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_label43_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:16:21,307 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:16:21,309 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:16:21,321 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:16:21,322 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:16:21,323 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:16:21,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:16:21,326 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:16:21,328 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:16:21,329 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:16:21,330 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:16:21,330 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:16:21,331 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:16:21,332 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:16:21,333 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:16:21,334 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:16:21,335 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:16:21,337 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:16:21,339 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:16:21,341 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:16:21,342 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:16:21,344 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:16:21,346 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:16:21,347 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:16:21,347 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:16:21,348 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:16:21,349 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:16:21,350 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:16:21,351 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:16:21,352 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:16:21,352 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:16:21,353 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:16:21,356 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:16:21,381 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:16:21,381 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:16:21,384 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:16:21,384 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:16:21,387 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:16:21,387 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:16:21,388 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:16:21,389 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:16:21,389 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:16:21,389 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:16:21,389 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:16:21,389 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:16:21,390 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:16:21,390 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:16:21,390 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:16:21,390 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:16:21,390 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:16:21,391 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:16:21,392 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:16:21,392 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:16:21,392 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:16:21,392 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:16:21,393 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:16:21,393 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:16:21,393 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:16:21,394 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:16:21,394 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:16:21,394 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:16:21,458 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:16:21,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:16:21,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:16:21,480 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:16:21,480 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:16:21,481 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label43_false-unreach-call.c [2018-10-26 19:16:21,549 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6392e8d93/71a43fe64d9948ffbdc37cc27f096476/FLAG13ff7c8a0 [2018-10-26 19:16:22,424 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:16:22,425 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label43_false-unreach-call.c [2018-10-26 19:16:22,466 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6392e8d93/71a43fe64d9948ffbdc37cc27f096476/FLAG13ff7c8a0 [2018-10-26 19:16:22,491 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6392e8d93/71a43fe64d9948ffbdc37cc27f096476 [2018-10-26 19:16:22,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:16:22,508 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:16:22,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:16:22,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:16:22,516 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:16:22,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:16:22" (1/1) ... [2018-10-26 19:16:22,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e86a12f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:22, skipping insertion in model container [2018-10-26 19:16:22,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:16:22" (1/1) ... [2018-10-26 19:16:22,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:16:22,736 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:16:24,212 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:16:24,217 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:16:24,987 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:16:25,028 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:16:25,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:25 WrapperNode [2018-10-26 19:16:25,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:16:25,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:16:25,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:16:25,030 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:16:25,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:25" (1/1) ... [2018-10-26 19:16:25,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:25" (1/1) ... [2018-10-26 19:16:25,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:16:25,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:16:25,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:16:25,944 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:16:25,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:25" (1/1) ... [2018-10-26 19:16:25,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:25" (1/1) ... [2018-10-26 19:16:26,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:25" (1/1) ... [2018-10-26 19:16:26,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:25" (1/1) ... [2018-10-26 19:16:26,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:25" (1/1) ... [2018-10-26 19:16:26,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:25" (1/1) ... [2018-10-26 19:16:26,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:25" (1/1) ... [2018-10-26 19:16:26,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:16:26,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:16:26,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:16:26,412 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:16:26,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:16:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:16:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:16:26,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:16:44,644 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:16:44,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:16:44 BoogieIcfgContainer [2018-10-26 19:16:44,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:16:44,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:16:44,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:16:44,650 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:16:44,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:16:22" (1/3) ... [2018-10-26 19:16:44,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f66ee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:16:44, skipping insertion in model container [2018-10-26 19:16:44,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:25" (2/3) ... [2018-10-26 19:16:44,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f66ee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:16:44, skipping insertion in model container [2018-10-26 19:16:44,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:16:44" (3/3) ... [2018-10-26 19:16:44,655 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label43_false-unreach-call.c [2018-10-26 19:16:44,666 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:16:44,679 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:16:44,699 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:16:44,760 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:16:44,761 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:16:44,761 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:16:44,761 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:16:44,761 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:16:44,761 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:16:44,761 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:16:44,762 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:16:44,762 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:16:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 19:16:44,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-26 19:16:44,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:16:44,819 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:16:44,823 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:16:44,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:16:44,830 INFO L82 PathProgramCache]: Analyzing trace with hash -686802918, now seen corresponding path program 1 times [2018-10-26 19:16:44,832 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:16:44,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:16:44,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:44,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:44,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:16:45,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:16:45,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:16:45,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:16:45,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:16:45,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:16:45,314 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-26 19:17:01,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:17:01,754 INFO L93 Difference]: Finished difference Result 3863 states and 7261 transitions. [2018-10-26 19:17:01,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:17:01,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-10-26 19:17:01,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:17:01,806 INFO L225 Difference]: With dead ends: 3863 [2018-10-26 19:17:01,806 INFO L226 Difference]: Without dead ends: 2757 [2018-10-26 19:17:01,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:17:01,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-10-26 19:17:01,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2736. [2018-10-26 19:17:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-10-26 19:17:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4486 transitions. [2018-10-26 19:17:01,976 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4486 transitions. Word has length 19 [2018-10-26 19:17:01,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:17:01,978 INFO L481 AbstractCegarLoop]: Abstraction has 2736 states and 4486 transitions. [2018-10-26 19:17:01,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:17:01,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4486 transitions. [2018-10-26 19:17:01,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-26 19:17:01,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:17:01,986 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:17:01,989 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:17:01,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:17:01,990 INFO L82 PathProgramCache]: Analyzing trace with hash -689790280, now seen corresponding path program 1 times [2018-10-26 19:17:01,990 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:17:01,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:17:01,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:01,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:17:01,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:17:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:17:02,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:17:02,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:17:02,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:17:02,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:17:02,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:17:02,268 INFO L87 Difference]: Start difference. First operand 2736 states and 4486 transitions. Second operand 4 states. [2018-10-26 19:17:17,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:17:17,782 INFO L93 Difference]: Finished difference Result 10269 states and 17048 transitions. [2018-10-26 19:17:17,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:17:17,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-26 19:17:17,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:17:17,824 INFO L225 Difference]: With dead ends: 10269 [2018-10-26 19:17:17,824 INFO L226 Difference]: Without dead ends: 7535 [2018-10-26 19:17:17,831 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 [2018-10-26 19:17:17,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2018-10-26 19:17:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 7527. [2018-10-26 19:17:17,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7527 states. [2018-10-26 19:17:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7527 states to 7527 states and 11327 transitions. [2018-10-26 19:17:17,974 INFO L78 Accepts]: Start accepts. Automaton has 7527 states and 11327 transitions. Word has length 106 [2018-10-26 19:17:17,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:17:17,975 INFO L481 AbstractCegarLoop]: Abstraction has 7527 states and 11327 transitions. [2018-10-26 19:17:17,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:17:17,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7527 states and 11327 transitions. [2018-10-26 19:17:17,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-26 19:17:17,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:17:17,979 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:17:17,980 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:17:17,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:17:17,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1500021945, now seen corresponding path program 1 times [2018-10-26 19:17:17,980 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:17:17,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:17:17,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:17,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:17:17,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:17:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:17:18,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:17:18,432 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:17:18,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:17:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:17:18,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:17:18,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-26 19:17:18,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:17:18,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-26 19:17:18,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:17:18,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:17:18,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:17:18,663 INFO L87 Difference]: Start difference. First operand 7527 states and 11327 transitions. Second operand 6 states. [2018-10-26 19:17:51,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:17:51,990 INFO L93 Difference]: Finished difference Result 65291 states and 99022 transitions. [2018-10-26 19:17:51,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:17:51,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-10-26 19:17:51,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:17:52,159 INFO L225 Difference]: With dead ends: 65291 [2018-10-26 19:17:52,159 INFO L226 Difference]: Without dead ends: 57766 [2018-10-26 19:17:52,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:17:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57766 states. [2018-10-26 19:17:53,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57766 to 57478. [2018-10-26 19:17:53,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57478 states. [2018-10-26 19:17:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57478 states to 57478 states and 76550 transitions. [2018-10-26 19:17:53,195 INFO L78 Accepts]: Start accepts. Automaton has 57478 states and 76550 transitions. Word has length 116 [2018-10-26 19:17:53,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:17:53,196 INFO L481 AbstractCegarLoop]: Abstraction has 57478 states and 76550 transitions. [2018-10-26 19:17:53,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:17:53,197 INFO L276 IsEmpty]: Start isEmpty. Operand 57478 states and 76550 transitions. [2018-10-26 19:17:53,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-10-26 19:17:53,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:17:53,219 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:17:53,220 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:17:53,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:17:53,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1532722693, now seen corresponding path program 1 times [2018-10-26 19:17:53,221 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:17:53,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:17:53,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:53,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:17:53,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:17:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-26 19:17:53,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:17:53,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:17:53,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:17:53,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:17:53,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:17:53,699 INFO L87 Difference]: Start difference. First operand 57478 states and 76550 transitions. Second operand 4 states. [2018-10-26 19:18:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:08,855 INFO L93 Difference]: Finished difference Result 186014 states and 248155 transitions. [2018-10-26 19:18:08,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:18:08,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 280 [2018-10-26 19:18:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:09,089 INFO L225 Difference]: With dead ends: 186014 [2018-10-26 19:18:09,089 INFO L226 Difference]: Without dead ends: 128538 [2018-10-26 19:18:09,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:18:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128538 states. [2018-10-26 19:18:10,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128538 to 92936. [2018-10-26 19:18:10,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92936 states. [2018-10-26 19:18:10,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92936 states to 92936 states and 118548 transitions. [2018-10-26 19:18:10,597 INFO L78 Accepts]: Start accepts. Automaton has 92936 states and 118548 transitions. Word has length 280 [2018-10-26 19:18:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:10,597 INFO L481 AbstractCegarLoop]: Abstraction has 92936 states and 118548 transitions. [2018-10-26 19:18:10,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:18:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 92936 states and 118548 transitions. [2018-10-26 19:18:10,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-26 19:18:10,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:10,629 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:18:10,629 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:10,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:10,629 INFO L82 PathProgramCache]: Analyzing trace with hash 386555990, now seen corresponding path program 1 times [2018-10-26 19:18:10,630 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:18:10,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:18:10,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:10,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:10,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-26 19:18:10,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:18:10,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 19:18:10,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:18:10,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:18:10,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:18:10,984 INFO L87 Difference]: Start difference. First operand 92936 states and 118548 transitions. Second operand 3 states. [2018-10-26 19:18:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:18,540 INFO L93 Difference]: Finished difference Result 247320 states and 315873 transitions. [2018-10-26 19:18:18,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:18:18,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 364 [2018-10-26 19:18:18,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:18,841 INFO L225 Difference]: With dead ends: 247320 [2018-10-26 19:18:18,842 INFO L226 Difference]: Without dead ends: 155174 [2018-10-26 19:18:18,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:18:19,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155174 states. [2018-10-26 19:18:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155174 to 155159. [2018-10-26 19:18:21,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155159 states. [2018-10-26 19:18:21,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155159 states to 155159 states and 184823 transitions. [2018-10-26 19:18:21,558 INFO L78 Accepts]: Start accepts. Automaton has 155159 states and 184823 transitions. Word has length 364 [2018-10-26 19:18:21,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:21,559 INFO L481 AbstractCegarLoop]: Abstraction has 155159 states and 184823 transitions. [2018-10-26 19:18:21,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:18:21,559 INFO L276 IsEmpty]: Start isEmpty. Operand 155159 states and 184823 transitions. [2018-10-26 19:18:21,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-26 19:18:21,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:21,592 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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] [2018-10-26 19:18:21,592 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:21,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:21,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1902467750, now seen corresponding path program 1 times [2018-10-26 19:18:21,593 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:18:21,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:18:21,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:21,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:21,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:22,023 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-26 19:18:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-10-26 19:18:22,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:18:22,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:18:22,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:18:22,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:18:22,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:18:22,127 INFO L87 Difference]: Start difference. First operand 155159 states and 184823 transitions. Second operand 4 states. [2018-10-26 19:18:33,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:33,529 INFO L93 Difference]: Finished difference Result 364753 states and 431346 transitions. [2018-10-26 19:18:33,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:18:33,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 368 [2018-10-26 19:18:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:33,803 INFO L225 Difference]: With dead ends: 364753 [2018-10-26 19:18:33,804 INFO L226 Difference]: Without dead ends: 210384 [2018-10-26 19:18:33,892 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 [2018-10-26 19:18:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210384 states. [2018-10-26 19:18:35,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210384 to 187463. [2018-10-26 19:18:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187463 states. [2018-10-26 19:18:36,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187463 states to 187463 states and 219243 transitions. [2018-10-26 19:18:36,170 INFO L78 Accepts]: Start accepts. Automaton has 187463 states and 219243 transitions. Word has length 368 [2018-10-26 19:18:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:36,171 INFO L481 AbstractCegarLoop]: Abstraction has 187463 states and 219243 transitions. [2018-10-26 19:18:36,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:18:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 187463 states and 219243 transitions. [2018-10-26 19:18:36,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-26 19:18:36,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:36,198 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 19:18:36,198 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:36,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:36,198 INFO L82 PathProgramCache]: Analyzing trace with hash 347716093, now seen corresponding path program 1 times [2018-10-26 19:18:36,198 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:18:36,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:18:36,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:36,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:36,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:36,738 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-26 19:18:37,163 WARN L179 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 10 [2018-10-26 19:18:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-10-26 19:18:38,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:18:38,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:18:38,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:18:38,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:18:38,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:18:38,678 INFO L87 Difference]: Start difference. First operand 187463 states and 219243 transitions. Second operand 5 states. [2018-10-26 19:18:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:55,162 INFO L93 Difference]: Finished difference Result 391505 states and 456222 transitions. [2018-10-26 19:18:55,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:18:55,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 412 [2018-10-26 19:18:55,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:55,381 INFO L225 Difference]: With dead ends: 391505 [2018-10-26 19:18:55,381 INFO L226 Difference]: Without dead ends: 204832 [2018-10-26 19:18:55,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:18:55,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204832 states. [2018-10-26 19:18:58,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204832 to 204805. [2018-10-26 19:18:58,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204805 states. [2018-10-26 19:18:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204805 states to 204805 states and 237093 transitions. [2018-10-26 19:18:58,833 INFO L78 Accepts]: Start accepts. Automaton has 204805 states and 237093 transitions. Word has length 412 [2018-10-26 19:18:58,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:58,833 INFO L481 AbstractCegarLoop]: Abstraction has 204805 states and 237093 transitions. [2018-10-26 19:18:58,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:18:58,833 INFO L276 IsEmpty]: Start isEmpty. Operand 204805 states and 237093 transitions. [2018-10-26 19:18:58,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2018-10-26 19:18:58,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:58,861 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:18:58,861 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:58,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:58,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1819023425, now seen corresponding path program 1 times [2018-10-26 19:18:58,862 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:18:58,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:18:58,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:58,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:58,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-10-26 19:18:59,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:18:59,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:18:59,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:18:59,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:18:59,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:18:59,265 INFO L87 Difference]: Start difference. First operand 204805 states and 237093 transitions. Second operand 4 states. [2018-10-26 19:19:11,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:19:11,734 INFO L93 Difference]: Finished difference Result 460881 states and 536874 transitions. [2018-10-26 19:19:11,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:19:11,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 468 [2018-10-26 19:19:11,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:19:17,963 INFO L225 Difference]: With dead ends: 460881 [2018-10-26 19:19:17,963 INFO L226 Difference]: Without dead ends: 256866 [2018-10-26 19:19:18,041 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 [2018-10-26 19:19:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256866 states. [2018-10-26 19:19:20,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256866 to 245760. [2018-10-26 19:19:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245760 states. [2018-10-26 19:19:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245760 states to 245760 states and 276262 transitions. [2018-10-26 19:19:20,606 INFO L78 Accepts]: Start accepts. Automaton has 245760 states and 276262 transitions. Word has length 468 [2018-10-26 19:19:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:19:20,607 INFO L481 AbstractCegarLoop]: Abstraction has 245760 states and 276262 transitions. [2018-10-26 19:19:20,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:19:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 245760 states and 276262 transitions. [2018-10-26 19:19:20,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-10-26 19:19:20,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:19:20,628 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:19:20,629 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:19:20,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:19:20,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1054301306, now seen corresponding path program 1 times [2018-10-26 19:19:20,629 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:19:20,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:19:20,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:20,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:19:20,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:19:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-10-26 19:19:21,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:19:21,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:19:21,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:19:21,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:19:21,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:19:21,714 INFO L87 Difference]: Start difference. First operand 245760 states and 276262 transitions. Second operand 4 states. [2018-10-26 19:19:33,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:19:33,154 INFO L93 Difference]: Finished difference Result 533282 states and 597975 transitions. [2018-10-26 19:19:33,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:19:33,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 494 [2018-10-26 19:19:33,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:19:33,947 INFO L225 Difference]: With dead ends: 533282 [2018-10-26 19:19:33,947 INFO L226 Difference]: Without dead ends: 250391 [2018-10-26 19:19:34,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:19:34,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250391 states. [2018-10-26 19:19:36,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250391 to 240930. [2018-10-26 19:19:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240930 states. [2018-10-26 19:19:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240930 states to 240930 states and 265392 transitions. [2018-10-26 19:19:36,767 INFO L78 Accepts]: Start accepts. Automaton has 240930 states and 265392 transitions. Word has length 494 [2018-10-26 19:19:36,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:19:36,768 INFO L481 AbstractCegarLoop]: Abstraction has 240930 states and 265392 transitions. [2018-10-26 19:19:36,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:19:36,768 INFO L276 IsEmpty]: Start isEmpty. Operand 240930 states and 265392 transitions. [2018-10-26 19:19:36,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-10-26 19:19:36,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:19:36,779 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:19:36,780 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:19:36,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:19:36,780 INFO L82 PathProgramCache]: Analyzing trace with hash 31785022, now seen corresponding path program 1 times [2018-10-26 19:19:36,780 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:19:36,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:19:36,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:36,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:19:36,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:19:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-26 19:19:37,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:19:37,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:19:37,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:19:37,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:19:37,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:19:37,974 INFO L87 Difference]: Start difference. First operand 240930 states and 265392 transitions. Second operand 3 states. [2018-10-26 19:19:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:19:46,135 INFO L93 Difference]: Finished difference Result 479490 states and 528377 transitions. [2018-10-26 19:19:46,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:19:46,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 509 [2018-10-26 19:19:46,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:19:46,420 INFO L225 Difference]: With dead ends: 479490 [2018-10-26 19:19:46,421 INFO L226 Difference]: Without dead ends: 239350 [2018-10-26 19:19:46,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:19:46,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239350 states. [2018-10-26 19:19:49,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239350 to 220419. [2018-10-26 19:19:49,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220419 states. [2018-10-26 19:19:49,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220419 states to 220419 states and 237301 transitions. [2018-10-26 19:19:49,200 INFO L78 Accepts]: Start accepts. Automaton has 220419 states and 237301 transitions. Word has length 509 [2018-10-26 19:19:49,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:19:49,201 INFO L481 AbstractCegarLoop]: Abstraction has 220419 states and 237301 transitions. [2018-10-26 19:19:49,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:19:49,201 INFO L276 IsEmpty]: Start isEmpty. Operand 220419 states and 237301 transitions. [2018-10-26 19:19:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2018-10-26 19:19:49,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:19:49,218 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:19:49,218 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:19:49,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:19:49,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1987938184, now seen corresponding path program 1 times [2018-10-26 19:19:49,219 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:19:49,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:19:49,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:49,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:19:49,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:19:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 753 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2018-10-26 19:19:49,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:19:49,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:19:49,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:19:49,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:19:49,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:19:49,981 INFO L87 Difference]: Start difference. First operand 220419 states and 237301 transitions. Second operand 4 states. [2018-10-26 19:20:01,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:20:01,698 INFO L93 Difference]: Finished difference Result 473957 states and 511242 transitions. [2018-10-26 19:20:01,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:20:01,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 635 [2018-10-26 19:20:01,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:20:01,973 INFO L225 Difference]: With dead ends: 473957 [2018-10-26 19:20:01,973 INFO L226 Difference]: Without dead ends: 254328 [2018-10-26 19:20:02,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:20:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254328 states. Received shutdown request... [2018-10-26 19:20:07,675 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:20:07,679 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:20:07,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:20:07 BoogieIcfgContainer [2018-10-26 19:20:07,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:20:07,680 INFO L168 Benchmark]: Toolchain (without parser) took 225173.00 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 4.2 GB in the end (delta: -2.8 GB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-10-26 19:20:07,681 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-26 19:20:07,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2520.32 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. [2018-10-26 19:20:07,682 INFO L168 Benchmark]: Boogie Procedure Inliner took 913.52 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 831.5 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. [2018-10-26 19:20:07,683 INFO L168 Benchmark]: Boogie Preprocessor took 467.58 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: 73.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:20:07,684 INFO L168 Benchmark]: RCFGBuilder took 18233.49 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 252.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -4.4 MB). Peak memory consumption was 621.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:20:07,685 INFO L168 Benchmark]: TraceAbstraction took 203032.82 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 4.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-10-26 19:20:07,692 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2520.32 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 913.52 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 831.5 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 467.58 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: 73.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18233.49 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 252.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -4.4 MB). Peak memory consumption was 621.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203032.82 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 4.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 66). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 202.9s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 169.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9076 SDtfs, 25646 SDslu, 3446 SDs, 0 SdLazy, 55666 SolverSat, 15459 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 129.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 130 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=245760occurred in iteration=8, 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: 24.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 98380 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 3887 NumberOfCodeBlocks, 3887 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3875 ConstructedInterpolants, 0 QuantifiedInterpolants, 3362504 SizeOfPredicates, 1 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 4019/4031 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown