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_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:18:25,694 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:18:25,696 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:18:25,714 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:18:25,715 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:18:25,717 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:18:25,718 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:18:25,720 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:18:25,722 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:18:25,731 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:18:25,732 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:18:25,733 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:18:25,734 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:18:25,735 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:18:25,736 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:18:25,737 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:18:25,741 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:18:25,744 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:18:25,749 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:18:25,752 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:18:25,753 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:18:25,755 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:18:25,758 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:18:25,759 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:18:25,759 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:18:25,760 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:18:25,761 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:18:25,762 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:18:25,762 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:18:25,763 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:18:25,764 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:18:25,767 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:18:25,771 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:18:25,795 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:18:25,796 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:18:25,797 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:18:25,797 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:18:25,798 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:18:25,798 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:18:25,798 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:18:25,799 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:18:25,799 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:18:25,799 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:18:25,799 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:18:25,800 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:18:25,800 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:18:25,800 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:18:25,800 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:18:25,800 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:18:25,801 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:18:25,801 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:18:25,804 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:18:25,804 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:18:25,804 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:18:25,805 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:18:25,805 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:18:25,805 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:18:25,805 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:18:25,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:18:25,806 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:18:25,806 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:18:25,856 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:18:25,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:18:25,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:18:25,876 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:18:25,876 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:18:25,877 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c [2018-10-23 20:18:25,953 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e3e2cf4cc/46c1db71f35641d484684b88a38e46a5/FLAG012122746 [2018-10-23 20:18:26,784 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:18:26,785 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c [2018-10-23 20:18:26,821 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e3e2cf4cc/46c1db71f35641d484684b88a38e46a5/FLAG012122746 [2018-10-23 20:18:26,838 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e3e2cf4cc/46c1db71f35641d484684b88a38e46a5 [2018-10-23 20:18:26,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:18:26,853 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:18:26,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:18:26,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:18:26,859 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:18:26,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:18:26" (1/1) ... [2018-10-23 20:18:26,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:26, skipping insertion in model container [2018-10-23 20:18:26,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:18:26" (1/1) ... [2018-10-23 20:18:26,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:18:27,079 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:18:28,563 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:18:28,567 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:18:29,316 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:18:29,353 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:18:29,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:29 WrapperNode [2018-10-23 20:18:29,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:18:29,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:18:29,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:18:29,355 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:18:29,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:29" (1/1) ... [2018-10-23 20:18:29,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:29" (1/1) ... [2018-10-23 20:18:30,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:18:30,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:18:30,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:18:30,229 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:18:30,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:29" (1/1) ... [2018-10-23 20:18:30,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:29" (1/1) ... [2018-10-23 20:18:30,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:29" (1/1) ... [2018-10-23 20:18:30,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:29" (1/1) ... [2018-10-23 20:18:30,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:29" (1/1) ... [2018-10-23 20:18:30,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:29" (1/1) ... [2018-10-23 20:18:30,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:29" (1/1) ... [2018-10-23 20:18:30,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:18:30,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:18:30,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:18:30,742 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:18:30,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:18:30,813 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:18:30,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:18:30,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:18:47,888 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:18:47,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:18:47 BoogieIcfgContainer [2018-10-23 20:18:47,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:18:47,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:18:47,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:18:47,893 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:18:47,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:18:26" (1/3) ... [2018-10-23 20:18:47,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370b9554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:18:47, skipping insertion in model container [2018-10-23 20:18:47,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:29" (2/3) ... [2018-10-23 20:18:47,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370b9554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:18:47, skipping insertion in model container [2018-10-23 20:18:47,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:18:47" (3/3) ... [2018-10-23 20:18:47,897 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label27_true-unreach-call.c [2018-10-23 20:18:47,906 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:18:47,917 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:18:47,934 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:18:47,980 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:18:47,981 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:18:47,981 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:18:47,981 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:18:47,981 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:18:47,982 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:18:47,982 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:18:47,982 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:18:47,982 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:18:48,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 20:18:48,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-23 20:18:48,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:48,048 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:18:48,050 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:48,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:48,056 INFO L82 PathProgramCache]: Analyzing trace with hash 279835594, now seen corresponding path program 1 times [2018-10-23 20:18:48,057 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:48,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:48,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:48,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:48,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:18:48,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:18:48,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:18:48,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:18:48,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:18:48,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:18:48,607 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 20:19:03,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:03,630 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-23 20:19:03,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:03,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-10-23 20:19:03,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:03,676 INFO L225 Difference]: With dead ends: 3896 [2018-10-23 20:19:03,677 INFO L226 Difference]: Without dead ends: 2790 [2018-10-23 20:19:03,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-23 20:19:03,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-23 20:19:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-23 20:19:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-23 20:19:03,842 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 46 [2018-10-23 20:19:03,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:03,843 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-23 20:19:03,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:03,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-23 20:19:03,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-23 20:19:03,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:03,848 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:19:03,848 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:03,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:03,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1500396782, now seen corresponding path program 1 times [2018-10-23 20:19:03,849 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:03,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:03,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:03,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:03,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:19:04,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:04,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:19:04,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:19:04,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:19:04,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:19:04,644 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-23 20:19:04,885 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 20:19:21,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:21,929 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-23 20:19:21,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:19:21,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-10-23 20:19:21,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:21,957 INFO L225 Difference]: With dead ends: 7061 [2018-10-23 20:19:21,957 INFO L226 Difference]: Without dead ends: 5118 [2018-10-23 20:19:21,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:19:21,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-23 20:19:22,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-23 20:19:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-23 20:19:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-23 20:19:22,065 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 112 [2018-10-23 20:19:22,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:22,066 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-23 20:19:22,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:19:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-23 20:19:22,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-23 20:19:22,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:22,072 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:19:22,072 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:22,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:22,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1448093035, now seen corresponding path program 1 times [2018-10-23 20:19:22,073 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:22,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:22,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:22,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:22,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-23 20:19:22,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:19:22,324 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:19:22,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:22,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:19:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:19:22,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:19:22,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 20:19:22,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:19:22,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:19:22,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:19:22,592 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 5 states. [2018-10-23 20:19:42,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:42,121 INFO L93 Difference]: Finished difference Result 17355 states and 27599 transitions. [2018-10-23 20:19:42,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:19:42,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2018-10-23 20:19:42,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:42,200 INFO L225 Difference]: With dead ends: 17355 [2018-10-23 20:19:42,200 INFO L226 Difference]: Without dead ends: 13028 [2018-10-23 20:19:42,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:19:42,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13028 states. [2018-10-23 20:19:42,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13028 to 12997. [2018-10-23 20:19:42,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12997 states. [2018-10-23 20:19:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12997 states to 12997 states and 16777 transitions. [2018-10-23 20:19:42,456 INFO L78 Accepts]: Start accepts. Automaton has 12997 states and 16777 transitions. Word has length 172 [2018-10-23 20:19:42,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:42,457 INFO L481 AbstractCegarLoop]: Abstraction has 12997 states and 16777 transitions. [2018-10-23 20:19:42,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:19:42,457 INFO L276 IsEmpty]: Start isEmpty. Operand 12997 states and 16777 transitions. [2018-10-23 20:19:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-23 20:19:42,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:42,467 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-10-23 20:19:42,468 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:42,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:42,468 INFO L82 PathProgramCache]: Analyzing trace with hash 991684463, now seen corresponding path program 1 times [2018-10-23 20:19:42,468 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:42,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:42,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:42,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:42,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 87 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-23 20:19:43,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:19:43,015 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:19:43,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:43,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:19:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:19:43,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:19:43,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 20:19:43,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:19:43,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:19:43,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:19:43,292 INFO L87 Difference]: Start difference. First operand 12997 states and 16777 transitions. Second operand 5 states. [2018-10-23 20:19:59,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:59,609 INFO L93 Difference]: Finished difference Result 47309 states and 60643 transitions. [2018-10-23 20:19:59,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:19:59,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2018-10-23 20:19:59,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:59,702 INFO L225 Difference]: With dead ends: 47309 [2018-10-23 20:19:59,702 INFO L226 Difference]: Without dead ends: 35102 [2018-10-23 20:19:59,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:19:59,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35102 states. [2018-10-23 20:20:00,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35102 to 27181. [2018-10-23 20:20:00,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27181 states. [2018-10-23 20:20:00,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27181 states to 27181 states and 33016 transitions. [2018-10-23 20:20:00,146 INFO L78 Accepts]: Start accepts. Automaton has 27181 states and 33016 transitions. Word has length 211 [2018-10-23 20:20:00,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:00,146 INFO L481 AbstractCegarLoop]: Abstraction has 27181 states and 33016 transitions. [2018-10-23 20:20:00,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:20:00,147 INFO L276 IsEmpty]: Start isEmpty. Operand 27181 states and 33016 transitions. [2018-10-23 20:20:00,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-23 20:20:00,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:00,151 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:20:00,152 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:00,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:00,152 INFO L82 PathProgramCache]: Analyzing trace with hash 230599966, now seen corresponding path program 1 times [2018-10-23 20:20:00,152 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:00,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:00,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:00,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:00,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-23 20:20:00,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:20:00,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:20:00,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:20:00,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:20:00,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:20:00,381 INFO L87 Difference]: Start difference. First operand 27181 states and 33016 transitions. Second operand 3 states. [2018-10-23 20:20:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:06,687 INFO L93 Difference]: Finished difference Result 76421 states and 92731 transitions. [2018-10-23 20:20:06,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:20:06,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2018-10-23 20:20:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:06,784 INFO L225 Difference]: With dead ends: 76421 [2018-10-23 20:20:06,784 INFO L226 Difference]: Without dead ends: 50030 [2018-10-23 20:20:06,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:20:06,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50030 states. [2018-10-23 20:20:07,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50030 to 50029. [2018-10-23 20:20:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50029 states. [2018-10-23 20:20:07,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50029 states to 50029 states and 57647 transitions. [2018-10-23 20:20:07,391 INFO L78 Accepts]: Start accepts. Automaton has 50029 states and 57647 transitions. Word has length 222 [2018-10-23 20:20:07,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:07,391 INFO L481 AbstractCegarLoop]: Abstraction has 50029 states and 57647 transitions. [2018-10-23 20:20:07,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:20:07,392 INFO L276 IsEmpty]: Start isEmpty. Operand 50029 states and 57647 transitions. [2018-10-23 20:20:07,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-23 20:20:07,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:07,401 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:20:07,402 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:07,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:07,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1465928611, now seen corresponding path program 1 times [2018-10-23 20:20:07,402 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:07,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:07,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:07,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:07,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:08,013 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-23 20:20:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 244 proven. 4 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-10-23 20:20:08,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:20:08,474 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:20:08,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:08,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:20:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-23 20:20:08,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:20:08,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:20:08,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:20:08,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:20:08,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:20:08,823 INFO L87 Difference]: Start difference. First operand 50029 states and 57647 transitions. Second operand 4 states. [2018-10-23 20:20:17,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:17,909 INFO L93 Difference]: Finished difference Result 117430 states and 133602 transitions. [2018-10-23 20:20:17,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:20:17,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2018-10-23 20:20:17,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:17,982 INFO L225 Difference]: With dead ends: 117430 [2018-10-23 20:20:17,982 INFO L226 Difference]: Without dead ends: 60263 [2018-10-23 20:20:18,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:20:18,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60263 states. [2018-10-23 20:20:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60263 to 52364. [2018-10-23 20:20:18,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52364 states. [2018-10-23 20:20:18,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52364 states to 52364 states and 59571 transitions. [2018-10-23 20:20:18,684 INFO L78 Accepts]: Start accepts. Automaton has 52364 states and 59571 transitions. Word has length 339 [2018-10-23 20:20:18,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:18,685 INFO L481 AbstractCegarLoop]: Abstraction has 52364 states and 59571 transitions. [2018-10-23 20:20:18,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:20:18,685 INFO L276 IsEmpty]: Start isEmpty. Operand 52364 states and 59571 transitions. [2018-10-23 20:20:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-23 20:20:18,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:18,700 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:20:18,700 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:18,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:18,700 INFO L82 PathProgramCache]: Analyzing trace with hash 308408486, now seen corresponding path program 1 times [2018-10-23 20:20:18,701 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:18,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:18,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:18,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:18,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-23 20:20:19,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:20:19,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:20:19,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:20:19,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:20:19,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:20:19,408 INFO L87 Difference]: Start difference. First operand 52364 states and 59571 transitions. Second operand 4 states. [2018-10-23 20:20:29,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:29,457 INFO L93 Difference]: Finished difference Result 111031 states and 125833 transitions. [2018-10-23 20:20:29,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:20:29,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 368 [2018-10-23 20:20:29,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:29,521 INFO L225 Difference]: With dead ends: 111031 [2018-10-23 20:20:29,522 INFO L226 Difference]: Without dead ends: 56268 [2018-10-23 20:20:29,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:20:29,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56268 states. [2018-10-23 20:20:30,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56268 to 51538. [2018-10-23 20:20:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51538 states. [2018-10-23 20:20:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51538 states to 51538 states and 57838 transitions. [2018-10-23 20:20:30,089 INFO L78 Accepts]: Start accepts. Automaton has 51538 states and 57838 transitions. Word has length 368 [2018-10-23 20:20:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:30,089 INFO L481 AbstractCegarLoop]: Abstraction has 51538 states and 57838 transitions. [2018-10-23 20:20:30,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:20:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 51538 states and 57838 transitions. [2018-10-23 20:20:30,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-10-23 20:20:30,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:30,099 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:20:30,100 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:30,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:30,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1225749556, now seen corresponding path program 1 times [2018-10-23 20:20:30,100 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:30,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:30,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:30,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:30,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-23 20:20:31,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:20:31,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:20:31,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:20:31,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:20:31,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:20:31,018 INFO L87 Difference]: Start difference. First operand 51538 states and 57838 transitions. Second operand 4 states. [2018-10-23 20:20:41,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:41,558 INFO L93 Difference]: Finished difference Result 132256 states and 149056 transitions. [2018-10-23 20:20:41,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:20:41,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 388 [2018-10-23 20:20:41,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:41,646 INFO L225 Difference]: With dead ends: 132256 [2018-10-23 20:20:41,646 INFO L226 Difference]: Without dead ends: 80716 [2018-10-23 20:20:41,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:20:41,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80716 states. [2018-10-23 20:20:42,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80716 to 78327. [2018-10-23 20:20:42,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78327 states. [2018-10-23 20:20:42,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78327 states to 78327 states and 86438 transitions. [2018-10-23 20:20:42,351 INFO L78 Accepts]: Start accepts. Automaton has 78327 states and 86438 transitions. Word has length 388 [2018-10-23 20:20:42,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:42,351 INFO L481 AbstractCegarLoop]: Abstraction has 78327 states and 86438 transitions. [2018-10-23 20:20:42,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:20:42,351 INFO L276 IsEmpty]: Start isEmpty. Operand 78327 states and 86438 transitions. [2018-10-23 20:20:42,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-10-23 20:20:42,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:42,356 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:20:42,357 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:42,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:42,357 INFO L82 PathProgramCache]: Analyzing trace with hash -453176567, now seen corresponding path program 1 times [2018-10-23 20:20:42,357 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:42,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:42,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:42,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:42,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-10-23 20:20:42,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:20:42,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:20:42,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:20:42,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:20:42,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:20:42,686 INFO L87 Difference]: Start difference. First operand 78327 states and 86438 transitions. Second operand 5 states. [2018-10-23 20:20:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:59,623 INFO L93 Difference]: Finished difference Result 282187 states and 309957 transitions. [2018-10-23 20:20:59,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:20:59,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 403 [2018-10-23 20:20:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:59,861 INFO L225 Difference]: With dead ends: 282187 [2018-10-23 20:20:59,862 INFO L226 Difference]: Without dead ends: 204649 [2018-10-23 20:20:59,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:21:00,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204649 states. [2018-10-23 20:21:02,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204649 to 189510. [2018-10-23 20:21:02,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189510 states. [2018-10-23 20:21:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189510 states to 189510 states and 205659 transitions. [2018-10-23 20:21:02,265 INFO L78 Accepts]: Start accepts. Automaton has 189510 states and 205659 transitions. Word has length 403 [2018-10-23 20:21:02,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:02,266 INFO L481 AbstractCegarLoop]: Abstraction has 189510 states and 205659 transitions. [2018-10-23 20:21:02,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:21:02,266 INFO L276 IsEmpty]: Start isEmpty. Operand 189510 states and 205659 transitions. [2018-10-23 20:21:02,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2018-10-23 20:21:02,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:02,281 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:21:02,281 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:02,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:02,281 INFO L82 PathProgramCache]: Analyzing trace with hash -320703339, now seen corresponding path program 1 times [2018-10-23 20:21:02,281 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:02,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:02,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:02,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:02,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 787 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-10-23 20:21:02,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:02,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:21:02,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:21:02,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:21:02,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:02,697 INFO L87 Difference]: Start difference. First operand 189510 states and 205659 transitions. Second operand 4 states. [2018-10-23 20:21:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:15,359 INFO L93 Difference]: Finished difference Result 378268 states and 410462 transitions. [2018-10-23 20:21:15,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:21:15,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 493 [2018-10-23 20:21:15,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:15,587 INFO L225 Difference]: With dead ends: 378268 [2018-10-23 20:21:15,587 INFO L226 Difference]: Without dead ends: 187967 [2018-10-23 20:21:15,679 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 [2018-10-23 20:21:15,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187967 states. [2018-10-23 20:21:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187967 to 183986. [2018-10-23 20:21:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183986 states. [2018-10-23 20:21:17,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183986 states to 183986 states and 195333 transitions. [2018-10-23 20:21:17,321 INFO L78 Accepts]: Start accepts. Automaton has 183986 states and 195333 transitions. Word has length 493 [2018-10-23 20:21:17,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:17,322 INFO L481 AbstractCegarLoop]: Abstraction has 183986 states and 195333 transitions. [2018-10-23 20:21:17,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:21:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 183986 states and 195333 transitions. [2018-10-23 20:21:17,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-10-23 20:21:17,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:17,332 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:21:17,332 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:17,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:17,333 INFO L82 PathProgramCache]: Analyzing trace with hash 612784664, now seen corresponding path program 1 times [2018-10-23 20:21:17,333 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:17,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:17,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:17,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:17,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 656 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2018-10-23 20:21:17,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:17,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:21:17,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:21:17,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:21:17,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:17,726 INFO L87 Difference]: Start difference. First operand 183986 states and 195333 transitions. Second operand 4 states. [2018-10-23 20:21:34,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:34,596 INFO L93 Difference]: Finished difference Result 409088 states and 434629 transitions. [2018-10-23 20:21:34,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:21:34,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 504 [2018-10-23 20:21:34,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:34,843 INFO L225 Difference]: With dead ends: 409088 [2018-10-23 20:21:34,843 INFO L226 Difference]: Without dead ends: 225892 [2018-10-23 20:21:34,930 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 [2018-10-23 20:21:35,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225892 states. [2018-10-23 20:21:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225892 to 222614. [2018-10-23 20:21:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222614 states. [2018-10-23 20:21:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222614 states to 222614 states and 236052 transitions. [2018-10-23 20:21:37,666 INFO L78 Accepts]: Start accepts. Automaton has 222614 states and 236052 transitions. Word has length 504 [2018-10-23 20:21:37,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:37,666 INFO L481 AbstractCegarLoop]: Abstraction has 222614 states and 236052 transitions. [2018-10-23 20:21:37,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:21:37,666 INFO L276 IsEmpty]: Start isEmpty. Operand 222614 states and 236052 transitions. [2018-10-23 20:21:37,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-10-23 20:21:37,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:37,673 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2018-10-23 20:21:37,673 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:37,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:37,673 INFO L82 PathProgramCache]: Analyzing trace with hash -675463201, now seen corresponding path program 1 times [2018-10-23 20:21:37,673 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:37,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:37,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:37,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:37,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 711 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2018-10-23 20:21:39,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:39,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:21:39,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:21:39,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:21:39,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:39,616 INFO L87 Difference]: Start difference. First operand 222614 states and 236052 transitions. Second operand 4 states. [2018-10-23 20:21:50,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:50,421 INFO L93 Difference]: Finished difference Result 435723 states and 462324 transitions. [2018-10-23 20:21:50,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:21:50,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 523 [2018-10-23 20:21:50,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:50,679 INFO L225 Difference]: With dead ends: 435723 [2018-10-23 20:21:50,679 INFO L226 Difference]: Without dead ends: 213899 [2018-10-23 20:21:50,750 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213899 states. [2018-10-23 20:21:58,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213899 to 210746. [2018-10-23 20:21:58,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210746 states. [2018-10-23 20:21:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210746 states to 210746 states and 219582 transitions. [2018-10-23 20:21:58,966 INFO L78 Accepts]: Start accepts. Automaton has 210746 states and 219582 transitions. Word has length 523 [2018-10-23 20:21:58,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:58,967 INFO L481 AbstractCegarLoop]: Abstraction has 210746 states and 219582 transitions. [2018-10-23 20:21:58,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:21:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 210746 states and 219582 transitions. [2018-10-23 20:21:58,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2018-10-23 20:21:58,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:58,972 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:21:58,972 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:58,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:58,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1848344313, now seen corresponding path program 1 times [2018-10-23 20:21:58,973 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:58,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:58,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:58,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:58,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2018-10-23 20:21:59,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:59,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:21:59,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:21:59,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:21:59,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:21:59,960 INFO L87 Difference]: Start difference. First operand 210746 states and 219582 transitions. Second operand 3 states. [2018-10-23 20:22:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:06,587 INFO L93 Difference]: Finished difference Result 419902 states and 437509 transitions. [2018-10-23 20:22:06,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:22:06,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 529 [2018-10-23 20:22:06,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:06,871 INFO L225 Difference]: With dead ends: 419902 [2018-10-23 20:22:06,871 INFO L226 Difference]: Without dead ends: 209944 [2018-10-23 20:22:06,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:22:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209944 states. [2018-10-23 20:22:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209944 to 209944. [2018-10-23 20:22:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209944 states. [2018-10-23 20:22:09,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209944 states to 209944 states and 218704 transitions. [2018-10-23 20:22:09,546 INFO L78 Accepts]: Start accepts. Automaton has 209944 states and 218704 transitions. Word has length 529 [2018-10-23 20:22:09,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:09,547 INFO L481 AbstractCegarLoop]: Abstraction has 209944 states and 218704 transitions. [2018-10-23 20:22:09,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:22:09,547 INFO L276 IsEmpty]: Start isEmpty. Operand 209944 states and 218704 transitions. [2018-10-23 20:22:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-10-23 20:22:09,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:09,556 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2018-10-23 20:22:09,556 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:09,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:09,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1672619671, now seen corresponding path program 1 times [2018-10-23 20:22:09,557 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:09,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:09,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:09,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:09,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:10,100 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 20:22:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-23 20:22:10,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:22:10,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:22:10,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:22:10,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:22:10,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:10,839 INFO L87 Difference]: Start difference. First operand 209944 states and 218704 transitions. Second operand 4 states. Received shutdown request... [2018-10-23 20:22:13,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:13,246 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:22:13,252 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:22:13,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:22:13 BoogieIcfgContainer [2018-10-23 20:22:13,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:22:13,254 INFO L168 Benchmark]: Toolchain (without parser) took 226401.41 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-23 20:22:13,255 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. [2018-10-23 20:22:13,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2499.37 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:22:13,256 INFO L168 Benchmark]: Boogie Procedure Inliner took 874.13 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2018-10-23 20:22:13,257 INFO L168 Benchmark]: Boogie Preprocessor took 513.03 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: 80.8 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:22:13,258 INFO L168 Benchmark]: RCFGBuilder took 17146.99 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 245.4 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 587.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:22:13,259 INFO L168 Benchmark]: TraceAbstraction took 205362.85 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -428.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-23 20:22:13,264 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 2499.37 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 874.13 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 513.03 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: 80.8 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17146.99 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 245.4 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 587.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205362.85 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -428.9 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: 147]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 147). Cancelled while BasicCegarLoop was constructing difference of abstraction (209944states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (5436 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 205.2s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 172.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9049 SDtfs, 32413 SDslu, 3273 SDs, 0 SdLazy, 64161 SolverSat, 16367 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 138.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 782 GetRequests, 739 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222614occurred 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: 20.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 49368 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 5566 NumberOfCodeBlocks, 5566 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 5549 ConstructedInterpolants, 0 QuantifiedInterpolants, 4808078 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1004 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 7787/7861 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown