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_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:23:39,992 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:23:39,994 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:23:40,007 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:23:40,008 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:23:40,009 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:23:40,011 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:23:40,012 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:23:40,014 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:23:40,015 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:23:40,016 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:23:40,016 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:23:40,017 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:23:40,018 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:23:40,019 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:23:40,020 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:23:40,021 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:23:40,023 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:23:40,025 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:23:40,027 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:23:40,028 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:23:40,029 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:23:40,031 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:23:40,046 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 16:23:40,072 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:23:40,072 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:23:40,073 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:23:40,073 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:23:40,078 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:23:40,078 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:23:40,078 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:23:40,078 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:23:40,079 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:23:40,080 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:23:40,080 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:23:40,080 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:23:40,080 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:23:40,081 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:23:40,081 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:23:40,081 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:23:40,081 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:23:40,081 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:23:40,082 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:23:40,082 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:23:40,082 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:23:40,082 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:23:40,082 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:23:40,083 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:23:40,083 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:23:40,083 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:23:40,083 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:23:40,083 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:23:40,148 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:23:40,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:23:40,166 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:23:40,168 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:23:40,168 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:23:40,169 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label41_true-unreach-call.c [2018-10-24 16:23:40,226 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4b72a14a6/89366a45406546b7818071f4a1cf8a3f/FLAGa919521a5 [2018-10-24 16:23:41,031 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:23:41,032 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label41_true-unreach-call.c [2018-10-24 16:23:41,074 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4b72a14a6/89366a45406546b7818071f4a1cf8a3f/FLAGa919521a5 [2018-10-24 16:23:41,096 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4b72a14a6/89366a45406546b7818071f4a1cf8a3f [2018-10-24 16:23:41,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:23:41,110 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:23:41,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:23:41,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:23:41,117 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:23:41,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:23:41" (1/1) ... [2018-10-24 16:23:41,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a79e33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:41, skipping insertion in model container [2018-10-24 16:23:41,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:23:41" (1/1) ... [2018-10-24 16:23:41,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:23:41,300 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:23:42,661 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:23:42,666 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:23:43,447 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:23:43,486 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:23:43,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:43 WrapperNode [2018-10-24 16:23:43,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:23:43,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:23:43,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:23:43,489 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:23:43,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:43" (1/1) ... [2018-10-24 16:23:43,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:43" (1/1) ... [2018-10-24 16:23:44,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:23:44,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:23:44,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:23:44,295 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:23:44,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:43" (1/1) ... [2018-10-24 16:23:44,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:43" (1/1) ... [2018-10-24 16:23:44,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:43" (1/1) ... [2018-10-24 16:23:44,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:43" (1/1) ... [2018-10-24 16:23:44,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:43" (1/1) ... [2018-10-24 16:23:44,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:43" (1/1) ... [2018-10-24 16:23:44,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:43" (1/1) ... [2018-10-24 16:23:44,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:23:44,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:23:44,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:23:44,721 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:23:44,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:43" (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 16:23:44,789 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:23:44,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:23:44,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:24:00,434 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:24:00,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:24:00 BoogieIcfgContainer [2018-10-24 16:24:00,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:24:00,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:24:00,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:24:00,440 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:24:00,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:23:41" (1/3) ... [2018-10-24 16:24:00,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671161ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:24:00, skipping insertion in model container [2018-10-24 16:24:00,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:43" (2/3) ... [2018-10-24 16:24:00,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671161ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:24:00, skipping insertion in model container [2018-10-24 16:24:00,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:24:00" (3/3) ... [2018-10-24 16:24:00,444 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label41_true-unreach-call.c [2018-10-24 16:24:00,454 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:24:00,468 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:24:00,486 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:24:00,530 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:24:00,531 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:24:00,531 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:24:00,531 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:24:00,531 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:24:00,531 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:24:00,532 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:24:00,532 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:24:00,532 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:24:00,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:24:00,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-24 16:24:00,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:00,580 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:00,582 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:00,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:00,589 INFO L82 PathProgramCache]: Analyzing trace with hash 147574146, now seen corresponding path program 1 times [2018-10-24 16:24:00,591 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:00,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:00,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:00,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:00,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:02,054 WARN L179 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:24:02,233 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 16:24:02,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:02,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:24:02,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:24:02,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:24:02,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:02,259 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-10-24 16:24:02,537 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 16:24:26,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:26,124 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-10-24 16:24:26,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:24:26,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2018-10-24 16:24:26,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:26,182 INFO L225 Difference]: With dead ends: 4624 [2018-10-24 16:24:26,182 INFO L226 Difference]: Without dead ends: 3515 [2018-10-24 16:24:26,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:24:26,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-10-24 16:24:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-10-24 16:24:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-10-24 16:24:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-10-24 16:24:26,387 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 45 [2018-10-24 16:24:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:26,388 INFO L481 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-10-24 16:24:26,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:24:26,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-10-24 16:24:26,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-24 16:24:26,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:26,397 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:26,397 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:26,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:26,398 INFO L82 PathProgramCache]: Analyzing trace with hash -2140213962, now seen corresponding path program 1 times [2018-10-24 16:24:26,398 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:26,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:26,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:26,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:26,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:24:26,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:24:26,824 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 16:24:26,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:26,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:24:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:24:27,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:24:27,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-10-24 16:24:27,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:24:27,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:24:27,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:27,031 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 5 states. [2018-10-24 16:24:51,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:51,457 INFO L93 Difference]: Finished difference Result 12020 states and 19621 transitions. [2018-10-24 16:24:51,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:24:51,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2018-10-24 16:24:51,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:51,505 INFO L225 Difference]: With dead ends: 12020 [2018-10-24 16:24:51,505 INFO L226 Difference]: Without dead ends: 9296 [2018-10-24 16:24:51,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9296 states. [2018-10-24 16:24:51,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9296 to 9113. [2018-10-24 16:24:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9113 states. [2018-10-24 16:24:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9113 states to 9113 states and 13282 transitions. [2018-10-24 16:24:51,708 INFO L78 Accepts]: Start accepts. Automaton has 9113 states and 13282 transitions. Word has length 171 [2018-10-24 16:24:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:51,709 INFO L481 AbstractCegarLoop]: Abstraction has 9113 states and 13282 transitions. [2018-10-24 16:24:51,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:24:51,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9113 states and 13282 transitions. [2018-10-24 16:24:51,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-24 16:24:51,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:51,718 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:24:51,718 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:51,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:51,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1048103303, now seen corresponding path program 1 times [2018-10-24 16:24:51,719 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:51,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:51,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:51,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:51,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 16:24:52,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:24:52,123 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-24 16:24:52,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:24:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:52,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:24:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:24:52,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:24:52,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:24:52,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:24:52,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:24:52,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:52,304 INFO L87 Difference]: Start difference. First operand 9113 states and 13282 transitions. Second operand 4 states. [2018-10-24 16:25:02,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:02,987 INFO L93 Difference]: Finished difference Result 31691 states and 47556 transitions. [2018-10-24 16:25:02,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:25:02,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2018-10-24 16:25:02,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:03,077 INFO L225 Difference]: With dead ends: 31691 [2018-10-24 16:25:03,077 INFO L226 Difference]: Without dead ends: 23368 [2018-10-24 16:25:03,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 214 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 16:25:03,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23368 states. [2018-10-24 16:25:03,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23368 to 15429. [2018-10-24 16:25:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15429 states. [2018-10-24 16:25:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15429 states to 15429 states and 21006 transitions. [2018-10-24 16:25:03,422 INFO L78 Accepts]: Start accepts. Automaton has 15429 states and 21006 transitions. Word has length 214 [2018-10-24 16:25:03,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:03,423 INFO L481 AbstractCegarLoop]: Abstraction has 15429 states and 21006 transitions. [2018-10-24 16:25:03,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:25:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 15429 states and 21006 transitions. [2018-10-24 16:25:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-24 16:25:03,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:03,428 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:25:03,429 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:03,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:03,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1073278646, now seen corresponding path program 1 times [2018-10-24 16:25:03,429 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:03,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:03,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:03,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:03,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:25:04,126 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:04,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:25:04,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:25:04,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:25:04,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:25:04,128 INFO L87 Difference]: Start difference. First operand 15429 states and 21006 transitions. Second operand 5 states. [2018-10-24 16:25:23,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:23,371 INFO L93 Difference]: Finished difference Result 43771 states and 61912 transitions. [2018-10-24 16:25:23,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:25:23,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2018-10-24 16:25:23,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:23,433 INFO L225 Difference]: With dead ends: 43771 [2018-10-24 16:25:23,433 INFO L226 Difference]: Without dead ends: 29132 [2018-10-24 16:25:23,452 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 16:25:23,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29132 states. [2018-10-24 16:25:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29132 to 28950. [2018-10-24 16:25:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28950 states. [2018-10-24 16:25:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28950 states to 28950 states and 39215 transitions. [2018-10-24 16:25:23,882 INFO L78 Accepts]: Start accepts. Automaton has 28950 states and 39215 transitions. Word has length 228 [2018-10-24 16:25:23,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:23,882 INFO L481 AbstractCegarLoop]: Abstraction has 28950 states and 39215 transitions. [2018-10-24 16:25:23,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:25:23,883 INFO L276 IsEmpty]: Start isEmpty. Operand 28950 states and 39215 transitions. [2018-10-24 16:25:23,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-24 16:25:23,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:23,891 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:25:23,891 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:23,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:23,892 INFO L82 PathProgramCache]: Analyzing trace with hash 867196428, now seen corresponding path program 1 times [2018-10-24 16:25:23,892 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:23,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:23,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:23,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:23,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:25:24,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:24,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:25:24,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:25:24,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:25:24,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:25:24,181 INFO L87 Difference]: Start difference. First operand 28950 states and 39215 transitions. Second operand 3 states. [2018-10-24 16:25:31,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:31,826 INFO L93 Difference]: Finished difference Result 60244 states and 81352 transitions. [2018-10-24 16:25:31,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:25:31,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 275 [2018-10-24 16:25:31,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:31,899 INFO L225 Difference]: With dead ends: 60244 [2018-10-24 16:25:31,899 INFO L226 Difference]: Without dead ends: 32084 [2018-10-24 16:25:31,932 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 16:25:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32084 states. [2018-10-24 16:25:32,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32084 to 30501. [2018-10-24 16:25:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30501 states. [2018-10-24 16:25:32,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30501 states to 30501 states and 37474 transitions. [2018-10-24 16:25:32,712 INFO L78 Accepts]: Start accepts. Automaton has 30501 states and 37474 transitions. Word has length 275 [2018-10-24 16:25:32,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:32,712 INFO L481 AbstractCegarLoop]: Abstraction has 30501 states and 37474 transitions. [2018-10-24 16:25:32,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:25:32,713 INFO L276 IsEmpty]: Start isEmpty. Operand 30501 states and 37474 transitions. [2018-10-24 16:25:32,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-24 16:25:32,720 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:32,721 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:25:32,721 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:32,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:32,721 INFO L82 PathProgramCache]: Analyzing trace with hash 2123637848, now seen corresponding path program 1 times [2018-10-24 16:25:32,722 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:32,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:32,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:32,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:32,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:25:33,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:33,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:25:33,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:25:33,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:25:33,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:33,110 INFO L87 Difference]: Start difference. First operand 30501 states and 37474 transitions. Second operand 4 states. [2018-10-24 16:25:44,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:44,519 INFO L93 Difference]: Finished difference Result 105173 states and 130876 transitions. [2018-10-24 16:25:44,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:25:44,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 285 [2018-10-24 16:25:44,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:44,609 INFO L225 Difference]: With dead ends: 105173 [2018-10-24 16:25:44,609 INFO L226 Difference]: Without dead ends: 75462 [2018-10-24 16:25:44,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:44,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75462 states. [2018-10-24 16:25:45,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75462 to 75413. [2018-10-24 16:25:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75413 states. [2018-10-24 16:25:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75413 states to 75413 states and 89093 transitions. [2018-10-24 16:25:45,768 INFO L78 Accepts]: Start accepts. Automaton has 75413 states and 89093 transitions. Word has length 285 [2018-10-24 16:25:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:45,768 INFO L481 AbstractCegarLoop]: Abstraction has 75413 states and 89093 transitions. [2018-10-24 16:25:45,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:25:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 75413 states and 89093 transitions. [2018-10-24 16:25:45,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-10-24 16:25:45,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:45,787 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:25:45,787 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:45,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:45,787 INFO L82 PathProgramCache]: Analyzing trace with hash 828105228, now seen corresponding path program 1 times [2018-10-24 16:25:45,788 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:45,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:45,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:45,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:45,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-24 16:25:46,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:46,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:25:46,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:25:46,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:25:46,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:46,117 INFO L87 Difference]: Start difference. First operand 75413 states and 89093 transitions. Second operand 4 states. [2018-10-24 16:25:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:56,989 INFO L93 Difference]: Finished difference Result 217005 states and 257645 transitions. [2018-10-24 16:25:56,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:25:56,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2018-10-24 16:25:56,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:57,180 INFO L225 Difference]: With dead ends: 217005 [2018-10-24 16:25:57,180 INFO L226 Difference]: Without dead ends: 136054 [2018-10-24 16:25:57,240 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 16:25:57,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136054 states. [2018-10-24 16:25:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136054 to 122634. [2018-10-24 16:25:58,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122634 states. [2018-10-24 16:25:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122634 states to 122634 states and 138641 transitions. [2018-10-24 16:25:58,490 INFO L78 Accepts]: Start accepts. Automaton has 122634 states and 138641 transitions. Word has length 325 [2018-10-24 16:25:58,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:58,491 INFO L481 AbstractCegarLoop]: Abstraction has 122634 states and 138641 transitions. [2018-10-24 16:25:58,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:25:58,491 INFO L276 IsEmpty]: Start isEmpty. Operand 122634 states and 138641 transitions. [2018-10-24 16:25:58,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-24 16:25:58,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:58,506 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:25:58,506 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:58,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:58,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1198337718, now seen corresponding path program 1 times [2018-10-24 16:25:58,507 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:58,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:58,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:58,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:58,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:58,938 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:25:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 16:25:59,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:59,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:25:59,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:25:59,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:25:59,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:59,193 INFO L87 Difference]: Start difference. First operand 122634 states and 138641 transitions. Second operand 4 states. [2018-10-24 16:26:11,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:11,624 INFO L93 Difference]: Finished difference Result 254723 states and 287438 transitions. [2018-10-24 16:26:11,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:26:11,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 426 [2018-10-24 16:26:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:11,777 INFO L225 Difference]: With dead ends: 254723 [2018-10-24 16:26:11,778 INFO L226 Difference]: Without dead ends: 124162 [2018-10-24 16:26:11,841 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 16:26:11,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124162 states. [2018-10-24 16:26:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124162 to 111545. [2018-10-24 16:26:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111545 states. [2018-10-24 16:26:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111545 states to 111545 states and 124284 transitions. [2018-10-24 16:26:12,926 INFO L78 Accepts]: Start accepts. Automaton has 111545 states and 124284 transitions. Word has length 426 [2018-10-24 16:26:12,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:12,927 INFO L481 AbstractCegarLoop]: Abstraction has 111545 states and 124284 transitions. [2018-10-24 16:26:12,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:26:12,927 INFO L276 IsEmpty]: Start isEmpty. Operand 111545 states and 124284 transitions. [2018-10-24 16:26:12,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-10-24 16:26:12,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:12,937 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 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 16:26:12,938 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:12,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:12,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1611013146, now seen corresponding path program 1 times [2018-10-24 16:26:12,938 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:12,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:12,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:12,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:12,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-24 16:26:13,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:26:13,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:26:13,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:26:13,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:26:13,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:13,266 INFO L87 Difference]: Start difference. First operand 111545 states and 124284 transitions. Second operand 4 states. [2018-10-24 16:26:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:25,438 INFO L93 Difference]: Finished difference Result 269623 states and 301412 transitions. [2018-10-24 16:26:25,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:26:25,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 449 [2018-10-24 16:26:25,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:25,667 INFO L225 Difference]: With dead ends: 269623 [2018-10-24 16:26:25,668 INFO L226 Difference]: Without dead ends: 158868 [2018-10-24 16:26:25,734 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:25,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158868 states. [2018-10-24 16:26:28,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158868 to 150956. [2018-10-24 16:26:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150956 states. [2018-10-24 16:26:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150956 states to 150956 states and 166178 transitions. [2018-10-24 16:26:28,303 INFO L78 Accepts]: Start accepts. Automaton has 150956 states and 166178 transitions. Word has length 449 [2018-10-24 16:26:28,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:28,304 INFO L481 AbstractCegarLoop]: Abstraction has 150956 states and 166178 transitions. [2018-10-24 16:26:28,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:26:28,304 INFO L276 IsEmpty]: Start isEmpty. Operand 150956 states and 166178 transitions. [2018-10-24 16:26:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-10-24 16:26:28,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:28,315 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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] [2018-10-24 16:26:28,315 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:28,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:28,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1779461997, now seen corresponding path program 1 times [2018-10-24 16:26:28,316 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:28,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:28,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:28,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:28,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 499 proven. 5 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2018-10-24 16:26:28,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:26:28,761 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:26:28,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:28,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:26:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 499 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2018-10-24 16:26:29,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:26:29,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:26:29,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:26:29,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:26:29,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:26:29,138 INFO L87 Difference]: Start difference. First operand 150956 states and 166178 transitions. Second operand 5 states. [2018-10-24 16:26:42,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:42,604 INFO L93 Difference]: Finished difference Result 297952 states and 328034 transitions. [2018-10-24 16:26:42,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:26:42,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 483 [2018-10-24 16:26:42,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:42,771 INFO L225 Difference]: With dead ends: 297952 [2018-10-24 16:26:42,771 INFO L226 Difference]: Without dead ends: 147786 [2018-10-24 16:26:42,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 484 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:26:42,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147786 states. [2018-10-24 16:26:45,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147786 to 143838. [2018-10-24 16:26:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143838 states. [2018-10-24 16:26:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143838 states to 143838 states and 154430 transitions. [2018-10-24 16:26:45,604 INFO L78 Accepts]: Start accepts. Automaton has 143838 states and 154430 transitions. Word has length 483 [2018-10-24 16:26:45,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:45,605 INFO L481 AbstractCegarLoop]: Abstraction has 143838 states and 154430 transitions. [2018-10-24 16:26:45,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:26:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 143838 states and 154430 transitions. [2018-10-24 16:26:45,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-10-24 16:26:45,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:45,616 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:45,616 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:45,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:45,616 INFO L82 PathProgramCache]: Analyzing trace with hash -345715544, now seen corresponding path program 1 times [2018-10-24 16:26:45,617 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:45,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:45,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:45,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:45,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-24 16:26:46,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:26:46,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:26:46,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:26:46,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:26:46,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:26:46,073 INFO L87 Difference]: Start difference. First operand 143838 states and 154430 transitions. Second operand 3 states. [2018-10-24 16:26:51,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:51,156 INFO L93 Difference]: Finished difference Result 284502 states and 305355 transitions. [2018-10-24 16:26:51,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:26:51,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 535 [2018-10-24 16:26:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:51,338 INFO L225 Difference]: With dead ends: 284502 [2018-10-24 16:26:51,338 INFO L226 Difference]: Without dead ends: 141452 [2018-10-24 16:26:51,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:26:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141452 states. [2018-10-24 16:26:56,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141452 to 141451. [2018-10-24 16:26:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141451 states. [2018-10-24 16:26:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141451 states to 141451 states and 151697 transitions. [2018-10-24 16:26:57,023 INFO L78 Accepts]: Start accepts. Automaton has 141451 states and 151697 transitions. Word has length 535 [2018-10-24 16:26:57,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:57,023 INFO L481 AbstractCegarLoop]: Abstraction has 141451 states and 151697 transitions. [2018-10-24 16:26:57,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:26:57,023 INFO L276 IsEmpty]: Start isEmpty. Operand 141451 states and 151697 transitions. [2018-10-24 16:26:57,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-10-24 16:26:57,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:57,041 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:26:57,041 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:57,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:57,042 INFO L82 PathProgramCache]: Analyzing trace with hash -2022874378, now seen corresponding path program 1 times [2018-10-24 16:26:57,042 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:57,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:57,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:57,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:57,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 612 proven. 8 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-24 16:26:58,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:26:58,299 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:26:58,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:58,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:26:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-10-24 16:26:59,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:26:59,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:26:59,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:26:59,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:26:59,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:26:59,011 INFO L87 Difference]: Start difference. First operand 141451 states and 151697 transitions. Second operand 7 states. [2018-10-24 16:27:21,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:27:21,729 INFO L93 Difference]: Finished difference Result 375922 states and 402526 transitions. [2018-10-24 16:27:21,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 16:27:21,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 611 [2018-10-24 16:27:21,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:27:22,028 INFO L225 Difference]: With dead ends: 375922 [2018-10-24 16:27:22,029 INFO L226 Difference]: Without dead ends: 233681 [2018-10-24 16:27:22,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 617 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2018-10-24 16:27:22,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233681 states. [2018-10-24 16:27:24,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233681 to 196601. [2018-10-24 16:27:24,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196601 states. [2018-10-24 16:27:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196601 states to 196601 states and 207656 transitions. [2018-10-24 16:27:24,391 INFO L78 Accepts]: Start accepts. Automaton has 196601 states and 207656 transitions. Word has length 611 [2018-10-24 16:27:24,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:27:24,392 INFO L481 AbstractCegarLoop]: Abstraction has 196601 states and 207656 transitions. [2018-10-24 16:27:24,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:27:24,392 INFO L276 IsEmpty]: Start isEmpty. Operand 196601 states and 207656 transitions. [2018-10-24 16:27:24,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2018-10-24 16:27:24,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:27:24,410 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, 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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:27:24,411 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:27:24,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:27:24,411 INFO L82 PathProgramCache]: Analyzing trace with hash 246241674, now seen corresponding path program 1 times [2018-10-24 16:27:24,411 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:27:24,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:27:24,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:24,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:27:24,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:27:25,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 665 proven. 0 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked. [2018-10-24 16:27:25,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:27:25,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:27:25,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:27:25,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:27:25,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:27:25,699 INFO L87 Difference]: Start difference. First operand 196601 states and 207656 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 16:27:33,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:27:33,393 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:27:33,399 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:27:33,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:27:33 BoogieIcfgContainer [2018-10-24 16:27:33,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:27:33,400 INFO L168 Benchmark]: Toolchain (without parser) took 232291.08 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 16:27:33,402 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:27:33,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2375.88 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:27:33,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 805.16 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:27:33,404 INFO L168 Benchmark]: Boogie Preprocessor took 426.40 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 73.5 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:27:33,404 INFO L168 Benchmark]: RCFGBuilder took 15714.05 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 239.6 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 40.2 MB). Peak memory consumption was 583.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:27:33,406 INFO L168 Benchmark]: TraceAbstraction took 212963.72 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -852.2 MB). Peak memory consumption was 929.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:27:33,411 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2375.88 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 805.16 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 426.40 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 73.5 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15714.05 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 239.6 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 40.2 MB). Peak memory consumption was 583.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212963.72 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -852.2 MB). Peak memory consumption was 929.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 144). Cancelled while BasicCegarLoop was constructing difference of abstraction (196601states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (172850 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 212.8s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 183.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12348 SDtfs, 46964 SDslu, 3150 SDs, 0 SdLazy, 65437 SolverSat, 17506 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 152.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1547 GetRequests, 1499 SyntacticMatches, 9 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196601occurred 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: 18.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 84915 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 6172 NumberOfCodeBlocks, 6172 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6155 ConstructedInterpolants, 0 QuantifiedInterpolants, 7679911 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1980 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 8083/8138 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown