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_label08_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:05:13,764 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:05:13,766 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:05:13,782 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:05:13,782 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:05:13,783 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:05:13,784 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:05:13,786 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:05:13,787 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:05:13,788 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:05:13,789 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:05:13,790 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:05:13,790 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:05:13,792 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:05:13,793 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:05:13,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:05:13,794 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:05:13,796 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:05:13,798 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:05:13,800 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:05:13,804 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:05:13,806 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:05:13,810 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 19:05:13,824 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:05:13,824 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:05:13,827 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:05:13,828 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:05:13,829 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 19:05:13,855 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:05:13,855 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:05:13,856 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:05:13,856 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:05:13,856 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:05:13,857 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:05:13,857 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:05:13,857 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:05:13,857 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:05:13,858 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:05:13,858 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:05:13,858 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:05:13,858 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:05:13,858 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:05:13,858 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:05:13,859 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:05:13,859 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:05:13,859 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:05:13,859 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:05:13,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:05:13,860 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:05:13,860 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:05:13,860 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:05:13,860 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:05:13,860 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:05:13,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:05:13,861 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:05:13,861 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:05:13,920 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:05:13,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:05:13,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:05:13,941 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:05:13,941 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:05:13,942 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label08_false-unreach-call.c [2018-10-26 19:05:14,004 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bd911853f/90dede61667148efb90410a5feec3613/FLAGd88695aa7 [2018-10-26 19:05:14,714 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:05:14,715 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label08_false-unreach-call.c [2018-10-26 19:05:14,748 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bd911853f/90dede61667148efb90410a5feec3613/FLAGd88695aa7 [2018-10-26 19:05:14,774 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bd911853f/90dede61667148efb90410a5feec3613 [2018-10-26 19:05:14,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:05:14,789 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:05:14,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:05:14,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:05:14,795 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:05:14,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:05:14" (1/1) ... [2018-10-26 19:05:14,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f3d0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:14, skipping insertion in model container [2018-10-26 19:05:14,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:05:14" (1/1) ... [2018-10-26 19:05:14,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:05:14,984 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:05:16,337 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:05:16,342 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:05:16,935 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:05:16,970 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:05:16,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:16 WrapperNode [2018-10-26 19:05:16,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:05:16,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:05:16,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:05:16,972 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:05:16,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:16" (1/1) ... [2018-10-26 19:05:17,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:16" (1/1) ... [2018-10-26 19:05:17,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:05:17,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:05:17,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:05:17,586 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:05:17,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:16" (1/1) ... [2018-10-26 19:05:17,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:16" (1/1) ... [2018-10-26 19:05:17,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:16" (1/1) ... [2018-10-26 19:05:17,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:16" (1/1) ... [2018-10-26 19:05:17,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:16" (1/1) ... [2018-10-26 19:05:17,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:16" (1/1) ... [2018-10-26 19:05:17,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:16" (1/1) ... [2018-10-26 19:05:18,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:05:18,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:05:18,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:05:18,032 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:05:18,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:16" (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 19:05:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:05:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:05:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:05:26,509 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:05:26,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:05:26 BoogieIcfgContainer [2018-10-26 19:05:26,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:05:26,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:05:26,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:05:26,514 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:05:26,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:05:14" (1/3) ... [2018-10-26 19:05:26,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c55479e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:05:26, skipping insertion in model container [2018-10-26 19:05:26,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:05:16" (2/3) ... [2018-10-26 19:05:26,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c55479e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:05:26, skipping insertion in model container [2018-10-26 19:05:26,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:05:26" (3/3) ... [2018-10-26 19:05:26,519 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label08_false-unreach-call.c [2018-10-26 19:05:26,529 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:05:26,539 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:05:26,557 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:05:26,598 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:05:26,599 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:05:26,600 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:05:26,600 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:05:26,600 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:05:26,600 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:05:26,600 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:05:26,600 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:05:26,601 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:05:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-26 19:05:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-26 19:05:26,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:05:26,653 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:05:26,657 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:05:26,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:05:26,664 INFO L82 PathProgramCache]: Analyzing trace with hash 808956810, now seen corresponding path program 1 times [2018-10-26 19:05:26,666 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:05:26,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:05:26,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:26,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:26,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:27,062 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 19:05:27,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:05:27,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:05:27,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:05:27,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:05:27,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:05:27,095 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-26 19:05:40,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:05:40,608 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-26 19:05:40,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:05:40,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-26 19:05:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:05:40,652 INFO L225 Difference]: With dead ends: 3146 [2018-10-26 19:05:40,652 INFO L226 Difference]: Without dead ends: 2320 [2018-10-26 19:05:40,661 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 19:05:40,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-26 19:05:40,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-26 19:05:40,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-26 19:05:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4222 transitions. [2018-10-26 19:05:40,813 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4222 transitions. Word has length 30 [2018-10-26 19:05:40,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:05:40,814 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 4222 transitions. [2018-10-26 19:05:40,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:05:40,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4222 transitions. [2018-10-26 19:05:40,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-26 19:05:40,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:05:40,819 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:40,820 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:05:40,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:05:40,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1843346744, now seen corresponding path program 1 times [2018-10-26 19:05:40,820 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:05:40,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:05:40,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:40,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:40,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:41,422 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-26 19:05:41,830 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-10-26 19:05:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:05:41,897 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:05:41,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:05:41,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:05:41,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:05:41,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:05:41,899 INFO L87 Difference]: Start difference. First operand 2320 states and 4222 transitions. Second operand 7 states. [2018-10-26 19:06:02,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:02,741 INFO L93 Difference]: Finished difference Result 9904 states and 17611 transitions. [2018-10-26 19:06:02,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:06:02,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2018-10-26 19:06:02,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:02,787 INFO L225 Difference]: With dead ends: 9904 [2018-10-26 19:06:02,788 INFO L226 Difference]: Without dead ends: 7586 [2018-10-26 19:06:02,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:06:02,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2018-10-26 19:06:02,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 6080. [2018-10-26 19:06:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6080 states. [2018-10-26 19:06:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 9384 transitions. [2018-10-26 19:06:02,925 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 9384 transitions. Word has length 96 [2018-10-26 19:06:02,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:02,926 INFO L481 AbstractCegarLoop]: Abstraction has 6080 states and 9384 transitions. [2018-10-26 19:06:02,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:06:02,927 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 9384 transitions. [2018-10-26 19:06:02,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-26 19:06:02,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:02,931 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:02,931 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:02,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:02,932 INFO L82 PathProgramCache]: Analyzing trace with hash -995895591, now seen corresponding path program 1 times [2018-10-26 19:06:02,932 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:02,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:02,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:02,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:02,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-10-26 19:06:03,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:06:03,305 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 19:06:03,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:03,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:06:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:03,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:06:03,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 19:06:03,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:06:03,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:06:03,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:06:03,575 INFO L87 Difference]: Start difference. First operand 6080 states and 9384 transitions. Second operand 5 states. [2018-10-26 19:06:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:18,889 INFO L93 Difference]: Finished difference Result 27214 states and 43707 transitions. [2018-10-26 19:06:18,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:06:18,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2018-10-26 19:06:18,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:18,976 INFO L225 Difference]: With dead ends: 27214 [2018-10-26 19:06:18,976 INFO L226 Difference]: Without dead ends: 21136 [2018-10-26 19:06:18,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:06:19,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21136 states. [2018-10-26 19:06:19,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21136 to 15104. [2018-10-26 19:06:19,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15104 states. [2018-10-26 19:06:19,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15104 states to 15104 states and 22198 transitions. [2018-10-26 19:06:19,301 INFO L78 Accepts]: Start accepts. Automaton has 15104 states and 22198 transitions. Word has length 102 [2018-10-26 19:06:19,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:19,302 INFO L481 AbstractCegarLoop]: Abstraction has 15104 states and 22198 transitions. [2018-10-26 19:06:19,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:06:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 15104 states and 22198 transitions. [2018-10-26 19:06:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-26 19:06:19,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:19,307 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:19,307 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:19,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:19,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1710188800, now seen corresponding path program 1 times [2018-10-26 19:06:19,308 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:19,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:19,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:19,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:19,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:19,680 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:06:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:19,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:06:19,978 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 19:06:19,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:20,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:06:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-26 19:06:20,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:06:20,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2018-10-26 19:06:20,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:06:20,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:06:20,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:06:20,152 INFO L87 Difference]: Start difference. First operand 15104 states and 22198 transitions. Second operand 7 states. [2018-10-26 19:06:34,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:34,224 INFO L93 Difference]: Finished difference Result 59535 states and 86819 transitions. [2018-10-26 19:06:34,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:06:34,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2018-10-26 19:06:34,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:34,308 INFO L225 Difference]: With dead ends: 59535 [2018-10-26 19:06:34,308 INFO L226 Difference]: Without dead ends: 44433 [2018-10-26 19:06:34,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:06:34,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44433 states. [2018-10-26 19:06:34,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44433 to 42928. [2018-10-26 19:06:34,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42928 states. [2018-10-26 19:06:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42928 states to 42928 states and 56765 transitions. [2018-10-26 19:06:34,885 INFO L78 Accepts]: Start accepts. Automaton has 42928 states and 56765 transitions. Word has length 176 [2018-10-26 19:06:34,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:34,885 INFO L481 AbstractCegarLoop]: Abstraction has 42928 states and 56765 transitions. [2018-10-26 19:06:34,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:06:34,885 INFO L276 IsEmpty]: Start isEmpty. Operand 42928 states and 56765 transitions. [2018-10-26 19:06:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-26 19:06:34,896 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:34,896 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:06:34,897 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:34,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:34,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1630931784, now seen corresponding path program 1 times [2018-10-26 19:06:34,897 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:34,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:34,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:34,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:34,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 55 proven. 7 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-26 19:06:35,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:06:35,299 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 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 19:06:35,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:35,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:06:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-26 19:06:35,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:06:35,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-26 19:06:35,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:06:35,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:06:35,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:06:35,643 INFO L87 Difference]: Start difference. First operand 42928 states and 56765 transitions. Second operand 5 states. [2018-10-26 19:06:47,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:47,210 INFO L93 Difference]: Finished difference Result 123454 states and 163040 transitions. [2018-10-26 19:06:47,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:06:47,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2018-10-26 19:06:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:47,316 INFO L225 Difference]: With dead ends: 123454 [2018-10-26 19:06:47,316 INFO L226 Difference]: Without dead ends: 80528 [2018-10-26 19:06:47,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:06:47,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80528 states. [2018-10-26 19:06:48,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80528 to 79776. [2018-10-26 19:06:48,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79776 states. [2018-10-26 19:06:48,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79776 states to 79776 states and 95811 transitions. [2018-10-26 19:06:48,323 INFO L78 Accepts]: Start accepts. Automaton has 79776 states and 95811 transitions. Word has length 270 [2018-10-26 19:06:48,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:48,323 INFO L481 AbstractCegarLoop]: Abstraction has 79776 states and 95811 transitions. [2018-10-26 19:06:48,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:06:48,324 INFO L276 IsEmpty]: Start isEmpty. Operand 79776 states and 95811 transitions. [2018-10-26 19:06:48,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-10-26 19:06:48,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:48,352 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:48,352 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:48,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:48,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1107446318, now seen corresponding path program 1 times [2018-10-26 19:06:48,353 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:48,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:48,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:48,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:48,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 227 proven. 5 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:06:48,763 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:06:48,763 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:06:48,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:48,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:06:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-26 19:06:49,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:06:49,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 19:06:49,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:06:49,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:06:49,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:06:49,095 INFO L87 Difference]: Start difference. First operand 79776 states and 95811 transitions. Second operand 7 states. [2018-10-26 19:07:07,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:07,807 INFO L93 Difference]: Finished difference Result 241540 states and 284793 transitions. [2018-10-26 19:07:07,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:07:07,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2018-10-26 19:07:07,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:08,031 INFO L225 Difference]: With dead ends: 241540 [2018-10-26 19:07:08,032 INFO L226 Difference]: Without dead ends: 159507 [2018-10-26 19:07:08,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 377 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 19:07:08,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159507 states. [2018-10-26 19:07:09,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159507 to 127151. [2018-10-26 19:07:09,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127151 states. [2018-10-26 19:07:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127151 states to 127151 states and 140626 transitions. [2018-10-26 19:07:09,472 INFO L78 Accepts]: Start accepts. Automaton has 127151 states and 140626 transitions. Word has length 376 [2018-10-26 19:07:09,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:09,472 INFO L481 AbstractCegarLoop]: Abstraction has 127151 states and 140626 transitions. [2018-10-26 19:07:09,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:07:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 127151 states and 140626 transitions. [2018-10-26 19:07:09,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-10-26 19:07:09,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:09,489 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:09,490 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:09,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:09,490 INFO L82 PathProgramCache]: Analyzing trace with hash 640689002, now seen corresponding path program 1 times [2018-10-26 19:07:09,490 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:09,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:09,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:09,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:09,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 250 proven. 28 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:07:09,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:07:09,930 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:07:09,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:10,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:07:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 250 proven. 28 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:07:10,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:07:10,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-26 19:07:10,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:07:10,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:07:10,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:07:10,298 INFO L87 Difference]: Start difference. First operand 127151 states and 140626 transitions. Second operand 6 states. [2018-10-26 19:07:32,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:32,846 INFO L93 Difference]: Finished difference Result 290411 states and 319745 transitions. [2018-10-26 19:07:32,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:07:32,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 392 [2018-10-26 19:07:32,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:33,046 INFO L225 Difference]: With dead ends: 290411 [2018-10-26 19:07:33,047 INFO L226 Difference]: Without dead ends: 163262 [2018-10-26 19:07:33,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:07:33,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163262 states. [2018-10-26 19:07:34,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163262 to 130159. [2018-10-26 19:07:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130159 states. [2018-10-26 19:07:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130159 states to 130159 states and 142542 transitions. [2018-10-26 19:07:34,200 INFO L78 Accepts]: Start accepts. Automaton has 130159 states and 142542 transitions. Word has length 392 [2018-10-26 19:07:34,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:34,201 INFO L481 AbstractCegarLoop]: Abstraction has 130159 states and 142542 transitions. [2018-10-26 19:07:34,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:07:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 130159 states and 142542 transitions. [2018-10-26 19:07:34,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-10-26 19:07:34,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:34,223 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 19:07:34,223 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:34,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:34,224 INFO L82 PathProgramCache]: Analyzing trace with hash -321722547, now seen corresponding path program 1 times [2018-10-26 19:07:34,224 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:34,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:34,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:34,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:34,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:34,645 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-10-26 19:07:34,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:34,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:07:34,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:07:34,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:07:34,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:07:34,647 INFO L87 Difference]: Start difference. First operand 130159 states and 142542 transitions. Second operand 3 states. [2018-10-26 19:07:40,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:40,466 INFO L93 Difference]: Finished difference Result 277612 states and 304664 transitions. [2018-10-26 19:07:40,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:07:40,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 456 [2018-10-26 19:07:40,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:40,605 INFO L225 Difference]: With dead ends: 277612 [2018-10-26 19:07:40,605 INFO L226 Difference]: Without dead ends: 147455 [2018-10-26 19:07:40,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 19:07:40,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147455 states. [2018-10-26 19:07:41,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147455 to 147455. [2018-10-26 19:07:41,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147455 states. [2018-10-26 19:07:41,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147455 states to 147455 states and 159421 transitions. [2018-10-26 19:07:41,693 INFO L78 Accepts]: Start accepts. Automaton has 147455 states and 159421 transitions. Word has length 456 [2018-10-26 19:07:41,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:41,693 INFO L481 AbstractCegarLoop]: Abstraction has 147455 states and 159421 transitions. [2018-10-26 19:07:41,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:07:41,693 INFO L276 IsEmpty]: Start isEmpty. Operand 147455 states and 159421 transitions. [2018-10-26 19:07:41,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-10-26 19:07:41,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:41,708 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:41,709 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:41,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:41,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1900862473, now seen corresponding path program 1 times [2018-10-26 19:07:41,709 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:41,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:41,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:41,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:41,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2018-10-26 19:07:42,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:42,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:07:42,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:07:42,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:07:42,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:07:42,465 INFO L87 Difference]: Start difference. First operand 147455 states and 159421 transitions. Second operand 5 states. [2018-10-26 19:07:55,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:55,013 INFO L93 Difference]: Finished difference Result 422045 states and 456666 transitions. [2018-10-26 19:07:55,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:07:55,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2018-10-26 19:07:55,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:55,334 INFO L225 Difference]: With dead ends: 422045 [2018-10-26 19:07:55,334 INFO L226 Difference]: Without dead ends: 274592 [2018-10-26 19:07:55,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:07:55,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274592 states. [2018-10-26 19:07:58,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274592 to 223454. [2018-10-26 19:07:58,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223454 states. [2018-10-26 19:07:58,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223454 states to 223454 states and 238973 transitions. [2018-10-26 19:07:58,509 INFO L78 Accepts]: Start accepts. Automaton has 223454 states and 238973 transitions. Word has length 467 [2018-10-26 19:07:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:58,510 INFO L481 AbstractCegarLoop]: Abstraction has 223454 states and 238973 transitions. [2018-10-26 19:07:58,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:07:58,511 INFO L276 IsEmpty]: Start isEmpty. Operand 223454 states and 238973 transitions. [2018-10-26 19:07:58,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-10-26 19:07:58,522 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:58,522 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 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 19:07:58,522 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:58,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:58,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1940674813, now seen corresponding path program 1 times [2018-10-26 19:07:58,523 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:58,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:58,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:58,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:58,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:59,095 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-26 19:07:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 491 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:07:59,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:07:59,252 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:07:59,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:59,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:07:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 491 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:07:59,809 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:07:59,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-26 19:07:59,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:07:59,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:07:59,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:07:59,812 INFO L87 Difference]: Start difference. First operand 223454 states and 238973 transitions. Second operand 6 states. [2018-10-26 19:08:24,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:08:24,824 INFO L93 Difference]: Finished difference Result 489783 states and 525278 transitions. [2018-10-26 19:08:24,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:08:24,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 488 [2018-10-26 19:08:24,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:08:25,135 INFO L225 Difference]: With dead ends: 489783 [2018-10-26 19:08:25,136 INFO L226 Difference]: Without dead ends: 266331 [2018-10-26 19:08:25,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 489 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:08:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266331 states. [2018-10-26 19:08:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266331 to 232478. [2018-10-26 19:08:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232478 states. [2018-10-26 19:08:34,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232478 states to 232478 states and 245233 transitions. [2018-10-26 19:08:34,047 INFO L78 Accepts]: Start accepts. Automaton has 232478 states and 245233 transitions. Word has length 488 [2018-10-26 19:08:34,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:08:34,048 INFO L481 AbstractCegarLoop]: Abstraction has 232478 states and 245233 transitions. [2018-10-26 19:08:34,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:08:34,048 INFO L276 IsEmpty]: Start isEmpty. Operand 232478 states and 245233 transitions. [2018-10-26 19:08:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-10-26 19:08:34,057 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:08:34,057 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 19:08:34,058 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:08:34,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:08:34,058 INFO L82 PathProgramCache]: Analyzing trace with hash -198234994, now seen corresponding path program 1 times [2018-10-26 19:08:34,058 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:08:34,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:08:34,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:34,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:34,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-26 19:08:34,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:08:34,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:08:34,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:08:34,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:08:34,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:08:34,615 INFO L87 Difference]: Start difference. First operand 232478 states and 245233 transitions. Second operand 4 states. [2018-10-26 19:08:44,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:08:44,929 INFO L93 Difference]: Finished difference Result 454409 states and 479748 transitions. [2018-10-26 19:08:44,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:08:44,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 494 [2018-10-26 19:08:44,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:08:45,121 INFO L225 Difference]: With dead ends: 454409 [2018-10-26 19:08:45,121 INFO L226 Difference]: Without dead ends: 187285 [2018-10-26 19:08:45,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 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 19:08:45,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187285 states. [2018-10-26 19:08:47,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187285 to 181269. [2018-10-26 19:08:47,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181269 states. [2018-10-26 19:08:47,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181269 states to 181269 states and 190102 transitions. [2018-10-26 19:08:47,466 INFO L78 Accepts]: Start accepts. Automaton has 181269 states and 190102 transitions. Word has length 494 [2018-10-26 19:08:47,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:08:47,467 INFO L481 AbstractCegarLoop]: Abstraction has 181269 states and 190102 transitions. [2018-10-26 19:08:47,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:08:47,467 INFO L276 IsEmpty]: Start isEmpty. Operand 181269 states and 190102 transitions. [2018-10-26 19:08:47,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-10-26 19:08:47,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:08:47,478 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:08:47,479 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:08:47,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:08:47,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1920332186, now seen corresponding path program 1 times [2018-10-26 19:08:47,479 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:08:47,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:08:47,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:47,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:47,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:47,988 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 19:08:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-26 19:08:48,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:08:48,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:08:48,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:08:48,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:08:48,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:08:48,800 INFO L87 Difference]: Start difference. First operand 181269 states and 190102 transitions. Second operand 4 states. [2018-10-26 19:08:54,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:08:54,660 INFO L93 Difference]: Finished difference Result 360272 states and 377919 transitions. [2018-10-26 19:08:54,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:08:54,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 510 [2018-10-26 19:08:54,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:08:54,891 INFO L225 Difference]: With dead ends: 360272 [2018-10-26 19:08:54,891 INFO L226 Difference]: Without dead ends: 179005 [2018-10-26 19:08:55,013 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 19:08:56,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179005 states. [2018-10-26 19:08:57,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179005 to 172989. [2018-10-26 19:08:57,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172989 states. [2018-10-26 19:08:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172989 states to 172989 states and 180428 transitions. [2018-10-26 19:08:57,497 INFO L78 Accepts]: Start accepts. Automaton has 172989 states and 180428 transitions. Word has length 510 [2018-10-26 19:08:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:08:57,497 INFO L481 AbstractCegarLoop]: Abstraction has 172989 states and 180428 transitions. [2018-10-26 19:08:57,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:08:57,498 INFO L276 IsEmpty]: Start isEmpty. Operand 172989 states and 180428 transitions. [2018-10-26 19:08:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-10-26 19:08:57,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:08:57,504 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:08:57,505 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:08:57,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:08:57,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1340619621, now seen corresponding path program 1 times [2018-10-26 19:08:57,505 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:08:57,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:08:57,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:57,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:57,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 485 proven. 98 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:08:58,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:08:58,450 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:08:58,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:58,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:08:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 485 proven. 98 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:08:58,912 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:08:58,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2018-10-26 19:08:58,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:08:58,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:08:58,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:08:58,914 INFO L87 Difference]: Start difference. First operand 172989 states and 180428 transitions. Second operand 7 states. Received shutdown request... [2018-10-26 19:08:59,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:08:59,652 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:08:59,658 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:08:59,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:08:59 BoogieIcfgContainer [2018-10-26 19:08:59,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:08:59,660 INFO L168 Benchmark]: Toolchain (without parser) took 224872.12 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -725.0 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-26 19:08:59,661 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:08:59,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2181.57 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 19:08:59,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 613.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -984.3 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:08:59,665 INFO L168 Benchmark]: Boogie Preprocessor took 445.93 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: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:08:59,666 INFO L168 Benchmark]: RCFGBuilder took 8477.85 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 224.9 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -185.2 MB). Peak memory consumption was 623.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:08:59,666 INFO L168 Benchmark]: TraceAbstraction took 213148.18 ms. Allocated memory was 2.5 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 195.7 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-26 19:08:59,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2181.57 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 613.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -984.3 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 445.93 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: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8477.85 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 224.9 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -185.2 MB). Peak memory consumption was 623.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213148.18 ms. Allocated memory was 2.5 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 195.7 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 99). Cancelled while BasicCegarLoop was constructing difference of abstraction (172989states) and FLOYD_HOARE automaton (currently 5 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (297 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 213.0s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 179.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7034 SDtfs, 39174 SDslu, 1698 SDs, 0 SdLazy, 89270 SolverSat, 17350 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 143.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2403 GetRequests, 2332 SyntacticMatches, 15 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232478occurred in iteration=10, 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: 22.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 172277 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 6695 NumberOfCodeBlocks, 6695 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 6675 ConstructedInterpolants, 0 QuantifiedInterpolants, 5880382 SizeOfPredicates, 5 NumberOfNonLiveVariables, 3068 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 20 InterpolantComputations, 10 PerfectInterpolantSequences, 6690/7102 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown