java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label42_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:07:22,901 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:07:22,903 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:07:22,915 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:07:22,915 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:07:22,916 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:07:22,918 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:07:22,920 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:07:22,921 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:07:22,922 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:07:22,923 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:07:22,923 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:07:22,924 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:07:22,925 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:07:22,927 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:07:22,928 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:07:22,929 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:07:22,930 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:07:22,933 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:07:22,934 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:07:22,935 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:07:22,937 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:07:22,939 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:07:22,940 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:07:22,942 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:07:22,943 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:07:22,944 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:07:22,948 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:07:22,949 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:07:22,950 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:07:22,950 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:07:22,953 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 19:07:22,957 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:07:22,986 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:07:22,986 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:07:22,987 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:07:22,987 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:07:22,988 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:07:22,988 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:07:22,988 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:07:22,991 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:07:22,991 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:07:22,991 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:07:22,991 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:07:22,991 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:07:22,992 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:07:22,992 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:07:22,992 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:07:22,992 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:07:22,992 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:07:22,993 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:07:22,993 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:07:22,993 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:07:22,993 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:07:22,993 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:07:22,995 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:07:22,995 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:07:22,995 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:07:22,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:07:22,996 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:07:22,996 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:07:23,053 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:07:23,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:07:23,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:07:23,072 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:07:23,072 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:07:23,073 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label42_false-unreach-call.c [2018-11-06 19:07:23,131 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7354e73f4/1c4c5eba7318402a8c9b9626c06e850c/FLAG4360f14cd [2018-11-06 19:07:23,855 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:07:23,856 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label42_false-unreach-call.c [2018-11-06 19:07:23,886 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7354e73f4/1c4c5eba7318402a8c9b9626c06e850c/FLAG4360f14cd [2018-11-06 19:07:23,902 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7354e73f4/1c4c5eba7318402a8c9b9626c06e850c [2018-11-06 19:07:23,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:07:23,915 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:07:23,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:07:23,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:07:23,921 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:07:23,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:07:23" (1/1) ... [2018-11-06 19:07:23,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@513c6e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:23, skipping insertion in model container [2018-11-06 19:07:23,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:07:23" (1/1) ... [2018-11-06 19:07:23,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:07:24,114 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:07:25,534 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:07:25,539 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:07:26,130 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:07:26,166 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:07:26,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:26 WrapperNode [2018-11-06 19:07:26,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:07:26,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:07:26,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:07:26,168 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:07:26,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:26" (1/1) ... [2018-11-06 19:07:26,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:26" (1/1) ... [2018-11-06 19:07:26,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:07:26,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:07:26,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:07:26,776 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:07:26,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:26" (1/1) ... [2018-11-06 19:07:26,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:26" (1/1) ... [2018-11-06 19:07:26,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:26" (1/1) ... [2018-11-06 19:07:26,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:26" (1/1) ... [2018-11-06 19:07:26,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:26" (1/1) ... [2018-11-06 19:07:27,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:26" (1/1) ... [2018-11-06 19:07:27,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:26" (1/1) ... [2018-11-06 19:07:27,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:07:27,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:07:27,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:07:27,129 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:07:27,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:07:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:07:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:07:27,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:07:35,685 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:07:35,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:35 BoogieIcfgContainer [2018-11-06 19:07:35,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:07:35,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:07:35,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:07:35,690 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:07:35,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:07:23" (1/3) ... [2018-11-06 19:07:35,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c59177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:35, skipping insertion in model container [2018-11-06 19:07:35,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:26" (2/3) ... [2018-11-06 19:07:35,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c59177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:35, skipping insertion in model container [2018-11-06 19:07:35,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:35" (3/3) ... [2018-11-06 19:07:35,696 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label42_false-unreach-call.c [2018-11-06 19:07:35,707 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:07:35,716 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:07:35,734 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:07:35,778 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:07:35,779 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:07:35,779 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:07:35,779 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:07:35,780 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:07:35,780 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:07:35,780 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:07:35,780 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:07:35,780 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:07:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-11-06 19:07:35,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-06 19:07:35,822 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:07:35,823 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] [2018-11-06 19:07:35,826 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:07:35,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:07:35,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1740446778, now seen corresponding path program 1 times [2018-11-06 19:07:35,834 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:07:35,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:07:35,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:35,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:35,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:07:36,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:07:36,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:07:36,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:07:36,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:07:36,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:07:36,294 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-11-06 19:07:47,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:07:47,901 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-11-06 19:07:47,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:07:47,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-06 19:07:47,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:07:47,943 INFO L225 Difference]: With dead ends: 3146 [2018-11-06 19:07:47,944 INFO L226 Difference]: Without dead ends: 2320 [2018-11-06 19:07:47,952 INFO L604 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 [2018-11-06 19:07:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-11-06 19:07:48,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-11-06 19:07:48,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-11-06 19:07:48,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-11-06 19:07:48,108 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 27 [2018-11-06 19:07:48,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:07:48,108 INFO L480 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-11-06 19:07:48,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:07:48,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-11-06 19:07:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-06 19:07:48,113 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:07:48,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:07:48,114 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:07:48,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:07:48,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1432295350, now seen corresponding path program 1 times [2018-11-06 19:07:48,114 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:07:48,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:07:48,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:48,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:48,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:07:48,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:07:48,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:07:48,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:07:48,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:07:48,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:07:48,441 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 4 states. [2018-11-06 19:07:59,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:07:59,996 INFO L93 Difference]: Finished difference Result 9150 states and 15304 transitions. [2018-11-06 19:07:59,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:07:59,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-11-06 19:07:59,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:08:00,032 INFO L225 Difference]: With dead ends: 9150 [2018-11-06 19:08:00,032 INFO L226 Difference]: Without dead ends: 6832 [2018-11-06 19:08:00,037 INFO L604 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 [2018-11-06 19:08:00,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-11-06 19:08:00,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-11-06 19:08:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-11-06 19:08:00,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 10758 transitions. [2018-11-06 19:08:00,169 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 10758 transitions. Word has length 99 [2018-11-06 19:08:00,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:08:00,169 INFO L480 AbstractCegarLoop]: Abstraction has 6832 states and 10758 transitions. [2018-11-06 19:08:00,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:08:00,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 10758 transitions. [2018-11-06 19:08:00,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-06 19:08:00,178 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:08:00,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:08:00,178 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:08:00,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:08:00,179 INFO L82 PathProgramCache]: Analyzing trace with hash 2098293481, now seen corresponding path program 1 times [2018-11-06 19:08:00,179 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:08:00,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:08:00,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:00,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:00,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:00,564 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 19:08:00,832 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2018-11-06 19:08:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:01,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:08:01,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:08:01,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:08:01,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:08:01,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:08:01,115 INFO L87 Difference]: Start difference. First operand 6832 states and 10758 transitions. Second operand 6 states. [2018-11-06 19:08:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:08:13,669 INFO L93 Difference]: Finished difference Result 15918 states and 24429 transitions. [2018-11-06 19:08:13,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:08:13,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-11-06 19:08:13,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:08:13,711 INFO L225 Difference]: With dead ends: 15918 [2018-11-06 19:08:13,712 INFO L226 Difference]: Without dead ends: 9088 [2018-11-06 19:08:13,721 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:08:13,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9088 states. [2018-11-06 19:08:13,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9088 to 9088. [2018-11-06 19:08:13,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9088 states. [2018-11-06 19:08:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9088 states to 9088 states and 12919 transitions. [2018-11-06 19:08:13,882 INFO L78 Accepts]: Start accepts. Automaton has 9088 states and 12919 transitions. Word has length 137 [2018-11-06 19:08:13,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:08:13,883 INFO L480 AbstractCegarLoop]: Abstraction has 9088 states and 12919 transitions. [2018-11-06 19:08:13,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:08:13,883 INFO L276 IsEmpty]: Start isEmpty. Operand 9088 states and 12919 transitions. [2018-11-06 19:08:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-06 19:08:13,888 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:08:13,888 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:08:13,889 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:08:13,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:08:13,889 INFO L82 PathProgramCache]: Analyzing trace with hash 323623673, now seen corresponding path program 1 times [2018-11-06 19:08:13,889 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:08:13,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:08:13,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:13,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:13,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 115 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:14,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:08:14,481 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:08:14,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:14,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:08:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:14,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:08:14,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-11-06 19:08:14,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:08:14,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:08:14,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:08:14,851 INFO L87 Difference]: Start difference. First operand 9088 states and 12919 transitions. Second operand 6 states. [2018-11-06 19:08:32,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:08:32,544 INFO L93 Difference]: Finished difference Result 43022 states and 63364 transitions. [2018-11-06 19:08:32,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 19:08:32,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-11-06 19:08:32,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:08:32,627 INFO L225 Difference]: With dead ends: 43022 [2018-11-06 19:08:32,628 INFO L226 Difference]: Without dead ends: 32429 [2018-11-06 19:08:32,650 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 210 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:08:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32429 states. [2018-11-06 19:08:32,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32429 to 15855. [2018-11-06 19:08:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15855 states. [2018-11-06 19:08:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15855 states to 15855 states and 19326 transitions. [2018-11-06 19:08:33,023 INFO L78 Accepts]: Start accepts. Automaton has 15855 states and 19326 transitions. Word has length 209 [2018-11-06 19:08:33,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:08:33,023 INFO L480 AbstractCegarLoop]: Abstraction has 15855 states and 19326 transitions. [2018-11-06 19:08:33,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:08:33,024 INFO L276 IsEmpty]: Start isEmpty. Operand 15855 states and 19326 transitions. [2018-11-06 19:08:33,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-11-06 19:08:33,032 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:08:33,033 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:08:33,033 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:08:33,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:08:33,034 INFO L82 PathProgramCache]: Analyzing trace with hash -711363662, now seen corresponding path program 1 times [2018-11-06 19:08:33,034 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:08:33,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:08:33,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:33,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:33,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:33,703 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-11-06 19:08:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 50 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:34,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:08:34,124 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:08:34,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:34,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:08:34,410 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 91 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:34,432 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:08:34,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2018-11-06 19:08:34,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 19:08:34,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 19:08:34,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:08:34,434 INFO L87 Difference]: Start difference. First operand 15855 states and 19326 transitions. Second operand 8 states. [2018-11-06 19:08:51,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:08:51,834 INFO L93 Difference]: Finished difference Result 45996 states and 57716 transitions. [2018-11-06 19:08:51,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 19:08:51,835 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 283 [2018-11-06 19:08:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:08:51,888 INFO L225 Difference]: With dead ends: 45996 [2018-11-06 19:08:51,888 INFO L226 Difference]: Without dead ends: 29390 [2018-11-06 19:08:51,912 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2018-11-06 19:08:51,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29390 states. [2018-11-06 19:08:52,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29390 to 26382. [2018-11-06 19:08:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26382 states. [2018-11-06 19:08:52,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26382 states to 26382 states and 32561 transitions. [2018-11-06 19:08:52,273 INFO L78 Accepts]: Start accepts. Automaton has 26382 states and 32561 transitions. Word has length 283 [2018-11-06 19:08:52,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:08:52,273 INFO L480 AbstractCegarLoop]: Abstraction has 26382 states and 32561 transitions. [2018-11-06 19:08:52,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 19:08:52,274 INFO L276 IsEmpty]: Start isEmpty. Operand 26382 states and 32561 transitions. [2018-11-06 19:08:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-11-06 19:08:52,280 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:08:52,280 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:08:52,280 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:08:52,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:08:52,281 INFO L82 PathProgramCache]: Analyzing trace with hash -465517453, now seen corresponding path program 1 times [2018-11-06 19:08:52,281 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:08:52,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:08:52,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:52,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:52,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-11-06 19:08:52,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:08:52,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:08:52,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:08:52,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:08:52,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:08:52,703 INFO L87 Difference]: Start difference. First operand 26382 states and 32561 transitions. Second operand 3 states. [2018-11-06 19:08:58,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:08:58,290 INFO L93 Difference]: Finished difference Result 64794 states and 81555 transitions. [2018-11-06 19:08:58,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:08:58,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 306 [2018-11-06 19:08:58,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:08:58,336 INFO L225 Difference]: With dead ends: 64794 [2018-11-06 19:08:58,336 INFO L226 Difference]: Without dead ends: 39166 [2018-11-06 19:08:58,365 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:08:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39166 states. [2018-11-06 19:08:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39166 to 39166. [2018-11-06 19:08:58,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39166 states. [2018-11-06 19:08:58,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39166 states to 39166 states and 48595 transitions. [2018-11-06 19:08:58,810 INFO L78 Accepts]: Start accepts. Automaton has 39166 states and 48595 transitions. Word has length 306 [2018-11-06 19:08:58,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:08:58,810 INFO L480 AbstractCegarLoop]: Abstraction has 39166 states and 48595 transitions. [2018-11-06 19:08:58,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:08:58,811 INFO L276 IsEmpty]: Start isEmpty. Operand 39166 states and 48595 transitions. [2018-11-06 19:08:58,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-11-06 19:08:58,844 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:08:58,845 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:08:58,845 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:08:58,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:08:58,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1129100271, now seen corresponding path program 1 times [2018-11-06 19:08:58,850 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:08:58,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:08:58,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:58,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:58,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-11-06 19:08:59,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:08:59,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:08:59,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:08:59,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:08:59,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:08:59,439 INFO L87 Difference]: Start difference. First operand 39166 states and 48595 transitions. Second operand 5 states. [2018-11-06 19:09:10,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:10,078 INFO L93 Difference]: Finished difference Result 140785 states and 178815 transitions. [2018-11-06 19:09:10,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:09:10,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 538 [2018-11-06 19:09:10,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:10,197 INFO L225 Difference]: With dead ends: 140785 [2018-11-06 19:09:10,197 INFO L226 Difference]: Without dead ends: 102373 [2018-11-06 19:09:10,232 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:09:10,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102373 states. [2018-11-06 19:09:11,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102373 to 76805. [2018-11-06 19:09:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76805 states. [2018-11-06 19:09:11,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76805 states to 76805 states and 92090 transitions. [2018-11-06 19:09:11,131 INFO L78 Accepts]: Start accepts. Automaton has 76805 states and 92090 transitions. Word has length 538 [2018-11-06 19:09:11,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:11,132 INFO L480 AbstractCegarLoop]: Abstraction has 76805 states and 92090 transitions. [2018-11-06 19:09:11,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:09:11,132 INFO L276 IsEmpty]: Start isEmpty. Operand 76805 states and 92090 transitions. [2018-11-06 19:09:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2018-11-06 19:09:11,210 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:11,211 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:09:11,211 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:11,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:11,211 INFO L82 PathProgramCache]: Analyzing trace with hash -2045635022, now seen corresponding path program 1 times [2018-11-06 19:09:11,212 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:11,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:11,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:11,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:11,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:12,002 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 74 proven. 8 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-11-06 19:09:12,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:09:12,003 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:09:12,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:12,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:09:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-06 19:09:12,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:09:12,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 19:09:12,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:09:12,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:09:12,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:12,904 INFO L87 Difference]: Start difference. First operand 76805 states and 92090 transitions. Second operand 4 states. [2018-11-06 19:09:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:19,270 INFO L93 Difference]: Finished difference Result 197304 states and 236919 transitions. [2018-11-06 19:09:19,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:09:19,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 673 [2018-11-06 19:09:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:19,391 INFO L225 Difference]: With dead ends: 197304 [2018-11-06 19:09:19,391 INFO L226 Difference]: Without dead ends: 121253 [2018-11-06 19:09:19,446 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:19,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121253 states. [2018-11-06 19:09:20,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121253 to 79061. [2018-11-06 19:09:20,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79061 states. [2018-11-06 19:09:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79061 states to 79061 states and 90652 transitions. [2018-11-06 19:09:20,885 INFO L78 Accepts]: Start accepts. Automaton has 79061 states and 90652 transitions. Word has length 673 [2018-11-06 19:09:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:20,886 INFO L480 AbstractCegarLoop]: Abstraction has 79061 states and 90652 transitions. [2018-11-06 19:09:20,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:09:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 79061 states and 90652 transitions. [2018-11-06 19:09:20,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2018-11-06 19:09:20,927 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:20,928 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:09:20,928 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:20,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:20,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1001829571, now seen corresponding path program 1 times [2018-11-06 19:09:20,929 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:20,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:20,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:20,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:20,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 514 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-11-06 19:09:21,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:09:21,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:09:21,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:09:21,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:09:21,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:09:21,534 INFO L87 Difference]: Start difference. First operand 79061 states and 90652 transitions. Second operand 3 states. [2018-11-06 19:09:26,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:26,194 INFO L93 Difference]: Finished difference Result 186696 states and 213909 transitions. [2018-11-06 19:09:26,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:09:26,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 743 [2018-11-06 19:09:26,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:26,342 INFO L225 Difference]: With dead ends: 186696 [2018-11-06 19:09:26,343 INFO L226 Difference]: Without dead ends: 108389 [2018-11-06 19:09:26,407 INFO L604 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 [2018-11-06 19:09:26,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108389 states. [2018-11-06 19:09:28,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108389 to 103877. [2018-11-06 19:09:28,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103877 states. [2018-11-06 19:09:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103877 states to 103877 states and 116442 transitions. [2018-11-06 19:09:28,416 INFO L78 Accepts]: Start accepts. Automaton has 103877 states and 116442 transitions. Word has length 743 [2018-11-06 19:09:28,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:28,417 INFO L480 AbstractCegarLoop]: Abstraction has 103877 states and 116442 transitions. [2018-11-06 19:09:28,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:09:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 103877 states and 116442 transitions. [2018-11-06 19:09:28,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2018-11-06 19:09:28,468 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:28,469 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-06 19:09:28,469 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:28,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:28,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1691473539, now seen corresponding path program 1 times [2018-11-06 19:09:28,470 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:28,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:28,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:28,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:28,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:29,139 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-11-06 19:09:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 564 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-11-06 19:09:29,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:09:29,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:09:29,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:09:29,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:09:29,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:29,467 INFO L87 Difference]: Start difference. First operand 103877 states and 116442 transitions. Second operand 4 states. [2018-11-06 19:09:34,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:34,667 INFO L93 Difference]: Finished difference Result 213016 states and 238341 transitions. [2018-11-06 19:09:34,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:09:34,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 771 [2018-11-06 19:09:34,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:34,785 INFO L225 Difference]: With dead ends: 213016 [2018-11-06 19:09:34,785 INFO L226 Difference]: Without dead ends: 109893 [2018-11-06 19:09:34,849 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:34,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109893 states. [2018-11-06 19:09:36,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109893 to 109893. [2018-11-06 19:09:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109893 states. [2018-11-06 19:09:36,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109893 states to 109893 states and 122175 transitions. [2018-11-06 19:09:36,420 INFO L78 Accepts]: Start accepts. Automaton has 109893 states and 122175 transitions. Word has length 771 [2018-11-06 19:09:36,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:36,421 INFO L480 AbstractCegarLoop]: Abstraction has 109893 states and 122175 transitions. [2018-11-06 19:09:36,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:09:36,421 INFO L276 IsEmpty]: Start isEmpty. Operand 109893 states and 122175 transitions. [2018-11-06 19:09:36,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2018-11-06 19:09:36,461 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:36,462 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2018-11-06 19:09:36,462 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:36,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:36,463 INFO L82 PathProgramCache]: Analyzing trace with hash -164549747, now seen corresponding path program 1 times [2018-11-06 19:09:36,463 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:36,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:36,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:36,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:36,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-06 19:09:37,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:09:37,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:09:37,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:09:37,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:09:37,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:37,492 INFO L87 Difference]: Start difference. First operand 109893 states and 122175 transitions. Second operand 4 states. [2018-11-06 19:09:44,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:44,798 INFO L93 Difference]: Finished difference Result 219032 states and 243591 transitions. [2018-11-06 19:09:44,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:09:44,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 775 [2018-11-06 19:09:44,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:44,923 INFO L225 Difference]: With dead ends: 219032 [2018-11-06 19:09:44,923 INFO L226 Difference]: Without dead ends: 109893 [2018-11-06 19:09:44,977 INFO L604 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 [2018-11-06 19:09:45,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109893 states. [2018-11-06 19:09:45,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109893 to 106133. [2018-11-06 19:09:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106133 states. [2018-11-06 19:09:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106133 states to 106133 states and 114383 transitions. [2018-11-06 19:09:45,898 INFO L78 Accepts]: Start accepts. Automaton has 106133 states and 114383 transitions. Word has length 775 [2018-11-06 19:09:45,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:45,900 INFO L480 AbstractCegarLoop]: Abstraction has 106133 states and 114383 transitions. [2018-11-06 19:09:45,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:09:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 106133 states and 114383 transitions. [2018-11-06 19:09:45,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2018-11-06 19:09:45,942 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:45,943 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:09:45,943 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:45,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:45,943 INFO L82 PathProgramCache]: Analyzing trace with hash -222630909, now seen corresponding path program 1 times [2018-11-06 19:09:45,944 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:45,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:45,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:45,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:45,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 633 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-11-06 19:09:47,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:09:47,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:09:47,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:09:47,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:09:47,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:47,242 INFO L87 Difference]: Start difference. First operand 106133 states and 114383 transitions. Second operand 4 states. [2018-11-06 19:09:53,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:53,906 INFO L93 Difference]: Finished difference Result 260390 states and 281816 transitions. [2018-11-06 19:09:53,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:09:53,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 804 [2018-11-06 19:09:53,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:54,071 INFO L225 Difference]: With dead ends: 260390 [2018-11-06 19:09:54,071 INFO L226 Difference]: Without dead ends: 155011 [2018-11-06 19:09:54,137 INFO L604 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 [2018-11-06 19:09:54,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155011 states. [2018-11-06 19:09:56,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155011 to 148995. [2018-11-06 19:09:56,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148995 states. [2018-11-06 19:09:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148995 states to 148995 states and 158309 transitions. [2018-11-06 19:09:56,309 INFO L78 Accepts]: Start accepts. Automaton has 148995 states and 158309 transitions. Word has length 804 [2018-11-06 19:09:56,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:56,309 INFO L480 AbstractCegarLoop]: Abstraction has 148995 states and 158309 transitions. [2018-11-06 19:09:56,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:09:56,309 INFO L276 IsEmpty]: Start isEmpty. Operand 148995 states and 158309 transitions. [2018-11-06 19:09:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2018-11-06 19:09:56,358 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:56,358 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:09:56,359 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:56,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:56,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1636925585, now seen corresponding path program 1 times [2018-11-06 19:09:56,359 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:56,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:56,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:56,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:56,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 511 proven. 25 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-11-06 19:10:00,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:10:00,394 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:10:00,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:00,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:10:00,952 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 19:10:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 511 proven. 25 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-11-06 19:10:02,664 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:10:02,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 10 [2018-11-06 19:10:02,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 19:10:02,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 19:10:02,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:10:02,667 INFO L87 Difference]: Start difference. First operand 148995 states and 158309 transitions. Second operand 10 states. [2018-11-06 19:10:33,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:10:33,649 INFO L93 Difference]: Finished difference Result 450610 states and 480153 transitions. [2018-11-06 19:10:33,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-06 19:10:33,649 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 879 [2018-11-06 19:10:33,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:10:33,991 INFO L225 Difference]: With dead ends: 450610 [2018-11-06 19:10:33,991 INFO L226 Difference]: Without dead ends: 298602 [2018-11-06 19:10:34,058 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 888 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=202, Invalid=448, Unknown=0, NotChecked=0, Total=650 [2018-11-06 19:10:34,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298602 states. [2018-11-06 19:10:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298602 to 213659. [2018-11-06 19:10:36,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213659 states. [2018-11-06 19:10:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213659 states to 213659 states and 224346 transitions. [2018-11-06 19:10:37,130 INFO L78 Accepts]: Start accepts. Automaton has 213659 states and 224346 transitions. Word has length 879 [2018-11-06 19:10:37,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:10:37,131 INFO L480 AbstractCegarLoop]: Abstraction has 213659 states and 224346 transitions. [2018-11-06 19:10:37,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 19:10:37,131 INFO L276 IsEmpty]: Start isEmpty. Operand 213659 states and 224346 transitions. [2018-11-06 19:10:37,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1075 [2018-11-06 19:10:37,223 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:10:37,224 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:10:37,224 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:10:37,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:10:37,225 INFO L82 PathProgramCache]: Analyzing trace with hash -369506190, now seen corresponding path program 1 times [2018-11-06 19:10:37,225 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:10:37,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:10:37,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:37,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:37,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:38,160 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-06 19:10:38,470 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 10 [2018-11-06 19:10:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2018-11-06 19:10:40,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:10:40,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:10:40,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:10:40,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:10:40,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:10:40,363 INFO L87 Difference]: Start difference. First operand 213659 states and 224346 transitions. Second operand 4 states. [2018-11-06 19:10:51,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:10:51,116 INFO L93 Difference]: Finished difference Result 443868 states and 465789 transitions. [2018-11-06 19:10:51,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:10:51,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1074 [2018-11-06 19:10:51,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:10:51,379 INFO L225 Difference]: With dead ends: 443868 [2018-11-06 19:10:51,380 INFO L226 Difference]: Without dead ends: 234723 [2018-11-06 19:10:51,488 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:10:51,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234723 states. [2018-11-06 19:10:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234723 to 221181. [2018-11-06 19:10:53,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221181 states. [2018-11-06 19:10:54,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221181 states to 221181 states and 231657 transitions. [2018-11-06 19:10:54,076 INFO L78 Accepts]: Start accepts. Automaton has 221181 states and 231657 transitions. Word has length 1074 [2018-11-06 19:10:54,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:10:54,077 INFO L480 AbstractCegarLoop]: Abstraction has 221181 states and 231657 transitions. [2018-11-06 19:10:54,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:10:54,077 INFO L276 IsEmpty]: Start isEmpty. Operand 221181 states and 231657 transitions. [2018-11-06 19:10:54,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2018-11-06 19:10:54,181 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:10:54,181 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:10:54,182 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:10:54,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:10:54,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2019641473, now seen corresponding path program 1 times [2018-11-06 19:10:54,182 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:10:54,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:10:54,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:54,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:54,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 950 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2018-11-06 19:10:56,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:10:56,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:10:56,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:10:56,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:10:56,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:10:56,102 INFO L87 Difference]: Start difference. First operand 221181 states and 231657 transitions. Second operand 4 states. [2018-11-06 19:11:03,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:11:03,937 INFO L93 Difference]: Finished difference Result 437848 states and 458682 transitions. [2018-11-06 19:11:03,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:11:03,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1092 [2018-11-06 19:11:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:11:04,139 INFO L225 Difference]: With dead ends: 437848 [2018-11-06 19:11:04,139 INFO L226 Difference]: Without dead ends: 179758 [2018-11-06 19:11:04,256 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:11:04,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179758 states. [2018-11-06 19:11:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179758 to 171485. [2018-11-06 19:11:06,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171485 states. [2018-11-06 19:11:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171485 states to 171485 states and 176935 transitions. [2018-11-06 19:11:06,601 INFO L78 Accepts]: Start accepts. Automaton has 171485 states and 176935 transitions. Word has length 1092 [2018-11-06 19:11:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:11:06,602 INFO L480 AbstractCegarLoop]: Abstraction has 171485 states and 176935 transitions. [2018-11-06 19:11:06,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:11:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 171485 states and 176935 transitions. [2018-11-06 19:11:06,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1094 [2018-11-06 19:11:06,675 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:11:06,676 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:11:06,677 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:11:06,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:11:06,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1837986691, now seen corresponding path program 1 times [2018-11-06 19:11:06,677 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:11:06,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:11:06,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:11:06,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:11:06,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:11:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:11:07,515 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 Received shutdown request... [2018-11-06 19:11:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 1101 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-11-06 19:11:08,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:11:08,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:11:08,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:11:08,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:11:08,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:11:08,918 INFO L87 Difference]: Start difference. First operand 171485 states and 176935 transitions. Second operand 5 states. [2018-11-06 19:11:08,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 19:11:08,919 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:11:08,924 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:11:08,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:11:08 BoogieIcfgContainer [2018-11-06 19:11:08,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:11:08,925 INFO L168 Benchmark]: Toolchain (without parser) took 225011.07 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -399.5 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-06 19:11:08,926 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. [2018-11-06 19:11:08,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2250.93 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: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:11:08,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 607.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -964.8 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:11:08,929 INFO L168 Benchmark]: Boogie Preprocessor took 352.57 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: 56.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-11-06 19:11:08,929 INFO L168 Benchmark]: RCFGBuilder took 8557.31 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 244.8 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -228.0 MB). Peak memory consumption was 636.7 MB. Max. memory is 7.1 GB. [2018-11-06 19:11:08,930 INFO L168 Benchmark]: TraceAbstraction took 213237.85 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 533.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-06 19:11:08,935 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 2250.93 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: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 607.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -964.8 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 352.57 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: 56.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8557.31 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 244.8 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -228.0 MB). Peak memory consumption was 636.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213237.85 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 533.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 90). Cancelled while BasicCegarLoop was constructing difference of abstraction (171485states) and FLOYD_HOARE automaton (currently 2 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 213.1s OverallTime, 16 OverallIterations, 6 TraceHistogramMax, 169.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10049 SDtfs, 42194 SDslu, 1745 SDs, 0 SdLazy, 97903 SolverSat, 17914 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 130.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2164 GetRequests, 2075 SyntacticMatches, 19 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221181occurred in iteration=14, 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: 18.6s AutomataMinimizationTime, 15 MinimizatonAttempts, 208388 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 11547 NumberOfCodeBlocks, 11547 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 11527 ConstructedInterpolants, 0 QuantifiedInterpolants, 33440969 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2515 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 10012/10250 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown