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/Problem11_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 13:59:29,457 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 13:59:29,459 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 13:59:29,472 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 13:59:29,472 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 13:59:29,475 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 13:59:29,477 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 13:59:29,482 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 13:59:29,490 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 13:59:29,491 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 13:59:29,492 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 13:59:29,492 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 13:59:29,493 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 13:59:29,494 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 13:59:29,496 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 13:59:29,497 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 13:59:29,498 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 13:59:29,503 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 13:59:29,508 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 13:59:29,510 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 13:59:29,513 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 13:59:29,514 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 13:59:29,519 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 13:59:29,519 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 13:59:29,520 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 13:59:29,521 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 13:59:29,522 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 13:59:29,523 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 13:59:29,526 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 13:59:29,527 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 13:59:29,527 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 13:59:29,528 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 13:59:29,530 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 13:59:29,544 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 13:59:29,544 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 13:59:29,545 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 13:59:29,545 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 13:59:29,546 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 13:59:29,546 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 13:59:29,546 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 13:59:29,547 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 13:59:29,547 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 13:59:29,547 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 13:59:29,547 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 13:59:29,547 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 13:59:29,548 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 13:59:29,548 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 13:59:29,548 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 13:59:29,548 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 13:59:29,548 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 13:59:29,549 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 13:59:29,549 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 13:59:29,549 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 13:59:29,549 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 13:59:29,549 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 13:59:29,549 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 13:59:29,550 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 13:59:29,550 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 13:59:29,550 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 13:59:29,550 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 13:59:29,550 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 13:59:29,593 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 13:59:29,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 13:59:29,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 13:59:29,613 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 13:59:29,613 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 13:59:29,614 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label31_false-unreach-call.c [2018-10-24 13:59:29,665 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7dc0e890f/f7b94f4f7dee4753b985eaeecc087896/FLAG1f52f6417 [2018-10-24 13:59:30,310 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 13:59:30,313 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label31_false-unreach-call.c [2018-10-24 13:59:30,327 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7dc0e890f/f7b94f4f7dee4753b985eaeecc087896/FLAG1f52f6417 [2018-10-24 13:59:30,346 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7dc0e890f/f7b94f4f7dee4753b985eaeecc087896 [2018-10-24 13:59:30,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 13:59:30,358 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 13:59:30,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 13:59:30,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 13:59:30,363 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 13:59:30,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:59:30" (1/1) ... [2018-10-24 13:59:30,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@401f344f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:30, skipping insertion in model container [2018-10-24 13:59:30,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:59:30" (1/1) ... [2018-10-24 13:59:30,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 13:59:30,449 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 13:59:31,029 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 13:59:31,034 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 13:59:31,237 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 13:59:31,259 INFO L193 MainTranslator]: Completed translation [2018-10-24 13:59:31,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:31 WrapperNode [2018-10-24 13:59:31,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 13:59:31,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 13:59:31,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 13:59:31,261 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 13:59:31,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:31" (1/1) ... [2018-10-24 13:59:31,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:31" (1/1) ... [2018-10-24 13:59:31,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 13:59:31,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 13:59:31,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 13:59:31,569 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 13:59:31,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:31" (1/1) ... [2018-10-24 13:59:31,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:31" (1/1) ... [2018-10-24 13:59:31,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:31" (1/1) ... [2018-10-24 13:59:31,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:31" (1/1) ... [2018-10-24 13:59:31,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:31" (1/1) ... [2018-10-24 13:59:31,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:31" (1/1) ... [2018-10-24 13:59:31,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:31" (1/1) ... [2018-10-24 13:59:31,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 13:59:31,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 13:59:31,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 13:59:31,706 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 13:59:31,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:31" (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 13:59:31,780 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 13:59:31,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 13:59:31,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 13:59:36,582 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 13:59:36,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:59:36 BoogieIcfgContainer [2018-10-24 13:59:36,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 13:59:36,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 13:59:36,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 13:59:36,588 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 13:59:36,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:59:30" (1/3) ... [2018-10-24 13:59:36,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab10a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:59:36, skipping insertion in model container [2018-10-24 13:59:36,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:31" (2/3) ... [2018-10-24 13:59:36,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab10a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:59:36, skipping insertion in model container [2018-10-24 13:59:36,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:59:36" (3/3) ... [2018-10-24 13:59:36,592 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label31_false-unreach-call.c [2018-10-24 13:59:36,602 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 13:59:36,610 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 13:59:36,628 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 13:59:36,666 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 13:59:36,666 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 13:59:36,667 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 13:59:36,667 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 13:59:36,667 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 13:59:36,667 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 13:59:36,668 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 13:59:36,668 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 13:59:36,668 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 13:59:36,694 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-10-24 13:59:36,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-24 13:59:36,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:59:36,702 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:59:36,704 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:59:36,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:59:36,710 INFO L82 PathProgramCache]: Analyzing trace with hash 150940466, now seen corresponding path program 1 times [2018-10-24 13:59:36,712 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:59:36,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:59:36,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:36,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:59:36,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:59:36,912 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 13:59:36,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:59:36,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 13:59:36,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:59:36,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:59:36,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:59:36,938 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 3 states. [2018-10-24 13:59:39,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:59:39,371 INFO L93 Difference]: Finished difference Result 764 states and 1348 transitions. [2018-10-24 13:59:39,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:59:39,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-10-24 13:59:39,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:59:39,394 INFO L225 Difference]: With dead ends: 764 [2018-10-24 13:59:39,394 INFO L226 Difference]: Without dead ends: 476 [2018-10-24 13:59:39,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:59:39,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2018-10-24 13:59:39,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2018-10-24 13:59:39,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2018-10-24 13:59:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 723 transitions. [2018-10-24 13:59:39,478 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 723 transitions. Word has length 8 [2018-10-24 13:59:39,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:59:39,479 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 723 transitions. [2018-10-24 13:59:39,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:59:39,479 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 723 transitions. [2018-10-24 13:59:39,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-24 13:59:39,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:59:39,482 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 13:59:39,482 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:59:39,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:59:39,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1337609803, now seen corresponding path program 1 times [2018-10-24 13:59:39,483 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:59:39,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:59:39,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:39,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:59:39,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:59:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 13:59:39,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:59:39,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:59:39,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:59:39,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:59:39,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:59:39,852 INFO L87 Difference]: Start difference. First operand 476 states and 723 transitions. Second operand 4 states. [2018-10-24 13:59:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:59:43,018 INFO L93 Difference]: Finished difference Result 1713 states and 2683 transitions. [2018-10-24 13:59:43,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:59:43,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2018-10-24 13:59:43,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:59:43,027 INFO L225 Difference]: With dead ends: 1713 [2018-10-24 13:59:43,027 INFO L226 Difference]: Without dead ends: 1239 [2018-10-24 13:59:43,031 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 13:59:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2018-10-24 13:59:43,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1222. [2018-10-24 13:59:43,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1222 states. [2018-10-24 13:59:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1765 transitions. [2018-10-24 13:59:43,090 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1765 transitions. Word has length 77 [2018-10-24 13:59:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:59:43,091 INFO L481 AbstractCegarLoop]: Abstraction has 1222 states and 1765 transitions. [2018-10-24 13:59:43,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:59:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1765 transitions. [2018-10-24 13:59:43,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-24 13:59:43,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:59:43,095 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 13:59:43,095 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:59:43,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:59:43,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1873098807, now seen corresponding path program 1 times [2018-10-24 13:59:43,096 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:59:43,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:59:43,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:43,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:59:43,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:59:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 13:59:43,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:59:43,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:59:43,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:59:43,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:59:43,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:59:43,392 INFO L87 Difference]: Start difference. First operand 1222 states and 1765 transitions. Second operand 4 states. [2018-10-24 13:59:48,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:59:48,717 INFO L93 Difference]: Finished difference Result 4507 states and 6630 transitions. [2018-10-24 13:59:48,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:59:48,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2018-10-24 13:59:48,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:59:48,735 INFO L225 Difference]: With dead ends: 4507 [2018-10-24 13:59:48,735 INFO L226 Difference]: Without dead ends: 3287 [2018-10-24 13:59:48,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:59:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2018-10-24 13:59:48,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2333. [2018-10-24 13:59:48,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2333 states. [2018-10-24 13:59:48,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 3059 transitions. [2018-10-24 13:59:48,795 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 3059 transitions. Word has length 85 [2018-10-24 13:59:48,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:59:48,795 INFO L481 AbstractCegarLoop]: Abstraction has 2333 states and 3059 transitions. [2018-10-24 13:59:48,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:59:48,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 3059 transitions. [2018-10-24 13:59:48,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 13:59:48,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:59:48,801 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 13:59:48,801 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:59:48,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:59:48,801 INFO L82 PathProgramCache]: Analyzing trace with hash -306585817, now seen corresponding path program 1 times [2018-10-24 13:59:48,802 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:59:48,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:59:48,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:48,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:59:48,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:59:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 13:59:49,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:59:49,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 13:59:49,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:59:49,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:59:49,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:59:49,127 INFO L87 Difference]: Start difference. First operand 2333 states and 3059 transitions. Second operand 4 states. [2018-10-24 13:59:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:59:51,199 INFO L93 Difference]: Finished difference Result 6539 states and 9024 transitions. [2018-10-24 13:59:51,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:59:51,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-10-24 13:59:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:59:51,221 INFO L225 Difference]: With dead ends: 6539 [2018-10-24 13:59:51,221 INFO L226 Difference]: Without dead ends: 4393 [2018-10-24 13:59:51,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 13:59:51,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4393 states. [2018-10-24 13:59:51,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4393 to 3444. [2018-10-24 13:59:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3444 states. [2018-10-24 13:59:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3444 states to 3444 states and 4414 transitions. [2018-10-24 13:59:51,295 INFO L78 Accepts]: Start accepts. Automaton has 3444 states and 4414 transitions. Word has length 136 [2018-10-24 13:59:51,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:59:51,296 INFO L481 AbstractCegarLoop]: Abstraction has 3444 states and 4414 transitions. [2018-10-24 13:59:51,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:59:51,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3444 states and 4414 transitions. [2018-10-24 13:59:51,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-24 13:59:51,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:59:51,309 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:51,309 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:59:51,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:59:51,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1995695159, now seen corresponding path program 1 times [2018-10-24 13:59:51,309 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:59:51,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:59:51,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:51,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:59:51,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:59:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 13:59:51,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:59:51,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:59:51,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:59:51,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:59:51,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:59:51,524 INFO L87 Difference]: Start difference. First operand 3444 states and 4414 transitions. Second operand 3 states. [2018-10-24 13:59:54,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:59:54,221 INFO L93 Difference]: Finished difference Result 7822 states and 10140 transitions. [2018-10-24 13:59:54,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:59:54,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2018-10-24 13:59:54,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:59:54,241 INFO L225 Difference]: With dead ends: 7822 [2018-10-24 13:59:54,241 INFO L226 Difference]: Without dead ends: 4565 [2018-10-24 13:59:54,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:59:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4565 states. [2018-10-24 13:59:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4565 to 4555. [2018-10-24 13:59:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4555 states. [2018-10-24 13:59:54,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4555 states to 4555 states and 5700 transitions. [2018-10-24 13:59:54,339 INFO L78 Accepts]: Start accepts. Automaton has 4555 states and 5700 transitions. Word has length 191 [2018-10-24 13:59:54,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:59:54,340 INFO L481 AbstractCegarLoop]: Abstraction has 4555 states and 5700 transitions. [2018-10-24 13:59:54,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:59:54,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4555 states and 5700 transitions. [2018-10-24 13:59:54,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-24 13:59:54,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:59:54,343 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:54,344 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:59:54,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:59:54,344 INFO L82 PathProgramCache]: Analyzing trace with hash 887108873, now seen corresponding path program 1 times [2018-10-24 13:59:54,344 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:59:54,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:59:54,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:54,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:59:54,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:59:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 11 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 13:59:55,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 13:59:55,045 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 13:59:55,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:59:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:59:55,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 13:59:55,833 WARN L179 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 28 [2018-10-24 13:59:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 11 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 13:59:56,326 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 13:59:56,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2018-10-24 13:59:56,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 13:59:56,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 13:59:56,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 13:59:56,328 INFO L87 Difference]: Start difference. First operand 4555 states and 5700 transitions. Second operand 7 states. [2018-10-24 13:59:56,568 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-24 14:00:11,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:11,745 INFO L93 Difference]: Finished difference Result 13952 states and 18059 transitions. [2018-10-24 14:00:11,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 14:00:11,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2018-10-24 14:00:11,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:11,783 INFO L225 Difference]: With dead ends: 13952 [2018-10-24 14:00:11,783 INFO L226 Difference]: Without dead ends: 8834 [2018-10-24 14:00:11,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2018-10-24 14:00:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8834 states. [2018-10-24 14:00:12,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8834 to 8642. [2018-10-24 14:00:12,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8642 states. [2018-10-24 14:00:12,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8642 states to 8642 states and 10369 transitions. [2018-10-24 14:00:12,062 INFO L78 Accepts]: Start accepts. Automaton has 8642 states and 10369 transitions. Word has length 192 [2018-10-24 14:00:12,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:12,063 INFO L481 AbstractCegarLoop]: Abstraction has 8642 states and 10369 transitions. [2018-10-24 14:00:12,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:00:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 8642 states and 10369 transitions. [2018-10-24 14:00:12,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-24 14:00:12,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:12,066 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:12,067 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:12,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:12,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1124216912, now seen corresponding path program 1 times [2018-10-24 14:00:12,067 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:12,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:12,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:12,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:12,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 14:00:12,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:00:12,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:00:12,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:00:12,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:00:12,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:00:12,276 INFO L87 Difference]: Start difference. First operand 8642 states and 10369 transitions. Second operand 3 states. [2018-10-24 14:00:13,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:13,694 INFO L93 Difference]: Finished difference Result 18219 states and 21913 transitions. [2018-10-24 14:00:13,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:00:13,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2018-10-24 14:00:13,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:13,739 INFO L225 Difference]: With dead ends: 18219 [2018-10-24 14:00:13,739 INFO L226 Difference]: Without dead ends: 9764 [2018-10-24 14:00:13,750 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:00:13,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9764 states. [2018-10-24 14:00:13,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9764 to 9579. [2018-10-24 14:00:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9579 states. [2018-10-24 14:00:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9579 states to 9579 states and 11372 transitions. [2018-10-24 14:00:13,886 INFO L78 Accepts]: Start accepts. Automaton has 9579 states and 11372 transitions. Word has length 202 [2018-10-24 14:00:13,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:13,886 INFO L481 AbstractCegarLoop]: Abstraction has 9579 states and 11372 transitions. [2018-10-24 14:00:13,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:00:13,887 INFO L276 IsEmpty]: Start isEmpty. Operand 9579 states and 11372 transitions. [2018-10-24 14:00:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-24 14:00:13,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:13,890 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:13,890 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:13,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:13,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1704410693, now seen corresponding path program 1 times [2018-10-24 14:00:13,891 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:13,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:13,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:13,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:13,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-10-24 14:00:14,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:00:14,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:00:14,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:00:14,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:00:14,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:00:14,062 INFO L87 Difference]: Start difference. First operand 9579 states and 11372 transitions. Second operand 3 states. [2018-10-24 14:00:16,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:16,472 INFO L93 Difference]: Finished difference Result 18975 states and 22559 transitions. [2018-10-24 14:00:16,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:00:16,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2018-10-24 14:00:16,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:16,499 INFO L225 Difference]: With dead ends: 18975 [2018-10-24 14:00:16,500 INFO L226 Difference]: Without dead ends: 9583 [2018-10-24 14:00:16,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:00:16,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2018-10-24 14:00:16,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 9578. [2018-10-24 14:00:16,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9578 states. [2018-10-24 14:00:16,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9578 states to 9578 states and 11042 transitions. [2018-10-24 14:00:16,626 INFO L78 Accepts]: Start accepts. Automaton has 9578 states and 11042 transitions. Word has length 203 [2018-10-24 14:00:16,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:16,627 INFO L481 AbstractCegarLoop]: Abstraction has 9578 states and 11042 transitions. [2018-10-24 14:00:16,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:00:16,627 INFO L276 IsEmpty]: Start isEmpty. Operand 9578 states and 11042 transitions. [2018-10-24 14:00:16,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-24 14:00:16,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:16,630 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:16,631 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:16,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:16,631 INFO L82 PathProgramCache]: Analyzing trace with hash -433997519, now seen corresponding path program 1 times [2018-10-24 14:00:16,631 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:16,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:16,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:16,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:16,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:17,124 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:00:17,337 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 9 [2018-10-24 14:00:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:00:17,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:00:17,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:00:17,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:00:17,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:00:17,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:00:17,378 INFO L87 Difference]: Start difference. First operand 9578 states and 11042 transitions. Second operand 5 states. [2018-10-24 14:00:19,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:19,704 INFO L93 Difference]: Finished difference Result 20289 states and 23571 transitions. [2018-10-24 14:00:19,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:00:19,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2018-10-24 14:00:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:19,723 INFO L225 Difference]: With dead ends: 20289 [2018-10-24 14:00:19,724 INFO L226 Difference]: Without dead ends: 10898 [2018-10-24 14:00:19,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:00:19,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10898 states. [2018-10-24 14:00:19,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10898 to 10511. [2018-10-24 14:00:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10511 states. [2018-10-24 14:00:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10511 states to 10511 states and 12127 transitions. [2018-10-24 14:00:19,854 INFO L78 Accepts]: Start accepts. Automaton has 10511 states and 12127 transitions. Word has length 207 [2018-10-24 14:00:19,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:19,854 INFO L481 AbstractCegarLoop]: Abstraction has 10511 states and 12127 transitions. [2018-10-24 14:00:19,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:00:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 10511 states and 12127 transitions. [2018-10-24 14:00:19,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-24 14:00:19,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:19,858 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:19,859 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:19,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:19,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1999411343, now seen corresponding path program 1 times [2018-10-24 14:00:19,859 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:19,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:19,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:19,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:19,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:00:20,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:00:20,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:00:20,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:00:20,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:00:20,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:00:20,119 INFO L87 Difference]: Start difference. First operand 10511 states and 12127 transitions. Second operand 4 states. [2018-10-24 14:00:21,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:21,774 INFO L93 Difference]: Finished difference Result 21026 states and 24269 transitions. [2018-10-24 14:00:21,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:00:21,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2018-10-24 14:00:21,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:21,792 INFO L225 Difference]: With dead ends: 21026 [2018-10-24 14:00:21,792 INFO L226 Difference]: Without dead ends: 10702 [2018-10-24 14:00:21,802 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 14:00:21,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10702 states. [2018-10-24 14:00:21,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10702 to 8094. [2018-10-24 14:00:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8094 states. [2018-10-24 14:00:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8094 states to 8094 states and 9193 transitions. [2018-10-24 14:00:21,905 INFO L78 Accepts]: Start accepts. Automaton has 8094 states and 9193 transitions. Word has length 223 [2018-10-24 14:00:21,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:21,906 INFO L481 AbstractCegarLoop]: Abstraction has 8094 states and 9193 transitions. [2018-10-24 14:00:21,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:00:21,906 INFO L276 IsEmpty]: Start isEmpty. Operand 8094 states and 9193 transitions. [2018-10-24 14:00:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-24 14:00:21,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:21,911 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:21,912 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:21,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:21,912 INFO L82 PathProgramCache]: Analyzing trace with hash 2034800281, now seen corresponding path program 1 times [2018-10-24 14:00:21,912 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:21,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:21,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:21,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:21,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:22,357 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 14:00:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 76 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:00:22,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:00:22,484 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 [2018-10-24 14:00:22,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:22,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:00:23,017 WARN L179 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-10-24 14:00:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 11 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:00:23,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:00:23,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-24 14:00:23,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 14:00:23,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 14:00:23,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:00:23,333 INFO L87 Difference]: Start difference. First operand 8094 states and 9193 transitions. Second operand 9 states. [2018-10-24 14:00:26,776 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-10-24 14:00:34,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:34,579 INFO L93 Difference]: Finished difference Result 21424 states and 24290 transitions. [2018-10-24 14:00:34,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 14:00:34,579 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 247 [2018-10-24 14:00:34,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:34,597 INFO L225 Difference]: With dead ends: 21424 [2018-10-24 14:00:34,597 INFO L226 Difference]: Without dead ends: 13332 [2018-10-24 14:00:34,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2018-10-24 14:00:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13332 states. [2018-10-24 14:00:34,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13332 to 11124. [2018-10-24 14:00:34,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11124 states. [2018-10-24 14:00:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11124 states to 11124 states and 12538 transitions. [2018-10-24 14:00:34,755 INFO L78 Accepts]: Start accepts. Automaton has 11124 states and 12538 transitions. Word has length 247 [2018-10-24 14:00:34,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:34,755 INFO L481 AbstractCegarLoop]: Abstraction has 11124 states and 12538 transitions. [2018-10-24 14:00:34,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 14:00:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand 11124 states and 12538 transitions. [2018-10-24 14:00:34,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-24 14:00:34,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:34,762 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:00:34,763 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:34,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:34,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1359647880, now seen corresponding path program 1 times [2018-10-24 14:00:34,763 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:34,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:34,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:34,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:34,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:35,353 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-10-24 14:00:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 14:00:35,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:00:35,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:00:35,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:00:35,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:00:35,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:00:35,415 INFO L87 Difference]: Start difference. First operand 11124 states and 12538 transitions. Second operand 5 states. [2018-10-24 14:00:37,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:37,424 INFO L93 Difference]: Finished difference Result 22894 states and 25865 transitions. [2018-10-24 14:00:37,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:00:37,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2018-10-24 14:00:37,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:37,438 INFO L225 Difference]: With dead ends: 22894 [2018-10-24 14:00:37,438 INFO L226 Difference]: Without dead ends: 11772 [2018-10-24 14:00:37,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 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 14:00:37,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11772 states. [2018-10-24 14:00:37,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11772 to 10845. [2018-10-24 14:00:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10845 states. [2018-10-24 14:00:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10845 states to 10845 states and 12152 transitions. [2018-10-24 14:00:37,577 INFO L78 Accepts]: Start accepts. Automaton has 10845 states and 12152 transitions. Word has length 273 [2018-10-24 14:00:37,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:37,577 INFO L481 AbstractCegarLoop]: Abstraction has 10845 states and 12152 transitions. [2018-10-24 14:00:37,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:00:37,578 INFO L276 IsEmpty]: Start isEmpty. Operand 10845 states and 12152 transitions. [2018-10-24 14:00:37,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-10-24 14:00:37,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:37,587 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:00:37,588 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:37,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:37,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1926828977, now seen corresponding path program 1 times [2018-10-24 14:00:37,588 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:37,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:37,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:37,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:37,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-10-24 14:00:37,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:00:37,978 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:00:37,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:38,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:00:38,258 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 14:00:38,916 WARN L179 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2018-10-24 14:00:39,531 WARN L179 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 19 [2018-10-24 14:00:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 95 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:00:40,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:00:40,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2018-10-24 14:00:40,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:00:40,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:00:40,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:00:40,584 INFO L87 Difference]: Start difference. First operand 10845 states and 12152 transitions. Second operand 7 states. [2018-10-24 14:00:40,821 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 14:00:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:47,315 INFO L93 Difference]: Finished difference Result 33161 states and 37017 transitions. [2018-10-24 14:00:47,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 14:00:47,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 292 [2018-10-24 14:00:47,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:47,342 INFO L225 Difference]: With dead ends: 33161 [2018-10-24 14:00:47,342 INFO L226 Difference]: Without dead ends: 22318 [2018-10-24 14:00:47,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-10-24 14:00:47,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22318 states. [2018-10-24 14:00:47,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22318 to 18230. [2018-10-24 14:00:47,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18230 states. [2018-10-24 14:00:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18230 states to 18230 states and 20194 transitions. [2018-10-24 14:00:47,600 INFO L78 Accepts]: Start accepts. Automaton has 18230 states and 20194 transitions. Word has length 292 [2018-10-24 14:00:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:47,601 INFO L481 AbstractCegarLoop]: Abstraction has 18230 states and 20194 transitions. [2018-10-24 14:00:47,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:00:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 18230 states and 20194 transitions. [2018-10-24 14:00:47,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-10-24 14:00:47,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:47,611 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 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] [2018-10-24 14:00:47,611 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:47,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:47,612 INFO L82 PathProgramCache]: Analyzing trace with hash -322464146, now seen corresponding path program 1 times [2018-10-24 14:00:47,612 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:47,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:47,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:47,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:47,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:48,239 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 12 [2018-10-24 14:00:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 17 proven. 141 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-24 14:00:48,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:00:48,371 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:00:48,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:48,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:00:48,846 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 483 DAG size of output: 28 [2018-10-24 14:00:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 17 proven. 141 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-24 14:00:49,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:00:49,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2018-10-24 14:00:49,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:00:49,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:00:49,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:00:49,195 INFO L87 Difference]: Start difference. First operand 18230 states and 20194 transitions. Second operand 7 states. [2018-10-24 14:00:53,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:53,898 INFO L93 Difference]: Finished difference Result 42386 states and 46842 transitions. [2018-10-24 14:00:53,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 14:00:53,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2018-10-24 14:00:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:53,914 INFO L225 Difference]: With dead ends: 42386 [2018-10-24 14:00:53,915 INFO L226 Difference]: Without dead ends: 15464 [2018-10-24 14:00:53,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 298 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:00:53,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15464 states. [2018-10-24 14:00:54,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15464 to 7754. [2018-10-24 14:00:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7754 states. [2018-10-24 14:00:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7754 states to 7754 states and 8578 transitions. [2018-10-24 14:00:54,056 INFO L78 Accepts]: Start accepts. Automaton has 7754 states and 8578 transitions. Word has length 300 [2018-10-24 14:00:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:54,056 INFO L481 AbstractCegarLoop]: Abstraction has 7754 states and 8578 transitions. [2018-10-24 14:00:54,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:00:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 7754 states and 8578 transitions. [2018-10-24 14:00:54,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-24 14:00:54,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:54,064 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 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 14:00:54,064 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:54,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:54,064 INFO L82 PathProgramCache]: Analyzing trace with hash -788140, now seen corresponding path program 1 times [2018-10-24 14:00:54,065 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:54,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:54,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:54,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:54,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 14:00:54,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:00:54,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:00:54,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:00:54,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:00:54,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:00:54,558 INFO L87 Difference]: Start difference. First operand 7754 states and 8578 transitions. Second operand 5 states. [2018-10-24 14:00:56,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:56,649 INFO L93 Difference]: Finished difference Result 20337 states and 22505 transitions. [2018-10-24 14:00:56,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:00:56,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2018-10-24 14:00:56,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:56,661 INFO L225 Difference]: With dead ends: 20337 [2018-10-24 14:00:56,661 INFO L226 Difference]: Without dead ends: 12770 [2018-10-24 14:00:56,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:00:56,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12770 states. [2018-10-24 14:00:56,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12770 to 9976. [2018-10-24 14:00:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9976 states. [2018-10-24 14:00:56,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9976 states to 9976 states and 10817 transitions. [2018-10-24 14:00:56,795 INFO L78 Accepts]: Start accepts. Automaton has 9976 states and 10817 transitions. Word has length 306 [2018-10-24 14:00:56,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:56,795 INFO L481 AbstractCegarLoop]: Abstraction has 9976 states and 10817 transitions. [2018-10-24 14:00:56,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:00:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 9976 states and 10817 transitions. [2018-10-24 14:00:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-10-24 14:00:56,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:56,802 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:00:56,802 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:56,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:56,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1650794451, now seen corresponding path program 1 times [2018-10-24 14:00:56,802 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:56,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:56,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:56,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:56,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:57,014 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-10-24 14:00:57,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:00:57,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:00:57,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:00:57,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:00:57,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:00:57,016 INFO L87 Difference]: Start difference. First operand 9976 states and 10817 transitions. Second operand 3 states. [2018-10-24 14:00:58,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:58,232 INFO L93 Difference]: Finished difference Result 20519 states and 22253 transitions. [2018-10-24 14:00:58,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:00:58,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 315 [2018-10-24 14:00:58,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:58,242 INFO L225 Difference]: With dead ends: 20519 [2018-10-24 14:00:58,242 INFO L226 Difference]: Without dead ends: 10730 [2018-10-24 14:00:58,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:00:58,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10730 states. [2018-10-24 14:00:58,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10730 to 10136. [2018-10-24 14:00:58,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10136 states. [2018-10-24 14:00:58,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10136 states to 10136 states and 10953 transitions. [2018-10-24 14:00:58,346 INFO L78 Accepts]: Start accepts. Automaton has 10136 states and 10953 transitions. Word has length 315 [2018-10-24 14:00:58,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:58,346 INFO L481 AbstractCegarLoop]: Abstraction has 10136 states and 10953 transitions. [2018-10-24 14:00:58,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:00:58,347 INFO L276 IsEmpty]: Start isEmpty. Operand 10136 states and 10953 transitions. [2018-10-24 14:00:58,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-24 14:00:58,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:58,351 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:00:58,351 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:58,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:58,351 INFO L82 PathProgramCache]: Analyzing trace with hash 331991605, now seen corresponding path program 1 times [2018-10-24 14:00:58,352 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:58,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:58,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:58,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:58,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:58,790 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 14:00:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 87 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:00:59,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:00:59,394 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 [2018-10-24 14:00:59,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:59,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:01:00,020 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 14:01:00,564 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 22 [2018-10-24 14:01:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 116 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:01:01,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:01:01,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2018-10-24 14:01:01,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 14:01:01,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 14:01:01,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:01:01,066 INFO L87 Difference]: Start difference. First operand 10136 states and 10953 transitions. Second operand 12 states. [2018-10-24 14:01:07,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:01:07,157 INFO L93 Difference]: Finished difference Result 21201 states and 22880 transitions. [2018-10-24 14:01:07,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 14:01:07,157 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 342 [2018-10-24 14:01:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:01:07,167 INFO L225 Difference]: With dead ends: 21201 [2018-10-24 14:01:07,167 INFO L226 Difference]: Without dead ends: 11250 [2018-10-24 14:01:07,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 338 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=207, Invalid=443, Unknown=0, NotChecked=0, Total=650 [2018-10-24 14:01:07,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11250 states. [2018-10-24 14:01:07,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11250 to 8638. [2018-10-24 14:01:07,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8638 states. [2018-10-24 14:01:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8638 states to 8638 states and 9258 transitions. [2018-10-24 14:01:07,281 INFO L78 Accepts]: Start accepts. Automaton has 8638 states and 9258 transitions. Word has length 342 [2018-10-24 14:01:07,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:01:07,281 INFO L481 AbstractCegarLoop]: Abstraction has 8638 states and 9258 transitions. [2018-10-24 14:01:07,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 14:01:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 8638 states and 9258 transitions. [2018-10-24 14:01:07,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-10-24 14:01:07,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:01:07,287 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:01:07,287 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:01:07,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:01:07,288 INFO L82 PathProgramCache]: Analyzing trace with hash -2023605052, now seen corresponding path program 1 times [2018-10-24 14:01:07,288 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:01:07,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:01:07,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:07,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:01:07,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:01:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-10-24 14:01:07,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:01:07,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:01:07,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:01:07,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:01:07,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:01:07,784 INFO L87 Difference]: Start difference. First operand 8638 states and 9258 transitions. Second operand 5 states. [2018-10-24 14:01:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:01:09,781 INFO L93 Difference]: Finished difference Result 22764 states and 24367 transitions. [2018-10-24 14:01:09,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:01:09,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 351 [2018-10-24 14:01:09,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:01:09,792 INFO L225 Difference]: With dead ends: 22764 [2018-10-24 14:01:09,793 INFO L226 Difference]: Without dead ends: 11521 [2018-10-24 14:01:09,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:01:09,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11521 states. [2018-10-24 14:01:09,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11521 to 10036. [2018-10-24 14:01:09,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10036 states. [2018-10-24 14:01:09,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10036 states to 10036 states and 10629 transitions. [2018-10-24 14:01:09,901 INFO L78 Accepts]: Start accepts. Automaton has 10036 states and 10629 transitions. Word has length 351 [2018-10-24 14:01:09,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:01:09,901 INFO L481 AbstractCegarLoop]: Abstraction has 10036 states and 10629 transitions. [2018-10-24 14:01:09,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:01:09,902 INFO L276 IsEmpty]: Start isEmpty. Operand 10036 states and 10629 transitions. [2018-10-24 14:01:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-10-24 14:01:09,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:01:09,909 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:01:09,909 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:01:09,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:01:09,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1483352725, now seen corresponding path program 1 times [2018-10-24 14:01:09,910 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:01:09,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:01:09,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:09,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:01:09,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:01:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 88 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:01:10,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:01:10,433 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 [2018-10-24 14:01:10,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:01:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:01:10,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:01:13,758 WARN L179 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2018-10-24 14:01:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 88 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:01:14,811 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:01:14,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-24 14:01:14,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 14:01:14,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 14:01:14,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=41, Unknown=2, NotChecked=0, Total=72 [2018-10-24 14:01:14,813 INFO L87 Difference]: Start difference. First operand 10036 states and 10629 transitions. Second operand 9 states. [2018-10-24 14:01:16,186 WARN L179 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 20 Received shutdown request... [2018-10-24 14:03:35,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 14:03:35,551 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:03:35,557 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:03:35,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:03:35 BoogieIcfgContainer [2018-10-24 14:03:35,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:03:35,558 INFO L168 Benchmark]: Toolchain (without parser) took 245200.82 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 291.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:03:35,559 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:03:35,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 901.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:03:35,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 307.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -828.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-10-24 14:03:35,561 INFO L168 Benchmark]: Boogie Preprocessor took 136.37 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:03:35,561 INFO L168 Benchmark]: RCFGBuilder took 4878.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 194.4 MB). Peak memory consumption was 194.4 MB. Max. memory is 7.1 GB. [2018-10-24 14:03:35,562 INFO L168 Benchmark]: TraceAbstraction took 238972.82 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -911.8 MB). Peak memory consumption was 122.6 MB. Max. memory is 7.1 GB. [2018-10-24 14:03:35,567 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 901.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 307.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -828.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.37 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4878.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 194.4 MB). Peak memory consumption was 194.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238972.82 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -911.8 MB). Peak memory consumption was 122.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 27). Cancelled while BasicCegarLoop was constructing difference of abstraction (10036states) and FLOYD_HOARE automaton (currently 10 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (10249 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 284 locations, 1 error locations. TIMEOUT Result, 238.9s OverallTime, 19 OverallIterations, 4 TraceHistogramMax, 216.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5222 SDtfs, 15786 SDslu, 2808 SDs, 0 SdLazy, 33360 SolverSat, 4812 SolverUnsat, 178 SolverUnknown, 0 SolverNotchecked, 202.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1867 GetRequests, 1761 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 13.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18230occurred in iteration=13, 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: 2.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 27725 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 16.9s InterpolantComputationTime, 6095 NumberOfCodeBlocks, 6095 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 6070 ConstructedInterpolants, 587 QuantifiedInterpolants, 14438419 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2419 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 25 InterpolantComputations, 13 PerfectInterpolantSequences, 2355/3707 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown