:16:57,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5892 states and 7437 transitions. [2018-10-26 19:16:57,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-26 19:16:57,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:16:57,295 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:16:57,296 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:16:57,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:16:57,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1702259751, now seen corresponding path program 1 times [2018-10-26 19:16:57,296 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:16:57,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:16:57,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:57,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:57,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 19:16:57,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:16:57,520 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 [2018-10-26 19:16:57,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:57,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:16:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:16:57,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:16:57,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 19:16:57,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:16:57,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:16:57,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:16:57,742 INFO L87 Difference]: Start difference. First operand 5892 states and 7437 transitions. Second operand 5 states. [2018-10-26 19:17:12,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:17:12,610 INFO L93 Difference]: Finished difference Result 20501 states and 27031 transitions. [2018-10-26 19:17:12,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:17:12,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2018-10-26 19:17:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:17:12,685 INFO L225 Difference]: With dead ends: 20501 [2018-10-26 19:17:12,685 INFO L226 Difference]: Without dead ends: 15399 [2018-10-26 19:17:12,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:17:12,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15399 states. [2018-10-26 19:17:12,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15399 to 10627. [2018-10-26 19:17:12,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10627 states. [2018-10-26 19:17:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10627 states to 10627 states and 13141 transitions. [2018-10-26 19:17:13,143 INFO L78 Accepts]: Start accepts. Automaton has 10627 states and 13141 transitions. Word has length 177 [2018-10-26 19:17:13,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:17:13,143 INFO L481 AbstractCegarLoop]: Abstraction has 10627 states and 13141 transitions. [2018-10-26 19:17:13,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:17:13,144 INFO L276 IsEmpty]: Start isEmpty. Operand 10627 states and 13141 transitions. [2018-10-26 19:17:13,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-26 19:17:13,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:17:13,147 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:17:13,151 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:17:13,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:17:13,152 INFO L82 PathProgramCache]: Analyzing trace with hash -507230826, now seen corresponding path program 1 times [2018-10-26 19:17:13,152 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:17:13,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:17:13,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:13,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:17:13,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:17:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-26 19:17:13,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:17:13,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 19:17:13,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:17:13,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:17:13,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:17:13,404 INFO L87 Difference]: Start difference. First operand 10627 states and 13141 transitions. Second operand 3 states. [2018-10-26 19:17:19,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:17:19,177 INFO L93 Difference]: Finished difference Result 28343 states and 35767 transitions. [2018-10-26 19:17:19,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:17:19,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2018-10-26 19:17:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:17:19,215 INFO L225 Difference]: With dead ends: 28343 [2018-10-26 19:17:19,215 INFO L226 Difference]: Without dead ends: 18506 [2018-10-26 19:17:19,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:17:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18506 states. [2018-10-26 19:17:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18506 to 18505. [2018-10-26 19:17:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18505 states. [2018-10-26 19:17:19,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18505 states to 18505 states and 22008 transitions. [2018-10-26 19:17:19,495 INFO L78 Accepts]: Start accepts. Automaton has 18505 states and 22008 transitions. Word has length 188 [2018-10-26 19:17:19,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:17:19,495 INFO L481 AbstractCegarLoop]: Abstraction has 18505 states and 22008 transitions. [2018-10-26 19:17:19,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:17:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 18505 states and 22008 transitions. [2018-10-26 19:17:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-26 19:17:19,500 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:17:19,500 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:17:19,500 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:17:19,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:17:19,501 INFO L82 PathProgramCache]: Analyzing trace with hash 191537317, now seen corresponding path program 1 times [2018-10-26 19:17:19,501 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:17:19,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:17:19,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:19,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:17:19,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:17:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-26 19:17:19,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:17:19,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:17:19,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:17:19,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:17:19,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:17:19,933 INFO L87 Difference]: Start difference. First operand 18505 states and 22008 transitions. Second operand 5 states. [2018-10-26 19:17:35,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:17:35,188 INFO L93 Difference]: Finished difference Result 82743 states and 99665 transitions. [2018-10-26 19:17:35,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:17:35,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2018-10-26 19:17:35,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:17:35,311 INFO L225 Difference]: With dead ends: 82743 [2018-10-26 19:17:35,311 INFO L226 Difference]: Without dead ends: 63436 [2018-10-26 19:17:35,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:17:35,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63436 states. [2018-10-26 19:17:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63436 to 62622. [2018-10-26 19:17:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62622 states. [2018-10-26 19:17:36,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62622 states to 62622 states and 70799 transitions. [2018-10-26 19:17:36,184 INFO L78 Accepts]: Start accepts. Automaton has 62622 states and 70799 transitions. Word has length 226 [2018-10-26 19:17:36,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:17:36,185 INFO L481 AbstractCegarLoop]: Abstraction has 62622 states and 70799 transitions. [2018-10-26 19:17:36,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:17:36,185 INFO L276 IsEmpty]: Start isEmpty. Operand 62622 states and 70799 transitions. [2018-10-26 19:17:36,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-10-26 19:17:36,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:17:36,194 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:17:36,194 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:17:36,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:17:36,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1083857174, now seen corresponding path program 1 times [2018-10-26 19:17:36,195 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:17:36,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:17:36,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:36,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:17:36,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:17:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-26 19:17:36,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:17:36,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:17:36,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:17:36,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:17:36,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:17:36,885 INFO L87 Difference]: Start difference. First operand 62622 states and 70799 transitions. Second operand 4 states. [2018-10-26 19:17:46,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:17:46,093 INFO L93 Difference]: Finished difference Result 129949 states and 147498 transitions. [2018-10-26 19:17:46,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:17:46,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2018-10-26 19:17:46,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:17:46,190 INFO L225 Difference]: With dead ends: 129949 [2018-10-26 19:17:46,190 INFO L226 Difference]: Without dead ends: 68117 [2018-10-26 19:17:46,250 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 [2018-10-26 19:17:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68117 states. [2018-10-26 19:17:46,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68117 to 68116. [2018-10-26 19:17:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68116 states. [2018-10-26 19:17:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68116 states to 68116 states and 74519 transitions. [2018-10-26 19:17:47,077 INFO L78 Accepts]: Start accepts. Automaton has 68116 states and 74519 transitions. Word has length 329 [2018-10-26 19:17:47,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:17:47,078 INFO L481 AbstractCegarLoop]: Abstraction has 68116 states and 74519 transitions. [2018-10-26 19:17:47,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:17:47,079 INFO L276 IsEmpty]: Start isEmpty. Operand 68116 states and 74519 transitions. [2018-10-26 19:17:47,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2018-10-26 19:17:47,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:17:47,115 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:17:47,116 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:17:47,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:17:47,116 INFO L82 PathProgramCache]: Analyzing trace with hash 212774782, now seen corresponding path program 1 times [2018-10-26 19:17:47,116 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:17:47,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:17:47,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:47,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:17:47,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:17:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-10-26 19:17:48,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:17:48,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:17:48,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:17:48,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:17:48,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:17:48,073 INFO L87 Difference]: Start difference. First operand 68116 states and 74519 transitions. Second operand 5 states. [2018-10-26 19:18:09,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:09,227 INFO L93 Difference]: Finished difference Result 251505 states and 273949 transitions. [2018-10-26 19:18:09,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:18:09,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 557 [2018-10-26 19:18:09,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:09,414 INFO L225 Difference]: With dead ends: 251505 [2018-10-26 19:18:09,414 INFO L226 Difference]: Without dead ends: 184179 [2018-10-26 19:18:09,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:18:09,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184179 states. [2018-10-26 19:18:10,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184179 to 170629. [2018-10-26 19:18:10,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170629 states. [2018-10-26 19:18:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170629 states to 170629 states and 183745 transitions. [2018-10-26 19:18:11,108 INFO L78 Accepts]: Start accepts. Automaton has 170629 states and 183745 transitions. Word has length 557 [2018-10-26 19:18:11,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:11,108 INFO L481 AbstractCegarLoop]: Abstraction has 170629 states and 183745 transitions. [2018-10-26 19:18:11,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:18:11,109 INFO L276 IsEmpty]: Start isEmpty. Operand 170629 states and 183745 transitions. [2018-10-26 19:18:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2018-10-26 19:18:11,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:11,147 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:18:11,147 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:11,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:11,148 INFO L82 PathProgramCache]: Analyzing trace with hash -396182786, now seen corresponding path program 1 times [2018-10-26 19:18:11,148 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:18:11,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:18:11,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:11,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:11,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:11,598 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 19:18:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-26 19:18:12,746 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:18:12,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:18:12,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:18:12,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:18:12,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:18:12,747 INFO L87 Difference]: Start difference. First operand 170629 states and 183745 transitions. Second operand 4 states. [2018-10-26 19:18:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:21,534 INFO L93 Difference]: Finished difference Result 350713 states and 377543 transitions. [2018-10-26 19:18:21,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:18:21,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 598 [2018-10-26 19:18:21,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:21,755 INFO L225 Difference]: With dead ends: 350713 [2018-10-26 19:18:21,755 INFO L226 Difference]: Without dead ends: 163481 [2018-10-26 19:18:21,864 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 [2018-10-26 19:18:22,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163481 states. [2018-10-26 19:18:24,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163481 to 154812. [2018-10-26 19:18:24,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154812 states. [2018-10-26 19:18:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154812 states to 154812 states and 165688 transitions. [2018-10-26 19:18:24,325 INFO L78 Accepts]: Start accepts. Automaton has 154812 states and 165688 transitions. Word has length 598 [2018-10-26 19:18:24,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:24,326 INFO L481 AbstractCegarLoop]: Abstraction has 154812 states and 165688 transitions. [2018-10-26 19:18:24,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:18:24,326 INFO L276 IsEmpty]: Start isEmpty. Operand 154812 states and 165688 transitions. [2018-10-26 19:18:24,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2018-10-26 19:18:24,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:24,349 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:18:24,349 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:24,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:24,350 INFO L82 PathProgramCache]: Analyzing trace with hash -881230806, now seen corresponding path program 1 times [2018-10-26 19:18:24,350 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:18:24,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:18:24,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:24,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:24,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:24,898 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 776 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-10-26 19:18:24,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:18:24,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:18:24,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:18:24,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:18:24,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:18:24,900 INFO L87 Difference]: Start difference. First operand 154812 states and 165688 transitions. Second operand 4 states. [2018-10-26 19:18:37,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:37,362 INFO L93 Difference]: Finished difference Result 337220 states and 361057 transitions. [2018-10-26 19:18:37,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:18:37,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 647 [2018-10-26 19:18:37,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:37,565 INFO L225 Difference]: With dead ends: 337220 [2018-10-26 19:18:37,565 INFO L226 Difference]: Without dead ends: 181617 [2018-10-26 19:18:37,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:18:37,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181617 states. [2018-10-26 19:18:39,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181617 to 178431. [2018-10-26 19:18:39,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178431 states. [2018-10-26 19:18:39,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178431 states to 178431 states and 187451 transitions. [2018-10-26 19:18:39,245 INFO L78 Accepts]: Start accepts. Automaton has 178431 states and 187451 transitions. Word has length 647 [2018-10-26 19:18:39,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:39,245 INFO L481 AbstractCegarLoop]: Abstraction has 178431 states and 187451 transitions. [2018-10-26 19:18:39,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:18:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 178431 states and 187451 transitions. [2018-10-26 19:18:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2018-10-26 19:18:39,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:39,268 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:18:39,268 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:39,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:39,269 INFO L82 PathProgramCache]: Analyzing trace with hash -416570515, now seen corresponding path program 1 times [2018-10-26 19:18:39,269 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:18:39,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:18:39,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:39,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:39,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 646 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-26 19:18:41,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:18:41,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:18:41,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:18:41,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:18:41,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:18:41,302 INFO L87 Difference]: Start difference. First operand 178431 states and 187451 transitions. Second operand 4 states. [2018-10-26 19:18:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:54,255 INFO L93 Difference]: Finished difference Result 390824 states and 410852 transitions. [2018-10-26 19:18:54,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:18:54,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 658 [2018-10-26 19:18:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:54,527 INFO L225 Difference]: With dead ends: 390824 [2018-10-26 19:18:54,527 INFO L226 Difference]: Without dead ends: 213183 [2018-10-26 19:18:54,603 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 [2018-10-26 19:18:54,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213183 states. [2018-10-26 19:18:57,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213183 to 209167. [2018-10-26 19:18:57,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209167 states. [2018-10-26 19:18:58,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209167 states to 209167 states and 219542 transitions. [2018-10-26 19:18:58,002 INFO L78 Accepts]: Start accepts. Automaton has 209167 states and 219542 transitions. Word has length 658 [2018-10-26 19:18:58,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:58,003 INFO L481 AbstractCegarLoop]: Abstraction has 209167 states and 219542 transitions. [2018-10-26 19:18:58,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:18:58,003 INFO L276 IsEmpty]: Start isEmpty. Operand 209167 states and 219542 transitions. [2018-10-26 19:18:58,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-10-26 19:18:58,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:58,021 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:18:58,021 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:58,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:58,022 INFO L82 PathProgramCache]: Analyzing trace with hash 277874540, now seen corresponding path program 1 times [2018-10-26 19:18:58,022 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:18:58,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:18:58,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:58,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:58,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-26 19:18:58,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:18:58,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:18:58,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:18:58,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:18:58,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:18:58,643 INFO L87 Difference]: Start difference. First operand 209167 states and 219542 transitions. Second operand 4 states. [2018-10-26 19:19:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:19:12,053 INFO L93 Difference]: Finished difference Result 414415 states and 435039 transitions. [2018-10-26 19:19:12,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:19:12,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 688 [2018-10-26 19:19:12,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:19:12,285 INFO L225 Difference]: With dead ends: 414415 [2018-10-26 19:19:12,286 INFO L226 Difference]: Without dead ends: 206038 [2018-10-26 19:19:12,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:19:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206038 states. [2018-10-26 19:19:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206038 to 193396. [2018-10-26 19:19:14,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193396 states. [2018-10-26 19:19:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193396 states to 193396 states and 199876 transitions. [2018-10-26 19:19:14,630 INFO L78 Accepts]: Start accepts. Automaton has 193396 states and 199876 transitions. Word has length 688 [2018-10-26 19:19:14,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:19:14,630 INFO L481 AbstractCegarLoop]: Abstraction has 193396 states and 199876 transitions. [2018-10-26 19:19:14,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:19:14,631 INFO L276 IsEmpty]: Start isEmpty. Operand 193396 states and 199876 transitions. [2018-10-26 19:19:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2018-10-26 19:19:14,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:19:14,654 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:19:14,654 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:19:14,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:19:14,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1260312391, now seen corresponding path program 1 times [2018-10-26 19:19:14,655 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:19:14,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:19:14,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:14,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:19:14,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:19:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 484 proven. 287 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-26 19:19:15,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:19:15,584 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 [2018-10-26 19:19:16,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:19:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:19:16,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:19:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 666 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2018-10-26 19:19:17,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:19:17,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 19:19:17,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:19:17,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:19:17,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:19:17,152 INFO L87 Difference]: Start difference. First operand 193396 states and 199876 transitions. Second operand 7 states. Received shutdown request... [2018-10-26 19:19:49,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-26 19:19:49,198 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:19:49,205 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:19:49,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:19:49 BoogieIcfgContainer [2018-10-26 19:19:49,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:19:49,207 INFO L168 Benchmark]: Toolchain (without parser) took 228244.85 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -652.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-26 19:19:49,208 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-26 19:19:49,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2528.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-10-26 19:19:49,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 854.69 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 833.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-26 19:19:49,211 INFO L168 Benchmark]: Boogie Preprocessor took 542.95 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 81.1 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2018-10-26 19:19:49,212 INFO L168 Benchmark]: RCFGBuilder took 13462.38 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 229.6 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 42.0 MB). Peak memory consumption was 577.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:19:49,213 INFO L168 Benchmark]: TraceAbstraction took 210850.04 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 2.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-26 19:19:49,218 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2528.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 854.69 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 833.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 542.95 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 81.1 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13462.38 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 229.6 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 42.0 MB). Peak memory consumption was 577.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210850.04 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 2.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 45). Cancelled while BasicCegarLoop was constructing difference of abstraction (193396states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (314325 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 210.7s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 184.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9852 SDtfs, 37483 SDslu, 3208 SDs, 0 SdLazy, 75024 SolverSat, 16721 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 151.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1027 GetRequests, 982 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209167occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 48498 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 6055 NumberOfCodeBlocks, 6055 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 6040 ConstructedInterpolants, 90 QuantifiedInterpolants, 7461361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1248 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 6222/6575 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown