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/Problem12_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:15:15,749 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:15:15,751 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:15:15,763 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:15:15,763 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:15:15,764 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:15:15,766 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:15:15,768 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:15:15,770 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:15:15,770 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:15:15,771 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:15:15,772 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:15:15,773 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:15:15,774 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:15:15,775 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:15:15,776 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:15:15,777 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:15:15,779 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:15:15,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:15:15,782 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:15:15,784 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:15:15,785 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:15:15,788 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 21:15:15,797 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 21:15:15,812 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:15:15,813 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:15:15,814 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:15:15,814 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:15:15,815 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:15:15,815 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:15:15,815 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:15:15,815 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:15:15,815 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:15:15,816 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:15:15,816 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:15:15,816 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:15:15,816 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:15:15,816 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:15:15,817 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:15:15,817 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:15:15,817 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:15:15,817 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:15:15,817 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:15:15,818 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:15:15,818 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:15:15,818 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:15:15,818 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:15:15,818 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:15:15,818 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:15:15,819 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:15:15,819 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:15:15,819 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:15:15,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:15:15,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:15:15,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:15:15,881 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:15:15,882 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:15:15,883 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c [2018-10-26 21:15:15,939 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cb59285af/13d9d4828b494e86a9fe2a4ca8be5270/FLAGb2bb856f3 [2018-10-26 21:15:16,818 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:15:16,819 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c [2018-10-26 21:15:16,859 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cb59285af/13d9d4828b494e86a9fe2a4ca8be5270/FLAGb2bb856f3 [2018-10-26 21:15:16,882 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cb59285af/13d9d4828b494e86a9fe2a4ca8be5270 [2018-10-26 21:15:16,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:15:16,896 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:15:16,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:15:16,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:15:16,904 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:15:16,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:15:16" (1/1) ... [2018-10-26 21:15:16,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e7d78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:15:16, skipping insertion in model container [2018-10-26 21:15:16,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:15:16" (1/1) ... [2018-10-26 21:15:16,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:15:17,099 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:15:18,381 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:15:18,386 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:15:18,991 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:15:19,025 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:15:19,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:15:19 WrapperNode [2018-10-26 21:15:19,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:15:19,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:15:19,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:15:19,031 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:15:19,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:15:19" (1/1) ... [2018-10-26 21:15:19,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:15:19" (1/1) ... [2018-10-26 21:15:19,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:15:19,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:15:19,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:15:19,706 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:15:19,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:15:19" (1/1) ... [2018-10-26 21:15:19,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:15:19" (1/1) ... [2018-10-26 21:15:19,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:15:19" (1/1) ... [2018-10-26 21:15:19,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:15:19" (1/1) ... [2018-10-26 21:15:19,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:15:19" (1/1) ... [2018-10-26 21:15:19,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:15:19" (1/1) ... [2018-10-26 21:15:20,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:15:19" (1/1) ... [2018-10-26 21:15:20,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:15:20,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:15:20,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:15:20,130 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:15:20,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:15:19" (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 21:15:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:15:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:15:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:15:28,768 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:15:28,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:15:28 BoogieIcfgContainer [2018-10-26 21:15:28,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:15:28,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:15:28,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:15:28,773 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:15:28,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:15:16" (1/3) ... [2018-10-26 21:15:28,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460b3b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:15:28, skipping insertion in model container [2018-10-26 21:15:28,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:15:19" (2/3) ... [2018-10-26 21:15:28,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460b3b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:15:28, skipping insertion in model container [2018-10-26 21:15:28,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:15:28" (3/3) ... [2018-10-26 21:15:28,777 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label12_true-unreach-call.c [2018-10-26 21:15:28,788 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:15:28,804 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:15:28,822 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:15:28,880 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:15:28,880 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:15:28,881 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:15:28,881 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:15:28,881 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:15:28,881 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:15:28,881 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:15:28,881 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:15:28,882 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:15:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-26 21:15:28,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-26 21:15:28,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:15:28,942 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:15:28,945 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:15:28,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:15:28,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1281577798, now seen corresponding path program 1 times [2018-10-26 21:15:28,953 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:15:28,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:15:28,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:15:28,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:15:28,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:15:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:15:29,397 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 21:15:29,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:15:29,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:15:29,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:15:29,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:15:29,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:15:29,427 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-26 21:15:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:15:48,825 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-26 21:15:48,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:15:48,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-10-26 21:15:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:15:48,870 INFO L225 Difference]: With dead ends: 3146 [2018-10-26 21:15:48,870 INFO L226 Difference]: Without dead ends: 2320 [2018-10-26 21:15:48,879 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 21:15:48,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-26 21:15:49,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-26 21:15:49,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-26 21:15:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-10-26 21:15:49,052 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 59 [2018-10-26 21:15:49,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:15:49,055 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-10-26 21:15:49,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:15:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-10-26 21:15:49,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-26 21:15:49,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:15:49,062 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:15:49,062 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:15:49,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:15:49,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1104251190, now seen corresponding path program 1 times [2018-10-26 21:15:49,063 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:15:49,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:15:49,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:15:49,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:15:49,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:15:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:15:49,739 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2018-10-26 21:15:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 51 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:15:49,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:15:49,819 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 21:15:49,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:15:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:15:49,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:15:50,014 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:15:50,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:15:50,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 21:15:50,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:15:50,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:15:50,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:15:50,046 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 7 states. [2018-10-26 21:16:23,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:16:23,834 INFO L93 Difference]: Finished difference Result 22720 states and 38802 transitions. [2018-10-26 21:16:23,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 21:16:23,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2018-10-26 21:16:23,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:16:23,917 INFO L225 Difference]: With dead ends: 22720 [2018-10-26 21:16:23,917 INFO L226 Difference]: Without dead ends: 18143 [2018-10-26 21:16:23,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2018-10-26 21:16:23,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2018-10-26 21:16:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 9087. [2018-10-26 21:16:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9087 states. [2018-10-26 21:16:24,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9087 states to 9087 states and 11085 transitions. [2018-10-26 21:16:24,163 INFO L78 Accepts]: Start accepts. Automaton has 9087 states and 11085 transitions. Word has length 131 [2018-10-26 21:16:24,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:16:24,164 INFO L481 AbstractCegarLoop]: Abstraction has 9087 states and 11085 transitions. [2018-10-26 21:16:24,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:16:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 9087 states and 11085 transitions. [2018-10-26 21:16:24,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-26 21:16:24,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:16:24,172 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 21:16:24,173 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:16:24,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:16:24,173 INFO L82 PathProgramCache]: Analyzing trace with hash -737947407, now seen corresponding path program 1 times [2018-10-26 21:16:24,173 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:16:24,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:16:24,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:16:24,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:16:24,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:16:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:16:24,869 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2018-10-26 21:16:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-10-26 21:16:25,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:16:25,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:16:25,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:16:25,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:16:25,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:16:25,026 INFO L87 Difference]: Start difference. First operand 9087 states and 11085 transitions. Second operand 6 states. [2018-10-26 21:16:36,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:16:36,875 INFO L93 Difference]: Finished difference Result 22685 states and 27974 transitions. [2018-10-26 21:16:36,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:16:36,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 274 [2018-10-26 21:16:36,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:16:36,919 INFO L225 Difference]: With dead ends: 22685 [2018-10-26 21:16:36,919 INFO L226 Difference]: Without dead ends: 12095 [2018-10-26 21:16:36,935 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:16:36,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12095 states. [2018-10-26 21:16:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12095 to 12095. [2018-10-26 21:16:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12095 states. [2018-10-26 21:16:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12095 states to 12095 states and 14681 transitions. [2018-10-26 21:16:37,135 INFO L78 Accepts]: Start accepts. Automaton has 12095 states and 14681 transitions. Word has length 274 [2018-10-26 21:16:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:16:37,136 INFO L481 AbstractCegarLoop]: Abstraction has 12095 states and 14681 transitions. [2018-10-26 21:16:37,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:16:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 12095 states and 14681 transitions. [2018-10-26 21:16:37,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-26 21:16:37,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:16:37,142 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 21:16:37,143 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:16:37,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:16:37,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1911810078, now seen corresponding path program 1 times [2018-10-26 21:16:37,143 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:16:37,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:16:37,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:16:37,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:16:37,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:16:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:16:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 113 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-26 21:16:37,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:16:37,565 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 21:16:37,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:16:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:16:37,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:16:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:16:38,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:16:38,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 21:16:38,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:16:38,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:16:38,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:16:38,104 INFO L87 Difference]: Start difference. First operand 12095 states and 14681 transitions. Second operand 4 states. [2018-10-26 21:16:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:16:48,503 INFO L93 Difference]: Finished difference Result 42296 states and 52431 transitions. [2018-10-26 21:16:48,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:16:48,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 283 [2018-10-26 21:16:48,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:16:48,555 INFO L225 Difference]: With dead ends: 42296 [2018-10-26 21:16:48,556 INFO L226 Difference]: Without dead ends: 30203 [2018-10-26 21:16:48,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 283 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 21:16:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30203 states. [2018-10-26 21:16:48,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30203 to 18863. [2018-10-26 21:16:48,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18863 states. [2018-10-26 21:16:48,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18863 states to 18863 states and 22730 transitions. [2018-10-26 21:16:48,892 INFO L78 Accepts]: Start accepts. Automaton has 18863 states and 22730 transitions. Word has length 283 [2018-10-26 21:16:48,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:16:48,892 INFO L481 AbstractCegarLoop]: Abstraction has 18863 states and 22730 transitions. [2018-10-26 21:16:48,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:16:48,893 INFO L276 IsEmpty]: Start isEmpty. Operand 18863 states and 22730 transitions. [2018-10-26 21:16:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-10-26 21:16:48,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:16:48,902 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:48,902 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:16:48,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:16:48,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2082331721, now seen corresponding path program 1 times [2018-10-26 21:16:48,903 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:16:48,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:16:48,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:16:48,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:16:48,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:16:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:16:49,340 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-10-26 21:16:49,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:16:49,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:16:49,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:16:49,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:16:49,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:16:49,342 INFO L87 Difference]: Start difference. First operand 18863 states and 22730 transitions. Second operand 4 states. [2018-10-26 21:16:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:16:58,474 INFO L93 Difference]: Finished difference Result 71564 states and 86965 transitions. [2018-10-26 21:16:58,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:16:58,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 357 [2018-10-26 21:16:58,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:16:58,545 INFO L225 Difference]: With dead ends: 71564 [2018-10-26 21:16:58,546 INFO L226 Difference]: Without dead ends: 52703 [2018-10-26 21:16:58,576 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 21:16:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52703 states. [2018-10-26 21:16:59,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52703 to 52703. [2018-10-26 21:16:59,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52703 states. [2018-10-26 21:16:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52703 states to 52703 states and 62446 transitions. [2018-10-26 21:16:59,214 INFO L78 Accepts]: Start accepts. Automaton has 52703 states and 62446 transitions. Word has length 357 [2018-10-26 21:16:59,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:16:59,215 INFO L481 AbstractCegarLoop]: Abstraction has 52703 states and 62446 transitions. [2018-10-26 21:16:59,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:16:59,215 INFO L276 IsEmpty]: Start isEmpty. Operand 52703 states and 62446 transitions. [2018-10-26 21:16:59,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-10-26 21:16:59,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:16:59,231 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:59,232 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:16:59,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:16:59,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1518724673, now seen corresponding path program 1 times [2018-10-26 21:16:59,232 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:16:59,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:16:59,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:16:59,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:16:59,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:16:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:16:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-26 21:16:59,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:16:59,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:16:59,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:16:59,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:16:59,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:16:59,530 INFO L87 Difference]: Start difference. First operand 52703 states and 62446 transitions. Second operand 3 states. [2018-10-26 21:17:04,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:17:04,969 INFO L93 Difference]: Finished difference Result 118188 states and 139932 transitions. [2018-10-26 21:17:04,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:17:04,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 361 [2018-10-26 21:17:04,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:17:05,040 INFO L225 Difference]: With dead ends: 118188 [2018-10-26 21:17:05,040 INFO L226 Difference]: Without dead ends: 65487 [2018-10-26 21:17:05,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 21:17:05,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65487 states. [2018-10-26 21:17:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65487 to 63231. [2018-10-26 21:17:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63231 states. [2018-10-26 21:17:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63231 states to 63231 states and 72251 transitions. [2018-10-26 21:17:05,730 INFO L78 Accepts]: Start accepts. Automaton has 63231 states and 72251 transitions. Word has length 361 [2018-10-26 21:17:05,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:17:05,730 INFO L481 AbstractCegarLoop]: Abstraction has 63231 states and 72251 transitions. [2018-10-26 21:17:05,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:17:05,730 INFO L276 IsEmpty]: Start isEmpty. Operand 63231 states and 72251 transitions. [2018-10-26 21:17:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-10-26 21:17:05,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:17:05,750 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:05,750 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:17:05,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:17:05,750 INFO L82 PathProgramCache]: Analyzing trace with hash -632950127, now seen corresponding path program 1 times [2018-10-26 21:17:05,751 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:17:05,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:17:05,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:17:05,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:17:05,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:17:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:17:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-26 21:17:06,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:17:06,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:17:06,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:17:06,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:17:06,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:17:06,257 INFO L87 Difference]: Start difference. First operand 63231 states and 72251 transitions. Second operand 5 states. [2018-10-26 21:17:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:17:19,259 INFO L93 Difference]: Finished difference Result 187414 states and 213833 transitions. [2018-10-26 21:17:19,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:17:19,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 393 [2018-10-26 21:17:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:17:19,384 INFO L225 Difference]: With dead ends: 187414 [2018-10-26 21:17:19,384 INFO L226 Difference]: Without dead ends: 124185 [2018-10-26 21:17:19,426 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 [2018-10-26 21:17:19,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124185 states. [2018-10-26 21:17:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124185 to 100873. [2018-10-26 21:17:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100873 states. [2018-10-26 21:17:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100873 states to 100873 states and 110856 transitions. [2018-10-26 21:17:20,542 INFO L78 Accepts]: Start accepts. Automaton has 100873 states and 110856 transitions. Word has length 393 [2018-10-26 21:17:20,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:17:20,543 INFO L481 AbstractCegarLoop]: Abstraction has 100873 states and 110856 transitions. [2018-10-26 21:17:20,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:17:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 100873 states and 110856 transitions. [2018-10-26 21:17:20,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2018-10-26 21:17:20,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:17:20,632 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:17:20,632 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:17:20,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:17:20,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2084166946, now seen corresponding path program 1 times [2018-10-26 21:17:20,633 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:17:20,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:17:20,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:17:20,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:17:20,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:17:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:17:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-26 21:17:22,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:17:22,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:17:22,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:17:22,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:17:22,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:17:22,174 INFO L87 Difference]: Start difference. First operand 100873 states and 110856 transitions. Second operand 4 states. [2018-10-26 21:17:29,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:17:29,705 INFO L93 Difference]: Finished difference Result 248365 states and 273908 transitions. [2018-10-26 21:17:29,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:17:29,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 744 [2018-10-26 21:17:29,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:17:29,904 INFO L225 Difference]: With dead ends: 248365 [2018-10-26 21:17:29,904 INFO L226 Difference]: Without dead ends: 133181 [2018-10-26 21:17:29,998 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 [2018-10-26 21:17:30,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133181 states. [2018-10-26 21:17:31,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133181 to 118893. [2018-10-26 21:17:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118893 states. [2018-10-26 21:17:32,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118893 states to 118893 states and 129063 transitions. [2018-10-26 21:17:32,284 INFO L78 Accepts]: Start accepts. Automaton has 118893 states and 129063 transitions. Word has length 744 [2018-10-26 21:17:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:17:32,285 INFO L481 AbstractCegarLoop]: Abstraction has 118893 states and 129063 transitions. [2018-10-26 21:17:32,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:17:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 118893 states and 129063 transitions. [2018-10-26 21:17:32,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2018-10-26 21:17:32,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:17:32,326 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:17:32,327 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:17:32,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:17:32,328 INFO L82 PathProgramCache]: Analyzing trace with hash 134317932, now seen corresponding path program 1 times [2018-10-26 21:17:32,328 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:17:32,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:17:32,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:17:32,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:17:32,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:17:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:17:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-10-26 21:17:32,904 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:17:32,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:17:32,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:17:32,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:17:32,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:17:32,905 INFO L87 Difference]: Start difference. First operand 118893 states and 129063 transitions. Second operand 4 states. [2018-10-26 21:17:41,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:17:41,569 INFO L93 Difference]: Finished difference Result 258088 states and 281063 transitions. [2018-10-26 21:17:41,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:17:41,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 773 [2018-10-26 21:17:41,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:17:41,733 INFO L225 Difference]: With dead ends: 258088 [2018-10-26 21:17:41,734 INFO L226 Difference]: Without dead ends: 139949 [2018-10-26 21:17:41,784 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 21:17:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139949 states. [2018-10-26 21:17:42,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139949 to 134685. [2018-10-26 21:17:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134685 states. [2018-10-26 21:17:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134685 states to 134685 states and 144486 transitions. [2018-10-26 21:17:43,031 INFO L78 Accepts]: Start accepts. Automaton has 134685 states and 144486 transitions. Word has length 773 [2018-10-26 21:17:43,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:17:43,032 INFO L481 AbstractCegarLoop]: Abstraction has 134685 states and 144486 transitions. [2018-10-26 21:17:43,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:17:43,032 INFO L276 IsEmpty]: Start isEmpty. Operand 134685 states and 144486 transitions. [2018-10-26 21:17:43,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2018-10-26 21:17:43,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:17:43,082 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:43,083 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:17:43,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:17:43,083 INFO L82 PathProgramCache]: Analyzing trace with hash 885046507, now seen corresponding path program 1 times [2018-10-26 21:17:43,084 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:17:43,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:17:43,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:17:43,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:17:43,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:17:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:17:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-26 21:17:43,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:17:43,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:17:43,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:17:43,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:17:43,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:17:43,939 INFO L87 Difference]: Start difference. First operand 134685 states and 144486 transitions. Second operand 4 states. [2018-10-26 21:17:54,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:17:54,312 INFO L93 Difference]: Finished difference Result 292680 states and 313401 transitions. [2018-10-26 21:17:54,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:17:54,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 823 [2018-10-26 21:17:54,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:17:54,557 INFO L225 Difference]: With dead ends: 292680 [2018-10-26 21:17:54,558 INFO L226 Difference]: Without dead ends: 157243 [2018-10-26 21:17:54,664 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 [2018-10-26 21:17:54,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157243 states. [2018-10-26 21:17:56,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157243 to 149723. [2018-10-26 21:17:56,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149723 states. [2018-10-26 21:17:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149723 states to 149723 states and 159071 transitions. [2018-10-26 21:17:57,115 INFO L78 Accepts]: Start accepts. Automaton has 149723 states and 159071 transitions. Word has length 823 [2018-10-26 21:17:57,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:17:57,117 INFO L481 AbstractCegarLoop]: Abstraction has 149723 states and 159071 transitions. [2018-10-26 21:17:57,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:17:57,117 INFO L276 IsEmpty]: Start isEmpty. Operand 149723 states and 159071 transitions. [2018-10-26 21:17:57,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2018-10-26 21:17:57,168 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:17:57,169 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:17:57,169 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:17:57,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:17:57,170 INFO L82 PathProgramCache]: Analyzing trace with hash 904075422, now seen corresponding path program 1 times [2018-10-26 21:17:57,170 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:17:57,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:17:57,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:17:57,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:17:57,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:17:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:17:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 607 proven. 57 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-26 21:17:58,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:17:58,046 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 [2018-10-26 21:17:58,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:17:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:17:58,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:17:58,704 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 25 [2018-10-26 21:18:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 628 proven. 36 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-26 21:18:01,754 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:18:01,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-26 21:18:01,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:18:01,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:18:01,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:18:01,757 INFO L87 Difference]: Start difference. First operand 149723 states and 159071 transitions. Second operand 8 states. [2018-10-26 21:18:45,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:18:45,962 INFO L93 Difference]: Finished difference Result 362609 states and 386578 transitions. [2018-10-26 21:18:45,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-26 21:18:45,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 848 [2018-10-26 21:18:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:18:45,964 INFO L225 Difference]: With dead ends: 362609 [2018-10-26 21:18:45,964 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 21:18:46,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-10-26 21:18:46,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 21:18:46,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 21:18:46,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 21:18:46,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 21:18:46,039 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 848 [2018-10-26 21:18:46,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:18:46,039 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 21:18:46,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:18:46,039 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 21:18:46,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 21:18:46,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 21:18:46,171 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:46,505 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:46,571 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:46,753 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:47,132 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:47,341 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:47,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:47,450 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:47,543 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:47,805 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:47,849 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:47,878 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:47,965 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:48,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:48,152 WARN L179 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 634 DAG size of output: 472 [2018-10-26 21:18:48,238 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:48,477 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:48,517 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:48,637 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:48,936 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:49,092 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:49,124 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:49,154 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:49,408 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:49,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:49,572 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:49,587 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:49,628 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:49,659 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:49,746 WARN L179 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 634 DAG size of output: 472 [2018-10-26 21:18:49,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:49,999 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:50,034 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:50,129 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:50,364 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:50,495 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:50,521 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:50,548 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:50,596 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:50,721 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:50,744 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:50,763 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:50,804 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:50,834 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:50,914 WARN L179 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 634 DAG size of output: 472 [2018-10-26 21:18:50,989 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:51,156 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:51,184 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:51,275 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:51,500 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:51,696 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:51,721 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:51,746 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:51,792 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:51,913 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:51,934 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:51,948 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:51,984 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:52,011 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:52,087 WARN L179 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 634 DAG size of output: 472 [2018-10-26 21:18:52,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:52,376 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:52,402 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:52,492 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:52,726 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:52,942 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:52,988 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:53,033 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:53,114 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:53,264 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:53,290 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:53,311 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:53,347 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:53,379 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 21:18:53,461 WARN L179 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 634 DAG size of output: 472 [2018-10-26 21:18:57,516 WARN L179 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 456 DAG size of output: 85 [2018-10-26 21:19:01,674 WARN L179 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 456 DAG size of output: 85 [2018-10-26 21:19:05,798 WARN L179 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 456 DAG size of output: 85 Received shutdown request... [2018-10-26 21:19:08,566 WARN L187 SmtUtils]: Removed 59 from assertion stack [2018-10-26 21:19:08,566 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-26 21:19:08,568 INFO L168 Benchmark]: Toolchain (without parser) took 231672.96 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-26 21:19:08,570 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 21:19:08,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2127.37 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-10-26 21:19:08,571 INFO L168 Benchmark]: Boogie Procedure Inliner took 677.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -986.5 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-26 21:19:08,572 INFO L168 Benchmark]: Boogie Preprocessor took 423.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-10-26 21:19:08,573 INFO L168 Benchmark]: RCFGBuilder took 8639.82 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 224.9 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -184.8 MB). Peak memory consumption was 624.0 MB. Max. memory is 7.1 GB. [2018-10-26 21:19:08,574 INFO L168 Benchmark]: TraceAbstraction took 219797.13 ms. Allocated memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: 1.8 GB). Free memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: -618.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-26 21:19:08,580 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2127.37 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 677.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -986.5 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 423.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8639.82 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 224.9 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -184.8 MB). Peak memory consumption was 624.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219797.13 ms. Allocated memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: 1.8 GB). Free memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: -618.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 186]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 456. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown