java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label19_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:05:50,465 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:05:50,468 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:05:50,484 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:05:50,484 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:05:50,485 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:05:50,487 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:05:50,490 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:05:50,493 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:05:50,494 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:05:50,502 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:05:50,502 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:05:50,506 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:05:50,507 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:05:50,510 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:05:50,511 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:05:50,512 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:05:50,514 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:05:50,515 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:05:50,517 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:05:50,520 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:05:50,521 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:05:50,525 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:05:50,525 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:05:50,525 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:05:50,528 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:05:50,530 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:05:50,530 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:05:50,531 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:05:50,535 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:05:50,536 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:05:50,537 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:05:50,541 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 19:05:50,566 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:05:50,566 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:05:50,568 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:05:50,568 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:05:50,569 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:05:50,571 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:05:50,571 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:05:50,572 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:05:50,572 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:05:50,572 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:05:50,572 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:05:50,573 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:05:50,573 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:05:50,573 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:05:50,573 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:05:50,573 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:05:50,575 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:05:50,575 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:05:50,575 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:05:50,576 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:05:50,576 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:05:50,576 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:05:50,576 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:05:50,577 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:05:50,577 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:05:50,577 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:05:50,578 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:05:50,578 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:05:50,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:05:50,656 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:05:50,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:05:50,662 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:05:50,662 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:05:50,663 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label19_false-unreach-call.c [2018-10-26 19:05:50,727 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d3ab0fd9/47bd064bd0884eeba97cb62195bb9b70/FLAG3ab84d106 [2018-10-26 19:05:51,529 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:05:51,530 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label19_false-unreach-call.c [2018-10-26 19:05:51,562 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d3ab0fd9/47bd064bd0884eeba97cb62195bb9b70/FLAG3ab84d106 [2018-10-26 19:05:51,581 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d3ab0fd9/47bd064bd0884eeba97cb62195bb9b70 [2018-10-26 19:05:51,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:05:51,597 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:05:51,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:05:51,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:05:51,603 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:05:51,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:05:51" (1/1) ... [2018-10-26 19:05:51,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708368ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:51, skipping insertion in model container [2018-10-26 19:05:51,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:05:51" (1/1) ... [2018-10-26 19:05:51,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:05:51,792 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:05:53,038 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:05:53,043 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:05:53,659 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:05:53,696 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:05:53,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:53 WrapperNode [2018-10-26 19:05:53,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:05:53,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:05:53,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:05:53,699 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:05:53,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:53" (1/1) ... [2018-10-26 19:05:53,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:53" (1/1) ... [2018-10-26 19:05:54,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:05:54,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:05:54,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:05:54,386 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:05:54,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:53" (1/1) ... [2018-10-26 19:05:54,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:53" (1/1) ... [2018-10-26 19:05:54,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:53" (1/1) ... [2018-10-26 19:05:54,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:53" (1/1) ... [2018-10-26 19:05:54,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:53" (1/1) ... [2018-10-26 19:05:54,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:53" (1/1) ... [2018-10-26 19:05:54,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:53" (1/1) ... [2018-10-26 19:05:54,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:05:54,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:05:54,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:05:54,844 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:05:54,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:53" (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 19:05:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:05:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:05:54,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:06:04,505 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:06:04,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:06:04 BoogieIcfgContainer [2018-10-26 19:06:04,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:06:04,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:06:04,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:06:04,512 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:06:04,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:05:51" (1/3) ... [2018-10-26 19:06:04,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52264f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:06:04, skipping insertion in model container [2018-10-26 19:06:04,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:53" (2/3) ... [2018-10-26 19:06:04,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52264f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:06:04, skipping insertion in model container [2018-10-26 19:06:04,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:06:04" (3/3) ... [2018-10-26 19:06:04,517 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label19_false-unreach-call.c [2018-10-26 19:06:04,527 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:06:04,537 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:06:04,555 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:06:04,607 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:06:04,608 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:06:04,608 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:06:04,608 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:06:04,608 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:06:04,608 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:06:04,608 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:06:04,609 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:06:04,609 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:06:04,656 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-26 19:06:04,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 19:06:04,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:04,665 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:06:04,667 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:04,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:04,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1961166346, now seen corresponding path program 1 times [2018-10-26 19:06:04,674 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:04,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:04,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:04,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:04,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:05,055 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 19:06:05,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:06:05,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:06:05,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:06:05,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:06:05,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:05,084 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-26 19:06:18,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:18,964 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-26 19:06:18,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:06:18,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-26 19:06:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:19,005 INFO L225 Difference]: With dead ends: 3146 [2018-10-26 19:06:19,005 INFO L226 Difference]: Without dead ends: 2320 [2018-10-26 19:06:19,013 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 19:06:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-26 19:06:19,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-26 19:06:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-26 19:06:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-10-26 19:06:19,173 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 15 [2018-10-26 19:06:19,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:19,173 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-10-26 19:06:19,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:06:19,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-10-26 19:06:19,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-26 19:06:19,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:19,178 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:06:19,178 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:19,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:19,178 INFO L82 PathProgramCache]: Analyzing trace with hash -373120294, now seen corresponding path program 1 times [2018-10-26 19:06:19,179 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:19,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:19,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:19,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:19,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:19,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:06:19,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:06:19,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:06:19,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:06:19,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:19,441 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 4 states. [2018-10-26 19:06:33,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:33,035 INFO L93 Difference]: Finished difference Result 9150 states and 15304 transitions. [2018-10-26 19:06:33,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:06:33,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-10-26 19:06:33,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:33,071 INFO L225 Difference]: With dead ends: 9150 [2018-10-26 19:06:33,072 INFO L226 Difference]: Without dead ends: 6832 [2018-10-26 19:06:33,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:33,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-26 19:06:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-26 19:06:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-26 19:06:33,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 10776 transitions. [2018-10-26 19:06:33,203 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 10776 transitions. Word has length 87 [2018-10-26 19:06:33,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:33,204 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 10776 transitions. [2018-10-26 19:06:33,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:06:33,204 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 10776 transitions. [2018-10-26 19:06:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-26 19:06:33,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:33,215 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:06:33,215 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:33,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:33,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1497999273, now seen corresponding path program 1 times [2018-10-26 19:06:33,216 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:33,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:33,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:33,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:33,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:33,587 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:06:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:33,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:06:33,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:06:33,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:06:33,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:06:33,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:06:33,824 INFO L87 Difference]: Start difference. First operand 6832 states and 10776 transitions. Second operand 6 states. [2018-10-26 19:06:49,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:49,994 INFO L93 Difference]: Finished difference Result 15918 states and 24201 transitions. [2018-10-26 19:06:49,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:06:49,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-26 19:06:49,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:50,038 INFO L225 Difference]: With dead ends: 15918 [2018-10-26 19:06:50,038 INFO L226 Difference]: Without dead ends: 9088 [2018-10-26 19:06:50,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:06:50,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9088 states. [2018-10-26 19:06:50,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9088 to 9088. [2018-10-26 19:06:50,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9088 states. [2018-10-26 19:06:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9088 states to 9088 states and 12817 transitions. [2018-10-26 19:06:50,222 INFO L78 Accepts]: Start accepts. Automaton has 9088 states and 12817 transitions. Word has length 93 [2018-10-26 19:06:50,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:50,223 INFO L481 AbstractCegarLoop]: Abstraction has 9088 states and 12817 transitions. [2018-10-26 19:06:50,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:06:50,223 INFO L276 IsEmpty]: Start isEmpty. Operand 9088 states and 12817 transitions. [2018-10-26 19:06:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-26 19:06:50,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:50,235 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:06:50,235 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:50,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:50,236 INFO L82 PathProgramCache]: Analyzing trace with hash -629270407, now seen corresponding path program 1 times [2018-10-26 19:06:50,238 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:50,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:50,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:50,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:50,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 91 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:50,740 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:06:50,740 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 19:06:50,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:50,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:06:50,964 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:51,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:06:51,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 19:06:51,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:06:51,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:06:51,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:06:51,158 INFO L87 Difference]: Start difference. First operand 9088 states and 12817 transitions. Second operand 7 states. [2018-10-26 19:07:12,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:12,430 INFO L93 Difference]: Finished difference Result 48282 states and 70811 transitions. [2018-10-26 19:07:12,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:07:12,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2018-10-26 19:07:12,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:12,536 INFO L225 Difference]: With dead ends: 48282 [2018-10-26 19:07:12,536 INFO L226 Difference]: Without dead ends: 37689 [2018-10-26 19:07:12,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:07:12,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37689 states. [2018-10-26 19:07:13,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37689 to 22623. [2018-10-26 19:07:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22623 states. [2018-10-26 19:07:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22623 states to 22623 states and 27521 transitions. [2018-10-26 19:07:13,121 INFO L78 Accepts]: Start accepts. Automaton has 22623 states and 27521 transitions. Word has length 165 [2018-10-26 19:07:13,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:13,121 INFO L481 AbstractCegarLoop]: Abstraction has 22623 states and 27521 transitions. [2018-10-26 19:07:13,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:07:13,122 INFO L276 IsEmpty]: Start isEmpty. Operand 22623 states and 27521 transitions. [2018-10-26 19:07:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-10-26 19:07:13,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:13,135 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 19:07:13,135 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:13,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:13,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1816142010, now seen corresponding path program 1 times [2018-10-26 19:07:13,136 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:13,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:13,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:13,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:13,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-26 19:07:13,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:13,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:07:13,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:07:13,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:07:13,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:07:13,795 INFO L87 Difference]: Start difference. First operand 22623 states and 27521 transitions. Second operand 3 states. [2018-10-26 19:07:18,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:18,214 INFO L93 Difference]: Finished difference Result 51260 states and 63098 transitions. [2018-10-26 19:07:18,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:07:18,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 399 [2018-10-26 19:07:18,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:18,277 INFO L225 Difference]: With dead ends: 51260 [2018-10-26 19:07:18,278 INFO L226 Difference]: Without dead ends: 29391 [2018-10-26 19:07:18,309 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:07:18,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29391 states. [2018-10-26 19:07:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29391 to 28639. [2018-10-26 19:07:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28639 states. [2018-10-26 19:07:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28639 states to 28639 states and 34132 transitions. [2018-10-26 19:07:18,723 INFO L78 Accepts]: Start accepts. Automaton has 28639 states and 34132 transitions. Word has length 399 [2018-10-26 19:07:18,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:18,724 INFO L481 AbstractCegarLoop]: Abstraction has 28639 states and 34132 transitions. [2018-10-26 19:07:18,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:07:18,727 INFO L276 IsEmpty]: Start isEmpty. Operand 28639 states and 34132 transitions. [2018-10-26 19:07:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-10-26 19:07:18,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:18,742 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:07:18,742 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:18,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:18,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1157546942, now seen corresponding path program 1 times [2018-10-26 19:07:18,743 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:18,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:18,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:18,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:18,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 425 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-26 19:07:19,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:19,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:07:19,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:07:19,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:07:19,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:07:19,289 INFO L87 Difference]: Start difference. First operand 28639 states and 34132 transitions. Second operand 4 states. [2018-10-26 19:07:27,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:27,771 INFO L93 Difference]: Finished difference Result 99388 states and 118651 transitions. [2018-10-26 19:07:27,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:07:27,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 405 [2018-10-26 19:07:27,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:27,922 INFO L225 Difference]: With dead ends: 99388 [2018-10-26 19:07:27,922 INFO L226 Difference]: Without dead ends: 71503 [2018-10-26 19:07:27,959 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 19:07:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71503 states. [2018-10-26 19:07:28,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71503 to 70751. [2018-10-26 19:07:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70751 states. [2018-10-26 19:07:28,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70751 states to 70751 states and 79771 transitions. [2018-10-26 19:07:28,733 INFO L78 Accepts]: Start accepts. Automaton has 70751 states and 79771 transitions. Word has length 405 [2018-10-26 19:07:28,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:28,733 INFO L481 AbstractCegarLoop]: Abstraction has 70751 states and 79771 transitions. [2018-10-26 19:07:28,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:07:28,734 INFO L276 IsEmpty]: Start isEmpty. Operand 70751 states and 79771 transitions. [2018-10-26 19:07:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-10-26 19:07:28,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:28,756 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 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, 1, 1, 1, 1, 1, 1] [2018-10-26 19:07:28,757 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:28,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:28,757 INFO L82 PathProgramCache]: Analyzing trace with hash -480905004, now seen corresponding path program 1 times [2018-10-26 19:07:28,757 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:28,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:28,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:28,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:28,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-10-26 19:07:29,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:29,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:07:29,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:07:29,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:07:29,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:07:29,142 INFO L87 Difference]: Start difference. First operand 70751 states and 79771 transitions. Second operand 3 states. [2018-10-26 19:07:35,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:35,268 INFO L93 Difference]: Finished difference Result 182108 states and 206865 transitions. [2018-10-26 19:07:35,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:07:35,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 452 [2018-10-26 19:07:35,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:35,420 INFO L225 Difference]: With dead ends: 182108 [2018-10-26 19:07:35,420 INFO L226 Difference]: Without dead ends: 112111 [2018-10-26 19:07:35,470 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 [2018-10-26 19:07:35,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112111 states. [2018-10-26 19:07:36,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112111 to 109855. [2018-10-26 19:07:36,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109855 states. [2018-10-26 19:07:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109855 states to 109855 states and 121866 transitions. [2018-10-26 19:07:36,734 INFO L78 Accepts]: Start accepts. Automaton has 109855 states and 121866 transitions. Word has length 452 [2018-10-26 19:07:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:36,735 INFO L481 AbstractCegarLoop]: Abstraction has 109855 states and 121866 transitions. [2018-10-26 19:07:36,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:07:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 109855 states and 121866 transitions. [2018-10-26 19:07:36,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2018-10-26 19:07:36,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:36,763 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:36,763 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:36,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:36,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1812629239, now seen corresponding path program 1 times [2018-10-26 19:07:36,764 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:36,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:36,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:36,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:36,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2018-10-26 19:07:37,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:37,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:07:37,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:07:37,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:07:37,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:07:37,332 INFO L87 Difference]: Start difference. First operand 109855 states and 121866 transitions. Second operand 6 states. [2018-10-26 19:07:45,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:45,656 INFO L93 Difference]: Finished difference Result 219499 states and 243516 transitions. [2018-10-26 19:07:45,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:07:45,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 489 [2018-10-26 19:07:45,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:45,779 INFO L225 Difference]: With dead ends: 219499 [2018-10-26 19:07:45,779 INFO L226 Difference]: Without dead ends: 92319 [2018-10-26 19:07:45,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:07:45,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92319 states. [2018-10-26 19:07:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92319 to 87264. [2018-10-26 19:07:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87264 states. [2018-10-26 19:07:46,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87264 states to 87264 states and 92509 transitions. [2018-10-26 19:07:46,920 INFO L78 Accepts]: Start accepts. Automaton has 87264 states and 92509 transitions. Word has length 489 [2018-10-26 19:07:46,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:46,921 INFO L481 AbstractCegarLoop]: Abstraction has 87264 states and 92509 transitions. [2018-10-26 19:07:46,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:07:46,921 INFO L276 IsEmpty]: Start isEmpty. Operand 87264 states and 92509 transitions. [2018-10-26 19:07:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-10-26 19:07:46,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:46,947 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:07:46,947 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:46,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:46,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1826194161, now seen corresponding path program 1 times [2018-10-26 19:07:46,948 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:46,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:46,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:46,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:46,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2018-10-26 19:07:47,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:47,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:07:47,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:07:47,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:07:47,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:07:47,404 INFO L87 Difference]: Start difference. First operand 87264 states and 92509 transitions. Second operand 3 states. [2018-10-26 19:07:53,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:53,254 INFO L93 Difference]: Finished difference Result 175278 states and 185963 transitions. [2018-10-26 19:07:53,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:07:53,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 506 [2018-10-26 19:07:53,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:53,354 INFO L225 Difference]: With dead ends: 175278 [2018-10-26 19:07:53,354 INFO L226 Difference]: Without dead ends: 88768 [2018-10-26 19:07:53,394 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 [2018-10-26 19:07:53,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88768 states. [2018-10-26 19:07:54,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88768 to 84256. [2018-10-26 19:07:54,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84256 states. [2018-10-26 19:07:54,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84256 states to 84256 states and 88737 transitions. [2018-10-26 19:07:54,124 INFO L78 Accepts]: Start accepts. Automaton has 84256 states and 88737 transitions. Word has length 506 [2018-10-26 19:07:54,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:54,125 INFO L481 AbstractCegarLoop]: Abstraction has 84256 states and 88737 transitions. [2018-10-26 19:07:54,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:07:54,126 INFO L276 IsEmpty]: Start isEmpty. Operand 84256 states and 88737 transitions. [2018-10-26 19:07:54,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-10-26 19:07:54,150 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:54,150 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:07:54,150 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:54,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:54,151 INFO L82 PathProgramCache]: Analyzing trace with hash 259889551, now seen corresponding path program 1 times [2018-10-26 19:07:54,151 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:54,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:54,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:54,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:54,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 593 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-26 19:07:54,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:54,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:07:54,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:07:54,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:07:54,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:07:54,583 INFO L87 Difference]: Start difference. First operand 84256 states and 88737 transitions. Second operand 4 states. [2018-10-26 19:08:01,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:08:01,532 INFO L93 Difference]: Finished difference Result 179790 states and 190361 transitions. [2018-10-26 19:08:01,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:08:01,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 586 [2018-10-26 19:08:01,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:08:01,625 INFO L225 Difference]: With dead ends: 179790 [2018-10-26 19:08:01,626 INFO L226 Difference]: Without dead ends: 96288 [2018-10-26 19:08:01,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 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 19:08:01,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96288 states. [2018-10-26 19:08:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96288 to 92528. [2018-10-26 19:08:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92528 states. [2018-10-26 19:08:02,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92528 states to 92528 states and 97141 transitions. [2018-10-26 19:08:02,518 INFO L78 Accepts]: Start accepts. Automaton has 92528 states and 97141 transitions. Word has length 586 [2018-10-26 19:08:02,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:08:02,519 INFO L481 AbstractCegarLoop]: Abstraction has 92528 states and 97141 transitions. [2018-10-26 19:08:02,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:08:02,520 INFO L276 IsEmpty]: Start isEmpty. Operand 92528 states and 97141 transitions. [2018-10-26 19:08:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2018-10-26 19:08:02,552 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:08:02,552 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:08:02,553 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:08:02,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:08:02,553 INFO L82 PathProgramCache]: Analyzing trace with hash -353722807, now seen corresponding path program 1 times [2018-10-26 19:08:02,553 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:08:02,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:08:02,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:02,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:02,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:03,171 WARN L179 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 19:08:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-10-26 19:08:03,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:08:03,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:08:03,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:08:03,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:08:03,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:08:03,505 INFO L87 Difference]: Start difference. First operand 92528 states and 97141 transitions. Second operand 4 states. [2018-10-26 19:08:09,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:08:09,773 INFO L93 Difference]: Finished difference Result 196334 states and 206078 transitions. [2018-10-26 19:08:09,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:08:09,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 661 [2018-10-26 19:08:09,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:08:09,878 INFO L225 Difference]: With dead ends: 196334 [2018-10-26 19:08:09,879 INFO L226 Difference]: Without dead ends: 104560 [2018-10-26 19:08:09,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:08:09,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104560 states. [2018-10-26 19:08:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104560 to 99296. [2018-10-26 19:08:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99296 states. [2018-10-26 19:08:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99296 states to 99296 states and 103930 transitions. [2018-10-26 19:08:11,172 INFO L78 Accepts]: Start accepts. Automaton has 99296 states and 103930 transitions. Word has length 661 [2018-10-26 19:08:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:08:11,173 INFO L481 AbstractCegarLoop]: Abstraction has 99296 states and 103930 transitions. [2018-10-26 19:08:11,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:08:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 99296 states and 103930 transitions. [2018-10-26 19:08:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2018-10-26 19:08:11,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:08:11,187 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:08:11,187 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:08:11,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:08:11,187 INFO L82 PathProgramCache]: Analyzing trace with hash 951502035, now seen corresponding path program 1 times [2018-10-26 19:08:11,188 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:08:11,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:08:11,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:11,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:11,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 593 proven. 262 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-26 19:08:12,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:08:12,460 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:08:12,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:12,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:08:13,186 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 517 DAG size of output: 24 [2018-10-26 19:08:38,646 WARN L179 SmtUtils]: Spent 25.08 s on a formula simplification. DAG size of input: 262 DAG size of output: 53 [2018-10-26 19:08:39,463 WARN L179 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2018-10-26 19:08:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 738 proven. 117 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-26 19:08:42,255 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:08:42,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2018-10-26 19:08:42,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 19:08:42,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 19:08:42,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-26 19:08:42,258 INFO L87 Difference]: Start difference. First operand 99296 states and 103930 transitions. Second operand 12 states. [2018-10-26 19:09:34,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:09:34,210 INFO L93 Difference]: Finished difference Result 267040 states and 279452 transitions. [2018-10-26 19:09:34,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-26 19:09:34,211 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 665 [2018-10-26 19:09:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:09:34,385 INFO L225 Difference]: With dead ends: 267040 [2018-10-26 19:09:34,385 INFO L226 Difference]: Without dead ends: 164731 [2018-10-26 19:09:34,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2018-10-26 19:09:34,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164731 states. [2018-10-26 19:09:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164731 to 154193. [2018-10-26 19:09:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154193 states. [2018-10-26 19:09:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154193 states to 154193 states and 159963 transitions. [2018-10-26 19:09:35,885 INFO L78 Accepts]: Start accepts. Automaton has 154193 states and 159963 transitions. Word has length 665 [2018-10-26 19:09:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:09:35,886 INFO L481 AbstractCegarLoop]: Abstraction has 154193 states and 159963 transitions. [2018-10-26 19:09:35,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 19:09:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 154193 states and 159963 transitions. [2018-10-26 19:09:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2018-10-26 19:09:35,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:35,908 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2018-10-26 19:09:35,909 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:35,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:35,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1217374838, now seen corresponding path program 1 times [2018-10-26 19:09:35,909 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:35,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:35,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:35,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:35,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:36,638 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-26 19:09:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 606 proven. 143 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-10-26 19:09:37,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:09:37,810 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:09:37,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:37,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:09:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 694 proven. 55 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-10-26 19:09:38,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:09:38,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-26 19:09:38,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 19:09:38,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 19:09:38,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:09:38,741 INFO L87 Difference]: Start difference. First operand 154193 states and 159963 transitions. Second operand 10 states. Received shutdown request... [2018-10-26 19:09:44,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 19:09:44,279 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:09:44,285 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:09:44,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:09:44 BoogieIcfgContainer [2018-10-26 19:09:44,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:09:44,286 INFO L168 Benchmark]: Toolchain (without parser) took 232691.12 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 943.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:09:44,287 INFO L168 Benchmark]: CDTParser took 0.23 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 19:09:44,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2100.42 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:09:44,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 686.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -975.8 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:09:44,290 INFO L168 Benchmark]: Boogie Preprocessor took 457.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:09:44,290 INFO L168 Benchmark]: RCFGBuilder took 9662.88 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 253.2 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -198.7 MB). Peak memory consumption was 653.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:09:44,291 INFO L168 Benchmark]: TraceAbstraction took 219777.60 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: -438.0 MB). Peak memory consumption was 842.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:09:44,297 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2100.42 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 686.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -975.8 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 457.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9662.88 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 253.2 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -198.7 MB). Peak memory consumption was 653.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219777.60 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: -438.0 MB). Peak memory consumption was 842.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (154193states) and FLOYD_HOARE automaton (currently 10 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (9383 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 219.6s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 170.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9531 SDtfs, 38968 SDslu, 1407 SDs, 0 SdLazy, 84013 SolverSat, 13105 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 141.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1611 GetRequests, 1535 SyntacticMatches, 11 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 29.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154193occurred 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: 8.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 47955 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 35.5s InterpolantComputationTime, 6737 NumberOfCodeBlocks, 6737 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6721 ConstructedInterpolants, 292 QuantifiedInterpolants, 24235047 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1906 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 7929/8511 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown