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/Problem15_label02_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:16:53,561 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:16:53,563 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:16:53,577 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:16:53,578 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:16:53,579 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:16:53,581 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:16:53,583 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:16:53,585 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:16:53,586 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:16:53,587 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:16:53,587 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:16:53,588 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:16:53,589 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:16:53,591 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:16:53,591 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:16:53,592 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:16:53,594 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:16:53,596 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:16:53,598 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:16:53,599 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:16:53,601 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:16:53,603 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:16:53,603 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:16:53,603 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:16:53,604 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:16:53,605 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:16:53,606 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:16:53,607 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:16:53,608 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:16:53,608 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:16:53,609 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:16:53,611 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:16:53,640 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:16:53,640 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:16:53,642 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:16:53,642 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:16:53,643 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:16:53,643 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:16:53,643 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:16:53,644 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:16:53,644 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:16:53,644 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:16:53,644 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:16:53,644 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:16:53,644 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:16:53,645 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:16:53,645 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:16:53,645 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:16:53,645 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:16:53,645 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:16:53,647 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:16:53,647 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:16:53,647 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:16:53,647 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:16:53,648 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:16:53,648 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:16:53,648 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:16:53,648 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:16:53,649 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:16:53,649 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:16:53,697 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:16:53,713 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:16:53,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:16:53,719 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:16:53,720 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:16:53,720 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label02_false-unreach-call.c [2018-10-24 14:16:53,798 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f528e8f5e/c0e7437fadc64f99b3600eba28b01d64/FLAG59dd08e9e [2018-10-24 14:16:54,508 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:16:54,509 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label02_false-unreach-call.c [2018-10-24 14:16:54,528 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f528e8f5e/c0e7437fadc64f99b3600eba28b01d64/FLAG59dd08e9e [2018-10-24 14:16:54,543 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f528e8f5e/c0e7437fadc64f99b3600eba28b01d64 [2018-10-24 14:16:54,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:16:54,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:16:54,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:16:54,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:16:54,561 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:16:54,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:16:54" (1/1) ... [2018-10-24 14:16:54,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa98528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:54, skipping insertion in model container [2018-10-24 14:16:54,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:16:54" (1/1) ... [2018-10-24 14:16:54,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:16:54,675 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:16:55,421 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:16:55,426 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:16:55,702 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:16:55,724 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:16:55,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:55 WrapperNode [2018-10-24 14:16:55,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:16:55,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:16:55,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:16:55,727 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:16:55,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:55" (1/1) ... [2018-10-24 14:16:55,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:55" (1/1) ... [2018-10-24 14:16:56,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:16:56,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:16:56,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:16:56,146 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:16:56,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:55" (1/1) ... [2018-10-24 14:16:56,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:55" (1/1) ... [2018-10-24 14:16:56,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:55" (1/1) ... [2018-10-24 14:16:56,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:55" (1/1) ... [2018-10-24 14:16:56,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:55" (1/1) ... [2018-10-24 14:16:56,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:55" (1/1) ... [2018-10-24 14:16:56,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:55" (1/1) ... [2018-10-24 14:16:56,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:16:56,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:16:56,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:16:56,402 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:16:56,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:16:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:16:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:16:56,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:17:04,650 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:17:04,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:17:04 BoogieIcfgContainer [2018-10-24 14:17:04,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:17:04,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:17:04,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:17:04,661 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:17:04,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:16:54" (1/3) ... [2018-10-24 14:17:04,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498d1f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:17:04, skipping insertion in model container [2018-10-24 14:17:04,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:55" (2/3) ... [2018-10-24 14:17:04,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498d1f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:17:04, skipping insertion in model container [2018-10-24 14:17:04,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:17:04" (3/3) ... [2018-10-24 14:17:04,669 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label02_false-unreach-call.c [2018-10-24 14:17:04,679 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:17:04,687 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:17:04,706 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:17:04,745 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:17:04,746 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:17:04,746 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:17:04,746 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:17:04,746 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:17:04,746 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:17:04,746 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:17:04,747 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:17:04,747 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:17:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-24 14:17:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-24 14:17:04,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:17:04,784 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] [2018-10-24 14:17:04,787 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:17:04,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:17:04,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1827210562, now seen corresponding path program 1 times [2018-10-24 14:17:04,796 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:17:04,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:17:04,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:04,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:17:04,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:17:05,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:17:05,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:17:05,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:17:05,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:17:05,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:17:05,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:17:05,209 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-10-24 14:17:14,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:17:14,271 INFO L93 Difference]: Finished difference Result 1518 states and 2792 transitions. [2018-10-24 14:17:14,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:17:14,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-10-24 14:17:14,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:17:14,305 INFO L225 Difference]: With dead ends: 1518 [2018-10-24 14:17:14,306 INFO L226 Difference]: Without dead ends: 1086 [2018-10-24 14:17:14,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:17:14,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2018-10-24 14:17:14,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1063. [2018-10-24 14:17:14,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-10-24 14:17:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1813 transitions. [2018-10-24 14:17:14,422 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1813 transitions. Word has length 29 [2018-10-24 14:17:14,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:17:14,423 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1813 transitions. [2018-10-24 14:17:14,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:17:14,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1813 transitions. [2018-10-24 14:17:14,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 14:17:14,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:17:14,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:17:14,429 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:17:14,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:17:14,430 INFO L82 PathProgramCache]: Analyzing trace with hash -334858861, now seen corresponding path program 1 times [2018-10-24 14:17:14,430 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:17:14,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:17:14,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:14,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:17:14,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:17:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:17:14,760 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:17:14,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:17:14,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:17:14,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:17:14,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:17:14,763 INFO L87 Difference]: Start difference. First operand 1063 states and 1813 transitions. Second operand 4 states. [2018-10-24 14:17:20,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:17:20,889 INFO L93 Difference]: Finished difference Result 4005 states and 6946 transitions. [2018-10-24 14:17:20,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:17:20,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2018-10-24 14:17:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:17:20,906 INFO L225 Difference]: With dead ends: 4005 [2018-10-24 14:17:20,907 INFO L226 Difference]: Without dead ends: 2944 [2018-10-24 14:17:20,912 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:17:20,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2018-10-24 14:17:20,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1963. [2018-10-24 14:17:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1963 states. [2018-10-24 14:17:20,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2983 transitions. [2018-10-24 14:17:20,970 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2983 transitions. Word has length 98 [2018-10-24 14:17:20,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:17:20,971 INFO L481 AbstractCegarLoop]: Abstraction has 1963 states and 2983 transitions. [2018-10-24 14:17:20,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:17:20,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2983 transitions. [2018-10-24 14:17:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 14:17:20,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:17:20,982 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:17:20,982 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:17:20,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:17:20,982 INFO L82 PathProgramCache]: Analyzing trace with hash -2086905433, now seen corresponding path program 1 times [2018-10-24 14:17:20,983 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:17:20,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:17:20,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:20,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:17:20,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:17:21,407 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:17:21,408 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:17:21,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:17:21,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:17:21,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:17:21,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:17:21,410 INFO L87 Difference]: Start difference. First operand 1963 states and 2983 transitions. Second operand 4 states. [2018-10-24 14:17:29,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:17:29,813 INFO L93 Difference]: Finished difference Result 7528 states and 11550 transitions. [2018-10-24 14:17:29,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:17:29,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-24 14:17:29,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:17:29,850 INFO L225 Difference]: With dead ends: 7528 [2018-10-24 14:17:29,850 INFO L226 Difference]: Without dead ends: 5567 [2018-10-24 14:17:29,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:17:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2018-10-24 14:17:29,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 5565. [2018-10-24 14:17:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5565 states. [2018-10-24 14:17:29,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5565 states to 5565 states and 7621 transitions. [2018-10-24 14:17:29,973 INFO L78 Accepts]: Start accepts. Automaton has 5565 states and 7621 transitions. Word has length 106 [2018-10-24 14:17:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:17:29,973 INFO L481 AbstractCegarLoop]: Abstraction has 5565 states and 7621 transitions. [2018-10-24 14:17:29,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:17:29,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5565 states and 7621 transitions. [2018-10-24 14:17:29,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-24 14:17:29,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:17:29,991 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:17:29,991 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:17:29,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:17:29,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1552663638, now seen corresponding path program 1 times [2018-10-24 14:17:29,996 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:17:29,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:17:29,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:29,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:17:29,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:17:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 14:17:30,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:17:30,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:17:30,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:17:30,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:17:30,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:17:30,355 INFO L87 Difference]: Start difference. First operand 5565 states and 7621 transitions. Second operand 4 states. [2018-10-24 14:17:35,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:17:35,189 INFO L93 Difference]: Finished difference Result 11127 states and 15241 transitions. [2018-10-24 14:17:35,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:17:35,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2018-10-24 14:17:35,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:17:35,215 INFO L225 Difference]: With dead ends: 11127 [2018-10-24 14:17:35,216 INFO L226 Difference]: Without dead ends: 5564 [2018-10-24 14:17:35,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:17:35,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2018-10-24 14:17:35,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 5562. [2018-10-24 14:17:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5562 states. [2018-10-24 14:17:35,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 6703 transitions. [2018-10-24 14:17:35,331 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 6703 transitions. Word has length 191 [2018-10-24 14:17:35,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:17:35,332 INFO L481 AbstractCegarLoop]: Abstraction has 5562 states and 6703 transitions. [2018-10-24 14:17:35,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:17:35,332 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 6703 transitions. [2018-10-24 14:17:35,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-24 14:17:35,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:17:35,337 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:17:35,338 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:17:35,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:17:35,338 INFO L82 PathProgramCache]: Analyzing trace with hash -2046084226, now seen corresponding path program 1 times [2018-10-24 14:17:35,338 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:17:35,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:17:35,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:35,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:17:35,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:17:36,092 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-24 14:17:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 14:17:36,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:17:36,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:17:36,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:17:36,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:17:36,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:17:36,512 INFO L87 Difference]: Start difference. First operand 5562 states and 6703 transitions. Second operand 5 states. [2018-10-24 14:17:42,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:17:42,604 INFO L93 Difference]: Finished difference Result 11727 states and 14049 transitions. [2018-10-24 14:17:42,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:17:42,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 343 [2018-10-24 14:17:42,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:17:42,631 INFO L225 Difference]: With dead ends: 11727 [2018-10-24 14:17:42,631 INFO L226 Difference]: Without dead ends: 6167 [2018-10-24 14:17:42,639 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:17:42,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6167 states. [2018-10-24 14:17:42,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6167 to 5863. [2018-10-24 14:17:42,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5863 states. [2018-10-24 14:17:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5863 states to 5863 states and 6987 transitions. [2018-10-24 14:17:42,734 INFO L78 Accepts]: Start accepts. Automaton has 5863 states and 6987 transitions. Word has length 343 [2018-10-24 14:17:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:17:42,735 INFO L481 AbstractCegarLoop]: Abstraction has 5863 states and 6987 transitions. [2018-10-24 14:17:42,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:17:42,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5863 states and 6987 transitions. [2018-10-24 14:17:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-24 14:17:42,741 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:17:42,742 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:17:42,742 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:17:42,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:17:42,743 INFO L82 PathProgramCache]: Analyzing trace with hash -494663710, now seen corresponding path program 1 times [2018-10-24 14:17:42,743 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:17:42,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:17:42,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:42,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:17:42,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:17:43,464 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 3 [2018-10-24 14:17:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:17:43,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:17:43,907 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:17:43,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:17:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:17:44,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:17:46,389 WARN L179 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 467 DAG size of output: 28 [2018-10-24 14:18:11,080 WARN L179 SmtUtils]: Spent 24.47 s on a formula simplification. DAG size of input: 306 DAG size of output: 215 [2018-10-24 14:18:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:18:12,612 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:18:12,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-24 14:18:12,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 14:18:12,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 14:18:12,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:18:12,615 INFO L87 Difference]: Start difference. First operand 5863 states and 6987 transitions. Second operand 9 states. Received shutdown request... [2018-10-24 14:21:21,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 14:21:21,723 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:21:21,729 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:21:21,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:21:21 BoogieIcfgContainer [2018-10-24 14:21:21,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:21:21,731 INFO L168 Benchmark]: Toolchain (without parser) took 267176.89 ms. Allocated memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: 1.4 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 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 14:21:21,732 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:21:21,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1169.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:21:21,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 418.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 14:21:21,735 INFO L168 Benchmark]: Boogie Preprocessor took 256.21 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:21:21,736 INFO L168 Benchmark]: RCFGBuilder took 8249.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 295.5 MB). Peak memory consumption was 295.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:21:21,737 INFO L168 Benchmark]: TraceAbstraction took 257074.19 ms. Allocated memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: 661.7 MB). Free memory was 1.8 GB in the beginning and 2.8 GB in the end (delta: -977.3 MB). Peak memory consumption was 809.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:21:21,745 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1169.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 418.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 256.21 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8249.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 295.5 MB). Peak memory consumption was 295.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257074.19 ms. Allocated memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: 661.7 MB). Free memory was 1.8 GB in the beginning and 2.8 GB in the end (delta: -977.3 MB). Peak memory consumption was 809.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was constructing difference of abstraction (5863states) and FLOYD_HOARE automaton (currently 8 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (12278 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 256.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 223.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2134 SDtfs, 5832 SDslu, 1168 SDs, 0 SdLazy, 14643 SolverSat, 2740 SolverUnsat, 77 SolverUnknown, 0 SolverNotchecked, 217.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 381 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 28.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5863occurred in iteration=5, 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: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 1312 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 31.2s InterpolantComputationTime, 1523 NumberOfCodeBlocks, 1523 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1516 ConstructedInterpolants, 93 QuantifiedInterpolants, 9597580 SizeOfPredicates, 1 NumberOfNonLiveVariables, 455 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 368/524 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown