java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label37_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:09:00,544 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:09:00,546 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:09:00,563 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:09:00,563 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:09:00,564 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:09:00,566 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:09:00,568 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:09:00,571 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:09:00,572 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:09:00,574 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:09:00,574 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:09:00,576 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:09:00,582 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:09:00,583 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:09:00,584 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:09:00,588 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:09:00,590 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:09:00,595 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:09:00,596 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:09:00,599 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:09:00,601 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:09:00,604 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:09:00,604 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:09:00,604 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:09:00,607 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:09:00,608 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:09:00,609 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:09:00,609 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:09:00,610 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:09:00,611 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:09:00,611 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:09:00,614 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:09:00,628 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:09:00,628 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:09:00,629 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:09:00,629 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:09:00,629 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:09:00,630 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:09:00,630 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:09:00,630 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:09:00,630 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:09:00,631 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:09:00,631 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:09:00,631 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:09:00,631 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:09:00,631 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:09:00,631 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:09:00,632 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:09:00,632 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:09:00,632 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:09:00,632 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:09:00,632 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:09:00,633 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:09:00,633 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:09:00,633 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:09:00,633 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:09:00,633 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:09:00,634 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:09:00,634 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:09:00,634 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:09:00,691 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:09:00,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:09:00,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:09:00,710 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:09:00,711 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:09:00,711 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label37_false-unreach-call.c [2018-10-26 19:09:00,769 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4dc6f97b1/565fc192e6144cfab7e5f366b836c9ac/FLAGb86fef1ed [2018-10-26 19:09:01,533 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:09:01,534 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label37_false-unreach-call.c [2018-10-26 19:09:01,569 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4dc6f97b1/565fc192e6144cfab7e5f366b836c9ac/FLAGb86fef1ed [2018-10-26 19:09:01,586 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4dc6f97b1/565fc192e6144cfab7e5f366b836c9ac [2018-10-26 19:09:01,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:09:01,600 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:09:01,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:09:01,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:09:01,606 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:09:01,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:09:01" (1/1) ... [2018-10-26 19:09:01,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:01, skipping insertion in model container [2018-10-26 19:09:01,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:09:01" (1/1) ... [2018-10-26 19:09:01,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:09:01,762 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:09:03,134 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:09:03,139 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:09:03,760 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:09:03,795 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:09:03,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:03 WrapperNode [2018-10-26 19:09:03,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:09:03,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:09:03,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:09:03,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:09:03,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:03" (1/1) ... [2018-10-26 19:09:03,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:03" (1/1) ... [2018-10-26 19:09:04,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:09:04,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:09:04,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:09:04,443 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:09:04,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:03" (1/1) ... [2018-10-26 19:09:04,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:03" (1/1) ... [2018-10-26 19:09:04,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:03" (1/1) ... [2018-10-26 19:09:04,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:03" (1/1) ... [2018-10-26 19:09:04,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:03" (1/1) ... [2018-10-26 19:09:04,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:03" (1/1) ... [2018-10-26 19:09:04,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:03" (1/1) ... [2018-10-26 19:09:04,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:09:04,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:09:04,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:09:04,774 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:09:04,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:09:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:09:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:09:04,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:09:13,551 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:09:13,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:09:13 BoogieIcfgContainer [2018-10-26 19:09:13,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:09:13,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:09:13,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:09:13,556 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:09:13,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:09:01" (1/3) ... [2018-10-26 19:09:13,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3490728e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:09:13, skipping insertion in model container [2018-10-26 19:09:13,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:03" (2/3) ... [2018-10-26 19:09:13,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3490728e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:09:13, skipping insertion in model container [2018-10-26 19:09:13,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:09:13" (3/3) ... [2018-10-26 19:09:13,560 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label37_false-unreach-call.c [2018-10-26 19:09:13,572 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:09:13,581 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:09:13,598 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:09:13,642 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:09:13,643 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:09:13,643 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:09:13,643 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:09:13,643 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:09:13,643 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:09:13,643 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:09:13,643 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:09:13,644 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:09:13,678 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-26 19:09:13,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 19:09:13,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:13,687 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:09:13,689 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:13,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:13,695 INFO L82 PathProgramCache]: Analyzing trace with hash 340357962, now seen corresponding path program 1 times [2018-10-26 19:09:13,697 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:13,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:13,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:13,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:13,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:14,055 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-26 19:09:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:09:14,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:09:14,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:09:14,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:09:14,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:09:14,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:14,084 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-26 19:09:27,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:09:27,356 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-26 19:09:27,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:09:27,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-10-26 19:09:27,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:09:27,401 INFO L225 Difference]: With dead ends: 3146 [2018-10-26 19:09:27,402 INFO L226 Difference]: Without dead ends: 2320 [2018-10-26 19:09:27,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:27,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-26 19:09:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-26 19:09:27,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-26 19:09:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4229 transitions. [2018-10-26 19:09:27,562 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4229 transitions. Word has length 14 [2018-10-26 19:09:27,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:09:27,563 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 4229 transitions. [2018-10-26 19:09:27,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:09:27,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4229 transitions. [2018-10-26 19:09:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-26 19:09:27,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:27,567 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:09:27,567 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:27,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:27,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1309216847, now seen corresponding path program 1 times [2018-10-26 19:09:27,568 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:27,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:27,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:27,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:27,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:09:27,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:09:27,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:09:27,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:09:27,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:09:27,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:27,840 INFO L87 Difference]: Start difference. First operand 2320 states and 4229 transitions. Second operand 4 states. [2018-10-26 19:09:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:09:38,830 INFO L93 Difference]: Finished difference Result 9150 states and 16788 transitions. [2018-10-26 19:09:38,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:09:38,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2018-10-26 19:09:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:09:38,866 INFO L225 Difference]: With dead ends: 9150 [2018-10-26 19:09:38,866 INFO L226 Difference]: Without dead ends: 6832 [2018-10-26 19:09:38,871 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 [2018-10-26 19:09:38,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-26 19:09:38,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-26 19:09:38,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-26 19:09:39,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 10629 transitions. [2018-10-26 19:09:39,009 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 10629 transitions. Word has length 90 [2018-10-26 19:09:39,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:09:39,010 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 10629 transitions. [2018-10-26 19:09:39,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:09:39,011 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 10629 transitions. [2018-10-26 19:09:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-26 19:09:39,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:39,017 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:09:39,018 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:39,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:39,018 INFO L82 PathProgramCache]: Analyzing trace with hash -251409824, now seen corresponding path program 1 times [2018-10-26 19:09:39,018 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:39,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:39,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:39,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:39,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:09:39,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:09:39,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:09:39,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:09:39,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:09:39,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:39,265 INFO L87 Difference]: Start difference. First operand 6832 states and 10629 transitions. Second operand 4 states. [2018-10-26 19:09:47,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:09:47,662 INFO L93 Difference]: Finished difference Result 27260 states and 42449 transitions. [2018-10-26 19:09:47,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:09:47,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2018-10-26 19:09:47,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:09:47,749 INFO L225 Difference]: With dead ends: 27260 [2018-10-26 19:09:47,750 INFO L226 Difference]: Without dead ends: 20430 [2018-10-26 19:09:47,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:47,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20430 states. [2018-10-26 19:09:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20430 to 13600. [2018-10-26 19:09:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13600 states. [2018-10-26 19:09:48,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13600 states to 13600 states and 19341 transitions. [2018-10-26 19:09:48,090 INFO L78 Accepts]: Start accepts. Automaton has 13600 states and 19341 transitions. Word has length 96 [2018-10-26 19:09:48,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:09:48,091 INFO L481 AbstractCegarLoop]: Abstraction has 13600 states and 19341 transitions. [2018-10-26 19:09:48,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:09:48,092 INFO L276 IsEmpty]: Start isEmpty. Operand 13600 states and 19341 transitions. [2018-10-26 19:09:48,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-26 19:09:48,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:48,098 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:09:48,098 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:48,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:48,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1742806893, now seen corresponding path program 1 times [2018-10-26 19:09:48,099 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:48,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:48,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:48,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:48,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:09:48,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:09:48,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:09:48,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:09:48,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:09:48,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:48,446 INFO L87 Difference]: Start difference. First operand 13600 states and 19341 transitions. Second operand 4 states. [2018-10-26 19:09:57,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:09:57,404 INFO L93 Difference]: Finished difference Result 52783 states and 74748 transitions. [2018-10-26 19:09:57,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:09:57,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2018-10-26 19:09:57,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:09:57,479 INFO L225 Difference]: With dead ends: 52783 [2018-10-26 19:09:57,480 INFO L226 Difference]: Without dead ends: 39185 [2018-10-26 19:09:57,500 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39185 states. [2018-10-26 19:09:57,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39185 to 26384. [2018-10-26 19:09:57,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26384 states. [2018-10-26 19:09:58,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26384 states to 26384 states and 33902 transitions. [2018-10-26 19:09:58,022 INFO L78 Accepts]: Start accepts. Automaton has 26384 states and 33902 transitions. Word has length 114 [2018-10-26 19:09:58,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:09:58,023 INFO L481 AbstractCegarLoop]: Abstraction has 26384 states and 33902 transitions. [2018-10-26 19:09:58,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:09:58,023 INFO L276 IsEmpty]: Start isEmpty. Operand 26384 states and 33902 transitions. [2018-10-26 19:09:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-26 19:09:58,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:58,031 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:09:58,031 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:58,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:58,032 INFO L82 PathProgramCache]: Analyzing trace with hash -882986230, now seen corresponding path program 1 times [2018-10-26 19:09:58,032 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:58,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:58,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:58,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:58,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:58,464 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:09:58,987 WARN L179 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-26 19:09:59,496 WARN L179 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2018-10-26 19:09:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:09:59,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:09:59,572 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:09:59,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:59,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:09:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:09:59,887 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:09:59,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-26 19:09:59,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:09:59,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:09:59,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:09:59,889 INFO L87 Difference]: Start difference. First operand 26384 states and 33902 transitions. Second operand 8 states. [2018-10-26 19:10:20,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:10:20,592 INFO L93 Difference]: Finished difference Result 79839 states and 102700 transitions. [2018-10-26 19:10:20,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:10:20,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 156 [2018-10-26 19:10:20,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:10:20,701 INFO L225 Difference]: With dead ends: 79839 [2018-10-26 19:10:20,701 INFO L226 Difference]: Without dead ends: 53457 [2018-10-26 19:10:20,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-10-26 19:10:20,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53457 states. [2018-10-26 19:10:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53457 to 52704. [2018-10-26 19:10:21,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52704 states. [2018-10-26 19:10:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52704 states to 52704 states and 65734 transitions. [2018-10-26 19:10:21,537 INFO L78 Accepts]: Start accepts. Automaton has 52704 states and 65734 transitions. Word has length 156 [2018-10-26 19:10:21,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:10:21,538 INFO L481 AbstractCegarLoop]: Abstraction has 52704 states and 65734 transitions. [2018-10-26 19:10:21,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 19:10:21,538 INFO L276 IsEmpty]: Start isEmpty. Operand 52704 states and 65734 transitions. [2018-10-26 19:10:21,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-26 19:10:21,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:21,549 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:10:21,550 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:21,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:21,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1392819578, now seen corresponding path program 1 times [2018-10-26 19:10:21,550 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:21,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:21,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:21,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:21,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:10:21,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:10:21,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:10:21,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:10:21,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:10:21,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:10:21,972 INFO L87 Difference]: Start difference. First operand 52704 states and 65734 transitions. Second operand 3 states. [2018-10-26 19:10:30,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:10:30,585 INFO L93 Difference]: Finished difference Result 106158 states and 132345 transitions. [2018-10-26 19:10:30,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:10:30,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2018-10-26 19:10:30,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:10:30,651 INFO L225 Difference]: With dead ends: 106158 [2018-10-26 19:10:30,651 INFO L226 Difference]: Without dead ends: 53456 [2018-10-26 19:10:30,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:10:30,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53456 states. [2018-10-26 19:10:31,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53456 to 53456. [2018-10-26 19:10:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53456 states. [2018-10-26 19:10:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53456 states to 53456 states and 64094 transitions. [2018-10-26 19:10:31,278 INFO L78 Accepts]: Start accepts. Automaton has 53456 states and 64094 transitions. Word has length 274 [2018-10-26 19:10:31,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:10:31,279 INFO L481 AbstractCegarLoop]: Abstraction has 53456 states and 64094 transitions. [2018-10-26 19:10:31,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:10:31,279 INFO L276 IsEmpty]: Start isEmpty. Operand 53456 states and 64094 transitions. [2018-10-26 19:10:31,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-10-26 19:10:31,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:31,307 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:10:31,307 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:31,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:31,308 INFO L82 PathProgramCache]: Analyzing trace with hash 711428642, now seen corresponding path program 1 times [2018-10-26 19:10:31,308 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:31,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:31,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:31,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:31,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:31,814 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-26 19:10:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 89 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:10:32,117 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:10:32,117 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:10:32,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:32,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:10:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:10:32,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:10:32,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-26 19:10:32,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:10:32,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:10:32,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:10:32,463 INFO L87 Difference]: Start difference. First operand 53456 states and 64094 transitions. Second operand 6 states. [2018-10-26 19:10:47,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:10:47,214 INFO L93 Difference]: Finished difference Result 131006 states and 153980 transitions. [2018-10-26 19:10:47,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:10:47,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 439 [2018-10-26 19:10:47,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:10:47,327 INFO L225 Difference]: With dead ends: 131006 [2018-10-26 19:10:47,327 INFO L226 Difference]: Without dead ends: 75293 [2018-10-26 19:10:47,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 440 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:10:47,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75293 states. [2018-10-26 19:10:48,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75293 to 54959. [2018-10-26 19:10:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54959 states. [2018-10-26 19:10:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54959 states to 54959 states and 63880 transitions. [2018-10-26 19:10:48,530 INFO L78 Accepts]: Start accepts. Automaton has 54959 states and 63880 transitions. Word has length 439 [2018-10-26 19:10:48,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:10:48,530 INFO L481 AbstractCegarLoop]: Abstraction has 54959 states and 63880 transitions. [2018-10-26 19:10:48,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:10:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand 54959 states and 63880 transitions. [2018-10-26 19:10:48,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2018-10-26 19:10:48,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:48,576 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:10:48,576 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:48,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:48,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1293834870, now seen corresponding path program 1 times [2018-10-26 19:10:48,577 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:48,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:48,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:48,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:48,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:49,248 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:10:49,632 WARN L179 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-26 19:10:50,306 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 303 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-26 19:10:50,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:10:50,307 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:10:50,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:50,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:10:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 225 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:10:51,386 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:10:51,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2018-10-26 19:10:51,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 19:10:51,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 19:10:51,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-10-26 19:10:51,388 INFO L87 Difference]: Start difference. First operand 54959 states and 63880 transitions. Second operand 11 states. [2018-10-26 19:11:12,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:12,400 INFO L93 Difference]: Finished difference Result 110669 states and 128517 transitions. [2018-10-26 19:11:12,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 19:11:12,403 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 589 [2018-10-26 19:11:12,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:12,474 INFO L225 Difference]: With dead ends: 110669 [2018-10-26 19:11:12,475 INFO L226 Difference]: Without dead ends: 55712 [2018-10-26 19:11:12,504 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 586 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2018-10-26 19:11:12,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55712 states. [2018-10-26 19:11:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55712 to 54959. [2018-10-26 19:11:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54959 states. [2018-10-26 19:11:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54959 states to 54959 states and 63600 transitions. [2018-10-26 19:11:12,978 INFO L78 Accepts]: Start accepts. Automaton has 54959 states and 63600 transitions. Word has length 589 [2018-10-26 19:11:12,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:12,978 INFO L481 AbstractCegarLoop]: Abstraction has 54959 states and 63600 transitions. [2018-10-26 19:11:12,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 19:11:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 54959 states and 63600 transitions. [2018-10-26 19:11:13,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2018-10-26 19:11:13,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:13,002 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:11:13,002 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:13,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:13,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1803929979, now seen corresponding path program 1 times [2018-10-26 19:11:13,003 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:13,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:13,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:13,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:13,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-26 19:11:13,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:11:13,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:11:13,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:11:13,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:11:13,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:13,602 INFO L87 Difference]: Start difference. First operand 54959 states and 63600 transitions. Second operand 4 states. [2018-10-26 19:11:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:21,979 INFO L93 Difference]: Finished difference Result 109916 states and 127198 transitions. [2018-10-26 19:11:21,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:11:21,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 595 [2018-10-26 19:11:21,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:22,035 INFO L225 Difference]: With dead ends: 109916 [2018-10-26 19:11:22,035 INFO L226 Difference]: Without dead ends: 54959 [2018-10-26 19:11:22,056 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54959 states. [2018-10-26 19:11:22,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54959 to 54959. [2018-10-26 19:11:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54959 states. [2018-10-26 19:11:22,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54959 states to 54959 states and 62563 transitions. [2018-10-26 19:11:22,475 INFO L78 Accepts]: Start accepts. Automaton has 54959 states and 62563 transitions. Word has length 595 [2018-10-26 19:11:22,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:22,475 INFO L481 AbstractCegarLoop]: Abstraction has 54959 states and 62563 transitions. [2018-10-26 19:11:22,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:11:22,476 INFO L276 IsEmpty]: Start isEmpty. Operand 54959 states and 62563 transitions. [2018-10-26 19:11:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2018-10-26 19:11:22,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:22,496 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:11:22,496 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:22,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:22,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1216200945, now seen corresponding path program 1 times [2018-10-26 19:11:22,497 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:22,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:22,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:22,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:22,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:23,342 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-26 19:11:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 342 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:11:24,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:11:24,143 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:11:24,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:24,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:11:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-26 19:11:25,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:11:25,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-26 19:11:25,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:11:25,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:11:25,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:11:25,832 INFO L87 Difference]: Start difference. First operand 54959 states and 62563 transitions. Second operand 6 states. [2018-10-26 19:11:48,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:48,082 INFO L93 Difference]: Finished difference Result 149771 states and 172892 transitions. [2018-10-26 19:11:48,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:11:48,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 599 [2018-10-26 19:11:48,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:48,196 INFO L225 Difference]: With dead ends: 149771 [2018-10-26 19:11:48,197 INFO L226 Difference]: Without dead ends: 94060 [2018-10-26 19:11:48,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:11:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94060 states. [2018-10-26 19:11:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94060 to 94060. [2018-10-26 19:11:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94060 states. [2018-10-26 19:11:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94060 states to 94060 states and 103170 transitions. [2018-10-26 19:11:49,266 INFO L78 Accepts]: Start accepts. Automaton has 94060 states and 103170 transitions. Word has length 599 [2018-10-26 19:11:49,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:49,267 INFO L481 AbstractCegarLoop]: Abstraction has 94060 states and 103170 transitions. [2018-10-26 19:11:49,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:11:49,267 INFO L276 IsEmpty]: Start isEmpty. Operand 94060 states and 103170 transitions. [2018-10-26 19:11:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2018-10-26 19:11:49,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:49,303 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:11:49,304 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:49,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:49,304 INFO L82 PathProgramCache]: Analyzing trace with hash -568979800, now seen corresponding path program 1 times [2018-10-26 19:11:49,304 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:49,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:49,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:49,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:49,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:49,996 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-10-26 19:11:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-26 19:11:50,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:11:50,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:11:50,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:11:50,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:11:50,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:50,304 INFO L87 Difference]: Start difference. First operand 94060 states and 103170 transitions. Second operand 4 states. [2018-10-26 19:11:58,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:58,524 INFO L93 Difference]: Finished difference Result 224214 states and 245034 transitions. [2018-10-26 19:11:58,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:11:58,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 609 [2018-10-26 19:11:58,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:58,660 INFO L225 Difference]: With dead ends: 224214 [2018-10-26 19:11:58,660 INFO L226 Difference]: Without dead ends: 122625 [2018-10-26 19:11:58,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:58,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122625 states. [2018-10-26 19:11:59,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122625 to 121121. [2018-10-26 19:11:59,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121121 states. [2018-10-26 19:11:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121121 states to 121121 states and 130885 transitions. [2018-10-26 19:11:59,670 INFO L78 Accepts]: Start accepts. Automaton has 121121 states and 130885 transitions. Word has length 609 [2018-10-26 19:11:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:59,671 INFO L481 AbstractCegarLoop]: Abstraction has 121121 states and 130885 transitions. [2018-10-26 19:11:59,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:11:59,671 INFO L276 IsEmpty]: Start isEmpty. Operand 121121 states and 130885 transitions. [2018-10-26 19:11:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2018-10-26 19:11:59,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:59,694 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:11:59,694 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:59,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:59,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1069367211, now seen corresponding path program 1 times [2018-10-26 19:11:59,695 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:59,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:59,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:59,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:59,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 341 proven. 52 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 19:12:01,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:12:01,497 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:12:01,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:01,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:12:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 297 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:12:02,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:12:02,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2018-10-26 19:12:02,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 19:12:02,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 19:12:02,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-10-26 19:12:02,398 INFO L87 Difference]: Start difference. First operand 121121 states and 130885 transitions. Second operand 12 states. [2018-10-26 19:12:26,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:26,294 INFO L93 Difference]: Finished difference Result 268680 states and 289613 transitions. [2018-10-26 19:12:26,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-26 19:12:26,295 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 627 [2018-10-26 19:12:26,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:26,455 INFO L225 Difference]: With dead ends: 268680 [2018-10-26 19:12:26,455 INFO L226 Difference]: Without dead ends: 133251 [2018-10-26 19:12:26,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 624 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2018-10-26 19:12:26,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133251 states. [2018-10-26 19:12:27,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133251 to 122603. [2018-10-26 19:12:27,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122603 states. [2018-10-26 19:12:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122603 states to 122603 states and 129822 transitions. [2018-10-26 19:12:27,607 INFO L78 Accepts]: Start accepts. Automaton has 122603 states and 129822 transitions. Word has length 627 [2018-10-26 19:12:27,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:27,608 INFO L481 AbstractCegarLoop]: Abstraction has 122603 states and 129822 transitions. [2018-10-26 19:12:27,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 19:12:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 122603 states and 129822 transitions. [2018-10-26 19:12:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2018-10-26 19:12:27,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:27,630 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:12:27,630 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:27,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:27,630 INFO L82 PathProgramCache]: Analyzing trace with hash -428591265, now seen corresponding path program 1 times [2018-10-26 19:12:27,631 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:27,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:27,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:27,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:27,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:28,268 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-26 19:12:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:12:29,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:12:29,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:12:29,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:12:29,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:12:29,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:12:29,254 INFO L87 Difference]: Start difference. First operand 122603 states and 129822 transitions. Second operand 4 states. [2018-10-26 19:12:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:38,581 INFO L93 Difference]: Finished difference Result 250468 states and 265005 transitions. [2018-10-26 19:12:38,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:12:38,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 631 [2018-10-26 19:12:38,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:38,695 INFO L225 Difference]: With dead ends: 250468 [2018-10-26 19:12:38,695 INFO L226 Difference]: Without dead ends: 126360 [2018-10-26 19:12:38,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:12:38,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126360 states. [2018-10-26 19:12:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126360 to 120344. [2018-10-26 19:12:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120344 states. [2018-10-26 19:12:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120344 states to 120344 states and 126323 transitions. [2018-10-26 19:12:39,704 INFO L78 Accepts]: Start accepts. Automaton has 120344 states and 126323 transitions. Word has length 631 [2018-10-26 19:12:39,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:39,705 INFO L481 AbstractCegarLoop]: Abstraction has 120344 states and 126323 transitions. [2018-10-26 19:12:39,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:12:39,705 INFO L276 IsEmpty]: Start isEmpty. Operand 120344 states and 126323 transitions. [2018-10-26 19:12:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2018-10-26 19:12:39,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:39,722 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:12:39,722 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:39,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:39,723 INFO L82 PathProgramCache]: Analyzing trace with hash -761895096, now seen corresponding path program 1 times [2018-10-26 19:12:39,723 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:39,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:39,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:39,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:39,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:40,536 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2018-10-26 19:12:40,881 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 12 [2018-10-26 19:12:41,232 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-10-26 19:12:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-10-26 19:12:42,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:12:42,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:12:42,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:12:42,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:12:42,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:12:42,360 INFO L87 Difference]: Start difference. First operand 120344 states and 126323 transitions. Second operand 6 states. Received shutdown request... [2018-10-26 19:12:52,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:12:52,984 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:12:52,989 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:12:52,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:12:52 BoogieIcfgContainer [2018-10-26 19:12:52,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:12:52,990 INFO L168 Benchmark]: Toolchain (without parser) took 231391.45 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -202.2 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-26 19:12:52,991 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:12:52,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2195.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:12:52,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 644.95 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 815.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:12:52,993 INFO L168 Benchmark]: Boogie Preprocessor took 330.27 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:12:52,994 INFO L168 Benchmark]: RCFGBuilder took 8778.65 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 216.0 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -161.4 MB). Peak memory consumption was 616.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:12:52,995 INFO L168 Benchmark]: TraceAbstraction took 219436.53 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 714.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-26 19:12:53,000 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2195.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 644.95 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 815.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 330.27 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8778.65 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 216.0 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -161.4 MB). Peak memory consumption was 616.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219436.53 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 714.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 51). Cancelled while BasicCegarLoop was constructing difference of abstraction (120344states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (136820 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 219.3s OverallTime, 14 OverallIterations, 4 TraceHistogramMax, 190.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8876 SDtfs, 53615 SDslu, 1900 SDs, 0 SdLazy, 103272 SolverSat, 19608 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 154.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2518 GetRequests, 2422 SyntacticMatches, 26 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122603occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 59639 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 7889 NumberOfCodeBlocks, 7889 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 7870 ConstructedInterpolants, 0 QuantifiedInterpolants, 25004145 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2919 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 19 InterpolantComputations, 11 PerfectInterpolantSequences, 3846/4155 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown