java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:21:50,959 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:21:50,963 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:21:50,980 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:21:50,980 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:21:50,982 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:21:50,983 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:21:50,986 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:21:50,989 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:21:50,990 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:21:50,992 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:21:50,993 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:21:50,994 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:21:50,995 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:21:50,996 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:21:50,997 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:21:50,997 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:21:50,999 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:21:51,004 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:21:51,006 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:21:51,008 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:21:51,009 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:21:51,011 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:21:51,011 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:21:51,012 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:21:51,013 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:21:51,014 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:21:51,015 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:21:51,015 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:21:51,016 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:21:51,017 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:21:51,017 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:21:51,020 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:21:51,043 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:21:51,043 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:21:51,044 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:21:51,044 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:21:51,045 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:21:51,045 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:21:51,045 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:21:51,046 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:21:51,046 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:21:51,046 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:21:51,046 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:21:51,046 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:21:51,046 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:21:51,047 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:21:51,047 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:21:51,047 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:21:51,047 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:21:51,047 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:21:51,048 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:21:51,048 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:21:51,048 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:21:51,048 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:21:51,048 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:21:51,049 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:21:51,049 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:21:51,049 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:21:51,049 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:21:51,049 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:21:51,101 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:21:51,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:21:51,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:21:51,120 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:21:51,120 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:21:51,121 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-10-24 16:21:51,186 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/351342294/a28ac655137a464f9bdf3fd3c9e184e8/FLAG40689f8f1 [2018-10-24 16:21:51,958 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:21:51,959 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-10-24 16:21:51,996 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/351342294/a28ac655137a464f9bdf3fd3c9e184e8/FLAG40689f8f1 [2018-10-24 16:21:52,012 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/351342294/a28ac655137a464f9bdf3fd3c9e184e8 [2018-10-24 16:21:52,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:21:52,028 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:21:52,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:21:52,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:21:52,033 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:21:52,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:21:52" (1/1) ... [2018-10-24 16:21:52,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ffc4243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:52, skipping insertion in model container [2018-10-24 16:21:52,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:21:52" (1/1) ... [2018-10-24 16:21:52,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:21:52,210 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:21:53,675 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:21:53,680 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:21:54,431 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:21:54,469 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:21:54,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:54 WrapperNode [2018-10-24 16:21:54,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:21:54,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:21:54,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:21:54,471 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:21:54,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:54" (1/1) ... [2018-10-24 16:21:54,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:54" (1/1) ... [2018-10-24 16:21:55,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:21:55,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:21:55,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:21:55,360 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:21:55,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:54" (1/1) ... [2018-10-24 16:21:55,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:54" (1/1) ... [2018-10-24 16:21:55,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:54" (1/1) ... [2018-10-24 16:21:55,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:54" (1/1) ... [2018-10-24 16:21:55,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:54" (1/1) ... [2018-10-24 16:21:55,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:54" (1/1) ... [2018-10-24 16:21:55,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:54" (1/1) ... [2018-10-24 16:21:55,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:21:55,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:21:55,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:21:55,959 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:21:55,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:21:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:21:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:21:56,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:22:10,124 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:22:10,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:22:10 BoogieIcfgContainer [2018-10-24 16:22:10,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:22:10,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:22:10,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:22:10,130 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:22:10,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:21:52" (1/3) ... [2018-10-24 16:22:10,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e87150c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:22:10, skipping insertion in model container [2018-10-24 16:22:10,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:54" (2/3) ... [2018-10-24 16:22:10,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e87150c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:22:10, skipping insertion in model container [2018-10-24 16:22:10,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:22:10" (3/3) ... [2018-10-24 16:22:10,135 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label26_true-unreach-call.c [2018-10-24 16:22:10,144 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:22:10,154 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:22:10,172 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:22:10,217 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:22:10,218 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:22:10,218 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:22:10,218 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:22:10,218 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:22:10,218 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:22:10,219 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:22:10,219 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:22:10,219 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:22:10,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:22:10,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-24 16:22:10,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:10,276 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:10,278 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:10,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:10,284 INFO L82 PathProgramCache]: Analyzing trace with hash 861450858, now seen corresponding path program 1 times [2018-10-24 16:22:10,286 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:10,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:10,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:10,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:10,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:22:10,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:10,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:22:10,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:10,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:10,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:10,813 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 16:22:25,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:25,753 INFO L93 Difference]: Finished difference Result 3863 states and 7261 transitions. [2018-10-24 16:22:25,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:25,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-10-24 16:22:25,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:25,799 INFO L225 Difference]: With dead ends: 3863 [2018-10-24 16:22:25,799 INFO L226 Difference]: Without dead ends: 2757 [2018-10-24 16:22:25,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:25,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-10-24 16:22:25,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2736. [2018-10-24 16:22:25,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-10-24 16:22:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4486 transitions. [2018-10-24 16:22:25,977 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4486 transitions. Word has length 39 [2018-10-24 16:22:25,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:25,978 INFO L481 AbstractCegarLoop]: Abstraction has 2736 states and 4486 transitions. [2018-10-24 16:22:25,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:25,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4486 transitions. [2018-10-24 16:22:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-24 16:22:25,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:25,992 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:25,992 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:25,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:25,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1023290552, now seen corresponding path program 1 times [2018-10-24 16:22:25,993 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:25,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:25,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:25,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:25,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:22:26,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:26,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:22:26,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:26,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:26,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:26,262 INFO L87 Difference]: Start difference. First operand 2736 states and 4486 transitions. Second operand 4 states. [2018-10-24 16:22:40,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:40,685 INFO L93 Difference]: Finished difference Result 10268 states and 17048 transitions. [2018-10-24 16:22:40,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:40,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-10-24 16:22:40,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:40,728 INFO L225 Difference]: With dead ends: 10268 [2018-10-24 16:22:40,729 INFO L226 Difference]: Without dead ends: 7534 [2018-10-24 16:22:40,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:40,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7534 states. [2018-10-24 16:22:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7534 to 7528. [2018-10-24 16:22:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7528 states. [2018-10-24 16:22:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 11328 transitions. [2018-10-24 16:22:40,898 INFO L78 Accepts]: Start accepts. Automaton has 7528 states and 11328 transitions. Word has length 126 [2018-10-24 16:22:40,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:40,899 INFO L481 AbstractCegarLoop]: Abstraction has 7528 states and 11328 transitions. [2018-10-24 16:22:40,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 7528 states and 11328 transitions. [2018-10-24 16:22:40,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 16:22:40,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:40,910 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:40,911 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:40,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:40,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1950410039, now seen corresponding path program 1 times [2018-10-24 16:22:40,911 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:40,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:40,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:40,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:40,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:41,295 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:22:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-24 16:22:41,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:22:41,317 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:22:41,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:41,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:22:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:22:41,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:22:41,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:22:41,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:41,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:41,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:41,473 INFO L87 Difference]: Start difference. First operand 7528 states and 11328 transitions. Second operand 4 states. [2018-10-24 16:22:55,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:55,852 INFO L93 Difference]: Finished difference Result 26960 states and 40379 transitions. [2018-10-24 16:22:55,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:55,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-10-24 16:22:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:55,943 INFO L225 Difference]: With dead ends: 26960 [2018-10-24 16:22:55,943 INFO L226 Difference]: Without dead ends: 19434 [2018-10-24 16:22:55,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:55,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19434 states. [2018-10-24 16:22:56,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19434 to 13833. [2018-10-24 16:22:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13833 states. [2018-10-24 16:22:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13833 states to 13833 states and 19394 transitions. [2018-10-24 16:22:56,306 INFO L78 Accepts]: Start accepts. Automaton has 13833 states and 19394 transitions. Word has length 136 [2018-10-24 16:22:56,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:56,307 INFO L481 AbstractCegarLoop]: Abstraction has 13833 states and 19394 transitions. [2018-10-24 16:22:56,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:56,307 INFO L276 IsEmpty]: Start isEmpty. Operand 13833 states and 19394 transitions. [2018-10-24 16:22:56,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-24 16:22:56,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:56,315 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:56,316 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:56,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:56,316 INFO L82 PathProgramCache]: Analyzing trace with hash -505956794, now seen corresponding path program 1 times [2018-10-24 16:22:56,316 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:56,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:56,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:56,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:56,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:22:56,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:56,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:22:56,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:56,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:56,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:56,673 INFO L87 Difference]: Start difference. First operand 13833 states and 19394 transitions. Second operand 4 states. [2018-10-24 16:23:07,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:07,445 INFO L93 Difference]: Finished difference Result 34803 states and 47475 transitions. [2018-10-24 16:23:07,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:07,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2018-10-24 16:23:07,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:07,488 INFO L225 Difference]: With dead ends: 34803 [2018-10-24 16:23:07,488 INFO L226 Difference]: Without dead ends: 20972 [2018-10-24 16:23:07,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:07,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20972 states. [2018-10-24 16:23:07,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20972 to 18566. [2018-10-24 16:23:07,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18566 states. [2018-10-24 16:23:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18566 states to 18566 states and 24842 transitions. [2018-10-24 16:23:07,765 INFO L78 Accepts]: Start accepts. Automaton has 18566 states and 24842 transitions. Word has length 156 [2018-10-24 16:23:07,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:07,765 INFO L481 AbstractCegarLoop]: Abstraction has 18566 states and 24842 transitions. [2018-10-24 16:23:07,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:07,766 INFO L276 IsEmpty]: Start isEmpty. Operand 18566 states and 24842 transitions. [2018-10-24 16:23:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-24 16:23:07,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:07,769 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:23:07,770 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:07,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:07,770 INFO L82 PathProgramCache]: Analyzing trace with hash 270634656, now seen corresponding path program 1 times [2018-10-24 16:23:07,770 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:07,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:07,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:07,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:07,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:08,131 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:23:08,271 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:23:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-10-24 16:23:08,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:08,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:08,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:23:08,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:23:08,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:23:08,346 INFO L87 Difference]: Start difference. First operand 18566 states and 24842 transitions. Second operand 5 states. [2018-10-24 16:23:19,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:19,671 INFO L93 Difference]: Finished difference Result 55253 states and 73251 transitions. [2018-10-24 16:23:19,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:23:19,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2018-10-24 16:23:19,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:19,752 INFO L225 Difference]: With dead ends: 55253 [2018-10-24 16:23:19,752 INFO L226 Difference]: Without dead ends: 36689 [2018-10-24 16:23:19,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:23:19,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36689 states. [2018-10-24 16:23:20,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36689 to 36688. [2018-10-24 16:23:20,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36688 states. [2018-10-24 16:23:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36688 states to 36688 states and 45849 transitions. [2018-10-24 16:23:20,329 INFO L78 Accepts]: Start accepts. Automaton has 36688 states and 45849 transitions. Word has length 185 [2018-10-24 16:23:20,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:20,330 INFO L481 AbstractCegarLoop]: Abstraction has 36688 states and 45849 transitions. [2018-10-24 16:23:20,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:23:20,330 INFO L276 IsEmpty]: Start isEmpty. Operand 36688 states and 45849 transitions. [2018-10-24 16:23:20,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-24 16:23:20,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:20,339 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:23:20,339 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:20,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:20,340 INFO L82 PathProgramCache]: Analyzing trace with hash -561417294, now seen corresponding path program 1 times [2018-10-24 16:23:20,341 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:20,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:20,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:20,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:20,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:20,817 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:23:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:23:21,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:21,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:23:21,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:21,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:21,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:21,343 INFO L87 Difference]: Start difference. First operand 36688 states and 45849 transitions. Second operand 4 states. [2018-10-24 16:23:30,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:30,994 INFO L93 Difference]: Finished difference Result 111190 states and 140637 transitions. [2018-10-24 16:23:30,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:30,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 282 [2018-10-24 16:23:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:31,093 INFO L225 Difference]: With dead ends: 111190 [2018-10-24 16:23:31,093 INFO L226 Difference]: Without dead ends: 64978 [2018-10-24 16:23:31,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:31,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64978 states. [2018-10-24 16:23:32,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64978 to 57884. [2018-10-24 16:23:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57884 states. [2018-10-24 16:23:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57884 states to 57884 states and 67207 transitions. [2018-10-24 16:23:32,456 INFO L78 Accepts]: Start accepts. Automaton has 57884 states and 67207 transitions. Word has length 282 [2018-10-24 16:23:32,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:32,457 INFO L481 AbstractCegarLoop]: Abstraction has 57884 states and 67207 transitions. [2018-10-24 16:23:32,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:32,457 INFO L276 IsEmpty]: Start isEmpty. Operand 57884 states and 67207 transitions. [2018-10-24 16:23:32,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-24 16:23:32,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:32,468 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:32,468 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:32,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:32,469 INFO L82 PathProgramCache]: Analyzing trace with hash 371170908, now seen corresponding path program 1 times [2018-10-24 16:23:32,469 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:32,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:32,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:32,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:32,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-10-24 16:23:32,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:32,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:32,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:23:32,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:23:32,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:23:32,883 INFO L87 Difference]: Start difference. First operand 57884 states and 67207 transitions. Second operand 5 states. [2018-10-24 16:23:51,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:51,402 INFO L93 Difference]: Finished difference Result 208232 states and 242136 transitions. [2018-10-24 16:23:51,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:23:51,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2018-10-24 16:23:51,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:51,565 INFO L225 Difference]: With dead ends: 208232 [2018-10-24 16:23:51,565 INFO L226 Difference]: Without dead ends: 151138 [2018-10-24 16:23:51,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:23:51,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151138 states. [2018-10-24 16:23:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151138 to 149399. [2018-10-24 16:23:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149399 states. [2018-10-24 16:23:53,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149399 states to 149399 states and 169419 transitions. [2018-10-24 16:23:53,387 INFO L78 Accepts]: Start accepts. Automaton has 149399 states and 169419 transitions. Word has length 327 [2018-10-24 16:23:53,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:53,388 INFO L481 AbstractCegarLoop]: Abstraction has 149399 states and 169419 transitions. [2018-10-24 16:23:53,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:23:53,388 INFO L276 IsEmpty]: Start isEmpty. Operand 149399 states and 169419 transitions. [2018-10-24 16:23:53,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-10-24 16:23:53,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:53,397 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:53,398 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:53,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:53,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1170171746, now seen corresponding path program 1 times [2018-10-24 16:23:53,398 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:53,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:53,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:53,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:53,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 380 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-10-24 16:23:53,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:53,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:53,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:53,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:53,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:53,709 INFO L87 Difference]: Start difference. First operand 149399 states and 169419 transitions. Second operand 4 states. [2018-10-24 16:24:07,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:07,127 INFO L93 Difference]: Finished difference Result 338238 states and 384924 transitions. [2018-10-24 16:24:07,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:07,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 385 [2018-10-24 16:24:07,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:07,364 INFO L225 Difference]: With dead ends: 338238 [2018-10-24 16:24:07,364 INFO L226 Difference]: Without dead ends: 189629 [2018-10-24 16:24:07,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:07,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189629 states. [2018-10-24 16:24:10,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189629 to 182492. [2018-10-24 16:24:10,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182492 states. [2018-10-24 16:24:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182492 states to 182492 states and 201556 transitions. [2018-10-24 16:24:10,586 INFO L78 Accepts]: Start accepts. Automaton has 182492 states and 201556 transitions. Word has length 385 [2018-10-24 16:24:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:10,586 INFO L481 AbstractCegarLoop]: Abstraction has 182492 states and 201556 transitions. [2018-10-24 16:24:10,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:24:10,586 INFO L276 IsEmpty]: Start isEmpty. Operand 182492 states and 201556 transitions. [2018-10-24 16:24:10,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-10-24 16:24:10,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:10,593 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:10,593 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:10,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:10,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1036911177, now seen corresponding path program 1 times [2018-10-24 16:24:10,594 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:10,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:10,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:10,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:10,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-24 16:24:11,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:11,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:24:11,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:24:11,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:24:11,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:24:11,031 INFO L87 Difference]: Start difference. First operand 182492 states and 201556 transitions. Second operand 3 states. [2018-10-24 16:24:17,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:17,614 INFO L93 Difference]: Finished difference Result 364192 states and 402318 transitions. [2018-10-24 16:24:17,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:24:17,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 417 [2018-10-24 16:24:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:17,881 INFO L225 Difference]: With dead ends: 364192 [2018-10-24 16:24:17,881 INFO L226 Difference]: Without dead ends: 182490 [2018-10-24 16:24:17,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:24:18,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182490 states. [2018-10-24 16:24:20,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182490 to 180125. [2018-10-24 16:24:20,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180125 states. [2018-10-24 16:24:21,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180125 states to 180125 states and 193558 transitions. [2018-10-24 16:24:21,025 INFO L78 Accepts]: Start accepts. Automaton has 180125 states and 193558 transitions. Word has length 417 [2018-10-24 16:24:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:21,026 INFO L481 AbstractCegarLoop]: Abstraction has 180125 states and 193558 transitions. [2018-10-24 16:24:21,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:24:21,026 INFO L276 IsEmpty]: Start isEmpty. Operand 180125 states and 193558 transitions. [2018-10-24 16:24:21,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-10-24 16:24:21,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:21,040 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:21,040 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:21,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:21,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1166310296, now seen corresponding path program 1 times [2018-10-24 16:24:21,041 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:21,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:21,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:21,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:21,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-10-24 16:24:21,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:21,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:24:21,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:24:21,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:24:21,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:21,900 INFO L87 Difference]: Start difference. First operand 180125 states and 193558 transitions. Second operand 4 states. [2018-10-24 16:24:31,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:31,310 INFO L93 Difference]: Finished difference Result 361813 states and 389400 transitions. [2018-10-24 16:24:31,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:31,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 538 [2018-10-24 16:24:31,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:31,531 INFO L225 Difference]: With dead ends: 361813 [2018-10-24 16:24:31,531 INFO L226 Difference]: Without dead ends: 182478 [2018-10-24 16:24:31,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182478 states. [2018-10-24 16:24:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182478 to 180901. [2018-10-24 16:24:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180901 states. [2018-10-24 16:24:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180901 states to 180901 states and 194252 transitions. [2018-10-24 16:24:34,900 INFO L78 Accepts]: Start accepts. Automaton has 180901 states and 194252 transitions. Word has length 538 [2018-10-24 16:24:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:34,902 INFO L481 AbstractCegarLoop]: Abstraction has 180901 states and 194252 transitions. [2018-10-24 16:24:34,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:24:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 180901 states and 194252 transitions. [2018-10-24 16:24:34,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-10-24 16:24:34,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:34,917 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:34,918 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:34,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:34,918 INFO L82 PathProgramCache]: Analyzing trace with hash 2058101047, now seen corresponding path program 1 times [2018-10-24 16:24:34,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:34,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:34,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:34,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:34,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 754 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-10-24 16:24:40,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:40,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:24:40,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:24:40,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:24:40,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:40,372 INFO L87 Difference]: Start difference. First operand 180901 states and 194252 transitions. Second operand 4 states. [2018-10-24 16:24:54,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:54,789 INFO L93 Difference]: Finished difference Result 429692 states and 460807 transitions. [2018-10-24 16:24:54,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:54,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 592 [2018-10-24 16:24:54,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:55,045 INFO L225 Difference]: With dead ends: 429692 [2018-10-24 16:24:55,046 INFO L226 Difference]: Without dead ends: 249581 [2018-10-24 16:24:55,122 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249581 states. [2018-10-24 16:24:57,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249581 to 240013. [2018-10-24 16:24:57,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240013 states. [2018-10-24 16:24:58,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240013 states to 240013 states and 256772 transitions. [2018-10-24 16:24:58,698 INFO L78 Accepts]: Start accepts. Automaton has 240013 states and 256772 transitions. Word has length 592 [2018-10-24 16:24:58,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:58,699 INFO L481 AbstractCegarLoop]: Abstraction has 240013 states and 256772 transitions. [2018-10-24 16:24:58,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:24:58,699 INFO L276 IsEmpty]: Start isEmpty. Operand 240013 states and 256772 transitions. [2018-10-24 16:24:58,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2018-10-24 16:24:58,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:58,803 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:58,803 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:58,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:58,804 INFO L82 PathProgramCache]: Analyzing trace with hash -727629188, now seen corresponding path program 1 times [2018-10-24 16:24:58,804 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:58,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:58,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:58,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:58,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 1349 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2018-10-24 16:25:00,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:00,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:25:00,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:25:00,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:25:00,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:00,310 INFO L87 Difference]: Start difference. First operand 240013 states and 256772 transitions. Second operand 4 states. [2018-10-24 16:25:10,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:10,420 INFO L93 Difference]: Finished difference Result 504442 states and 540392 transitions. [2018-10-24 16:25:10,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:25:10,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1051 [2018-10-24 16:25:10,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:10,720 INFO L225 Difference]: With dead ends: 504442 [2018-10-24 16:25:10,720 INFO L226 Difference]: Without dead ends: 265219 [2018-10-24 16:25:10,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:11,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265219 states. [2018-10-24 16:25:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265219 to 262822. [2018-10-24 16:25:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262822 states. [2018-10-24 16:25:14,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262822 states to 262822 states and 276558 transitions. [2018-10-24 16:25:14,530 INFO L78 Accepts]: Start accepts. Automaton has 262822 states and 276558 transitions. Word has length 1051 [2018-10-24 16:25:14,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:14,531 INFO L481 AbstractCegarLoop]: Abstraction has 262822 states and 276558 transitions. [2018-10-24 16:25:14,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:25:14,532 INFO L276 IsEmpty]: Start isEmpty. Operand 262822 states and 276558 transitions. [2018-10-24 16:25:14,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1181 [2018-10-24 16:25:14,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:14,660 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:25:14,660 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:14,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:14,661 INFO L82 PathProgramCache]: Analyzing trace with hash 43602950, now seen corresponding path program 1 times [2018-10-24 16:25:14,661 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:14,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:14,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:14,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:14,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2079 backedges. 1438 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2018-10-24 16:25:16,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:16,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:25:16,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:25:16,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:25:16,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:25:16,969 INFO L87 Difference]: Start difference. First operand 262822 states and 276558 transitions. Second operand 3 states. [2018-10-24 16:25:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:23,808 INFO L93 Difference]: Finished difference Result 522456 states and 549531 transitions. [2018-10-24 16:25:23,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:25:23,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1180 [2018-10-24 16:25:23,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:24,126 INFO L225 Difference]: With dead ends: 522456 [2018-10-24 16:25:24,126 INFO L226 Difference]: Without dead ends: 257265 [2018-10-24 16:25:24,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:25:24,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257265 states. [2018-10-24 16:25:32,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257265 to 254107. [2018-10-24 16:25:32,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254107 states. [2018-10-24 16:25:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254107 states to 254107 states and 264115 transitions. [2018-10-24 16:25:33,065 INFO L78 Accepts]: Start accepts. Automaton has 254107 states and 264115 transitions. Word has length 1180 [2018-10-24 16:25:33,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:33,066 INFO L481 AbstractCegarLoop]: Abstraction has 254107 states and 264115 transitions. [2018-10-24 16:25:33,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:25:33,066 INFO L276 IsEmpty]: Start isEmpty. Operand 254107 states and 264115 transitions. [2018-10-24 16:25:33,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1329 [2018-10-24 16:25:33,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:33,165 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:25:33,165 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:33,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:33,166 INFO L82 PathProgramCache]: Analyzing trace with hash -670892625, now seen corresponding path program 1 times [2018-10-24 16:25:33,166 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:33,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:33,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:33,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:33,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 16:25:34,318 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:25:34,324 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:25:34,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:25:34 BoogieIcfgContainer [2018-10-24 16:25:34,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:25:34,325 INFO L168 Benchmark]: Toolchain (without parser) took 222298.85 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 16:25:34,327 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:25:34,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2441.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:25:34,329 INFO L168 Benchmark]: Boogie Procedure Inliner took 888.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.5 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:25:34,330 INFO L168 Benchmark]: Boogie Preprocessor took 599.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 70.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:25:34,331 INFO L168 Benchmark]: RCFGBuilder took 14166.64 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 247.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 15.8 MB). Peak memory consumption was 608.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:25:34,332 INFO L168 Benchmark]: TraceAbstraction took 204197.97 ms. Allocated memory was 2.6 GB in the beginning and 5.2 GB in the end (delta: 2.7 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 16:25:34,340 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2441.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 888.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.5 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 599.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 70.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14166.64 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 247.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 15.8 MB). Peak memory consumption was 608.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204197.97 ms. Allocated memory was 2.6 GB in the beginning and 5.2 GB in the end (delta: 2.7 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while BasicCegarLoop was analyzing trace of length 1329 with TraceHistMax 7,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 1327 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 204.1s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 157.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10123 SDtfs, 27673 SDslu, 3048 SDs, 0 SdLazy, 58067 SolverSat, 15479 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 127.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262822occurred in iteration=12, 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: 30.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 43070 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 5550 NumberOfCodeBlocks, 5550 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5536 ConstructedInterpolants, 0 QuantifiedInterpolants, 6209002 SizeOfPredicates, 1 NumberOfNonLiveVariables, 202 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 14 InterpolantComputations, 13 PerfectInterpolantSequences, 8077/8081 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown