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/Problem19_label59_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:48:07,577 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:48:07,581 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:48:07,597 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:48:07,598 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:48:07,599 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:48:07,600 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:48:07,602 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:48:07,604 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:48:07,605 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:48:07,606 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:48:07,606 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:48:07,607 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:48:07,608 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:48:07,609 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:48:07,610 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:48:07,611 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:48:07,613 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:48:07,615 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:48:07,617 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:48:07,618 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:48:07,619 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:48:07,621 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:48:07,622 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:48:07,622 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:48:07,623 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:48:07,624 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:48:07,625 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:48:07,626 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:48:07,627 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:48:07,627 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:48:07,628 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 14:48:07,628 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 14:48:07,629 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 14:48:07,630 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 14:48:07,631 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 14:48:07,631 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:48:07,646 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:48:07,646 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:48:07,647 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:48:07,647 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:48:07,651 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:48:07,651 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:48:07,651 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:48:07,651 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:48:07,652 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:48:07,652 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:48:07,652 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:48:07,652 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:48:07,652 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:48:07,653 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:48:07,653 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:48:07,653 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:48:07,653 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:48:07,653 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:48:07,654 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:48:07,654 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:48:07,654 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:48:07,654 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:48:07,654 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:48:07,654 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:48:07,655 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:48:07,655 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:48:07,655 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:48:07,655 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:48:07,711 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:48:07,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:48:07,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:48:07,734 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:48:07,734 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:48:07,735 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c [2018-10-24 14:48:07,791 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c86527ed0/db04341e65fe4a03816bf0daacaa595e/FLAGf73f7fd91 [2018-10-24 14:48:08,797 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:48:08,799 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c [2018-10-24 14:48:08,847 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c86527ed0/db04341e65fe4a03816bf0daacaa595e/FLAGf73f7fd91 [2018-10-24 14:48:08,867 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c86527ed0/db04341e65fe4a03816bf0daacaa595e [2018-10-24 14:48:08,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:48:08,884 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:48:08,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:48:08,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:48:08,892 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:48:08,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:48:08" (1/1) ... [2018-10-24 14:48:08,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f32220e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:48:08, skipping insertion in model container [2018-10-24 14:48:08,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:48:08" (1/1) ... [2018-10-24 14:48:08,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:48:09,157 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:48:11,257 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:48:11,264 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:48:12,412 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:48:12,466 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:48:12,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:48:12 WrapperNode [2018-10-24 14:48:12,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:48:12,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:48:12,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:48:12,469 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:48:12,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:48:12" (1/1) ... [2018-10-24 14:48:12,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:48:12" (1/1) ... [2018-10-24 14:48:13,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:48:13,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:48:13,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:48:13,715 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:48:13,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:48:12" (1/1) ... [2018-10-24 14:48:13,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:48:12" (1/1) ... [2018-10-24 14:48:13,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:48:12" (1/1) ... [2018-10-24 14:48:13,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:48:12" (1/1) ... [2018-10-24 14:48:14,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:48:12" (1/1) ... [2018-10-24 14:48:14,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:48:12" (1/1) ... [2018-10-24 14:48:14,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:48:12" (1/1) ... [2018-10-24 14:48:14,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:48:14,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:48:14,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:48:14,444 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:48:14,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:48:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:48:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:48:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:48:14,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:48:32,403 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:48:32,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:48:32 BoogieIcfgContainer [2018-10-24 14:48:32,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:48:32,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:48:32,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:48:32,409 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:48:32,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:48:08" (1/3) ... [2018-10-24 14:48:32,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d55561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:48:32, skipping insertion in model container [2018-10-24 14:48:32,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:48:12" (2/3) ... [2018-10-24 14:48:32,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d55561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:48:32, skipping insertion in model container [2018-10-24 14:48:32,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:48:32" (3/3) ... [2018-10-24 14:48:32,413 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label59_false-unreach-call.c [2018-10-24 14:48:32,423 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:48:32,434 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:48:32,451 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:48:32,499 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:48:32,500 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:48:32,500 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:48:32,501 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:48:32,501 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:48:32,501 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:48:32,501 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:48:32,501 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:48:32,501 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:48:32,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 14:48:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-24 14:48:32,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:48:32,581 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:48:32,584 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:48:32,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:48:32,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1580163962, now seen corresponding path program 1 times [2018-10-24 14:48:32,593 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:48:32,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:48:32,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:32,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:48:32,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:48:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:48:32,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:48:32,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:48:32,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:48:32,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:48:32,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:33,001 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 14:48:58,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:48:58,408 INFO L93 Difference]: Finished difference Result 6417 states and 12259 transitions. [2018-10-24 14:48:58,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:48:58,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-10-24 14:48:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:48:58,468 INFO L225 Difference]: With dead ends: 6417 [2018-10-24 14:48:58,469 INFO L226 Difference]: Without dead ends: 4661 [2018-10-24 14:48:58,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:58,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2018-10-24 14:48:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 4580. [2018-10-24 14:48:58,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4580 states. [2018-10-24 14:48:58,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 7862 transitions. [2018-10-24 14:48:58,700 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 7862 transitions. Word has length 26 [2018-10-24 14:48:58,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:48:58,700 INFO L481 AbstractCegarLoop]: Abstraction has 4580 states and 7862 transitions. [2018-10-24 14:48:58,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:48:58,701 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 7862 transitions. [2018-10-24 14:48:58,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-24 14:48:58,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:48:58,707 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:48:58,707 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:48:58,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:48:58,708 INFO L82 PathProgramCache]: Analyzing trace with hash 434309037, now seen corresponding path program 1 times [2018-10-24 14:48:58,709 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:48:58,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:48:58,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:58,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:48:58,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:48:59,098 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 14:48:59,127 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:48:59,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:48:59,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:48:59,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:48:59,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:48:59,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:59,132 INFO L87 Difference]: Start difference. First operand 4580 states and 7862 transitions. Second operand 4 states. [2018-10-24 14:49:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:49:20,309 INFO L93 Difference]: Finished difference Result 17614 states and 30529 transitions. [2018-10-24 14:49:20,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:49:20,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-10-24 14:49:20,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:49:20,373 INFO L225 Difference]: With dead ends: 17614 [2018-10-24 14:49:20,374 INFO L226 Difference]: Without dead ends: 13036 [2018-10-24 14:49:20,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:49:20,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13036 states. [2018-10-24 14:49:20,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13036 to 8676. [2018-10-24 14:49:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8676 states. [2018-10-24 14:49:20,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8676 states to 8676 states and 12924 transitions. [2018-10-24 14:49:20,576 INFO L78 Accepts]: Start accepts. Automaton has 8676 states and 12924 transitions. Word has length 99 [2018-10-24 14:49:20,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:49:20,577 INFO L481 AbstractCegarLoop]: Abstraction has 8676 states and 12924 transitions. [2018-10-24 14:49:20,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:49:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand 8676 states and 12924 transitions. [2018-10-24 14:49:20,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-24 14:49:20,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:49:20,582 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:49:20,582 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:49:20,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:49:20,582 INFO L82 PathProgramCache]: Analyzing trace with hash -933456329, now seen corresponding path program 1 times [2018-10-24 14:49:20,583 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:49:20,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:49:20,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:20,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:49:20,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:49:20,934 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 14:49:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:49:20,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:49:20,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:49:20,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:49:20,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:49:20,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:49:20,960 INFO L87 Difference]: Start difference. First operand 8676 states and 12924 transitions. Second operand 4 states. [2018-10-24 14:49:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:49:43,762 INFO L93 Difference]: Finished difference Result 33963 states and 50758 transitions. [2018-10-24 14:49:43,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:49:43,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2018-10-24 14:49:43,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:49:43,838 INFO L225 Difference]: With dead ends: 33963 [2018-10-24 14:49:43,838 INFO L226 Difference]: Without dead ends: 25289 [2018-10-24 14:49:43,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:49:43,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25289 states. [2018-10-24 14:49:44,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25289 to 16867. [2018-10-24 14:49:44,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16867 states. [2018-10-24 14:49:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16867 states to 16867 states and 24055 transitions. [2018-10-24 14:49:44,171 INFO L78 Accepts]: Start accepts. Automaton has 16867 states and 24055 transitions. Word has length 109 [2018-10-24 14:49:44,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:49:44,172 INFO L481 AbstractCegarLoop]: Abstraction has 16867 states and 24055 transitions. [2018-10-24 14:49:44,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:49:44,172 INFO L276 IsEmpty]: Start isEmpty. Operand 16867 states and 24055 transitions. [2018-10-24 14:49:44,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-24 14:49:44,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:49:44,175 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:49:44,175 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:49:44,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:49:44,176 INFO L82 PathProgramCache]: Analyzing trace with hash -369729876, now seen corresponding path program 1 times [2018-10-24 14:49:44,176 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:49:44,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:49:44,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:44,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:49:44,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:49:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:49:44,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:49:44,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:49:44,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:49:44,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:49:44,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:49:44,443 INFO L87 Difference]: Start difference. First operand 16867 states and 24055 transitions. Second operand 4 states. [2018-10-24 14:50:05,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:50:05,586 INFO L93 Difference]: Finished difference Result 65168 states and 93535 transitions. [2018-10-24 14:50:05,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:50:05,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2018-10-24 14:50:05,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:50:05,683 INFO L225 Difference]: With dead ends: 65168 [2018-10-24 14:50:05,683 INFO L226 Difference]: Without dead ends: 48303 [2018-10-24 14:50:05,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:50:05,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48303 states. [2018-10-24 14:50:06,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48303 to 48299. [2018-10-24 14:50:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48299 states. [2018-10-24 14:50:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48299 states to 48299 states and 62693 transitions. [2018-10-24 14:50:06,341 INFO L78 Accepts]: Start accepts. Automaton has 48299 states and 62693 transitions. Word has length 165 [2018-10-24 14:50:06,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:50:06,341 INFO L481 AbstractCegarLoop]: Abstraction has 48299 states and 62693 transitions. [2018-10-24 14:50:06,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:50:06,342 INFO L276 IsEmpty]: Start isEmpty. Operand 48299 states and 62693 transitions. [2018-10-24 14:50:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-24 14:50:06,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:50:06,347 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:50:06,347 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:50:06,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:50:06,347 INFO L82 PathProgramCache]: Analyzing trace with hash 93489907, now seen corresponding path program 1 times [2018-10-24 14:50:06,348 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:50:06,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:50:06,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:06,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:50:06,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:50:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:50:06,730 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:50:06,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:50:06,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:50:06,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:50:06,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:50:06,732 INFO L87 Difference]: Start difference. First operand 48299 states and 62693 transitions. Second operand 4 states. [2018-10-24 14:50:27,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:50:27,038 INFO L93 Difference]: Finished difference Result 174574 states and 225608 transitions. [2018-10-24 14:50:27,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:50:27,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 185 [2018-10-24 14:50:27,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:50:27,265 INFO L225 Difference]: With dead ends: 174574 [2018-10-24 14:50:27,265 INFO L226 Difference]: Without dead ends: 126277 [2018-10-24 14:50:27,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:50:27,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126277 states. [2018-10-24 14:50:29,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126277 to 126229. [2018-10-24 14:50:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126229 states. [2018-10-24 14:50:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126229 states to 126229 states and 149661 transitions. [2018-10-24 14:50:29,242 INFO L78 Accepts]: Start accepts. Automaton has 126229 states and 149661 transitions. Word has length 185 [2018-10-24 14:50:29,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:50:29,243 INFO L481 AbstractCegarLoop]: Abstraction has 126229 states and 149661 transitions. [2018-10-24 14:50:29,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:50:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 126229 states and 149661 transitions. [2018-10-24 14:50:29,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-24 14:50:29,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:50:29,249 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:50:29,250 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:50:29,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:50:29,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1650992551, now seen corresponding path program 1 times [2018-10-24 14:50:29,250 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:50:29,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:50:29,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:29,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:50:29,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:50:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:50:29,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:50:29,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:50:29,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:50:29,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:50:29,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:50:29,515 INFO L87 Difference]: Start difference. First operand 126229 states and 149661 transitions. Second operand 3 states. [2018-10-24 14:50:44,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:50:44,653 INFO L93 Difference]: Finished difference Result 296173 states and 352142 transitions. [2018-10-24 14:50:44,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:50:44,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2018-10-24 14:50:44,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:50:44,898 INFO L225 Difference]: With dead ends: 296173 [2018-10-24 14:50:44,899 INFO L226 Difference]: Without dead ends: 167207 [2018-10-24 14:50:44,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:50:45,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167207 states. [2018-10-24 14:50:46,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167207 to 165836. [2018-10-24 14:50:46,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165836 states. [2018-10-24 14:50:46,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165836 states to 165836 states and 191033 transitions. [2018-10-24 14:50:46,547 INFO L78 Accepts]: Start accepts. Automaton has 165836 states and 191033 transitions. Word has length 234 [2018-10-24 14:50:46,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:50:46,547 INFO L481 AbstractCegarLoop]: Abstraction has 165836 states and 191033 transitions. [2018-10-24 14:50:46,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:50:46,548 INFO L276 IsEmpty]: Start isEmpty. Operand 165836 states and 191033 transitions. [2018-10-24 14:50:46,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-10-24 14:50:46,557 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:50:46,558 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:50:46,558 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:50:46,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:50:46,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1649658732, now seen corresponding path program 1 times [2018-10-24 14:50:46,559 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:50:46,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:50:46,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:46,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:50:46,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:50:46,985 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 14:50:47,157 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-24 14:50:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:50:47,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:50:47,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:50:47,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:50:47,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:50:47,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:50:47,276 INFO L87 Difference]: Start difference. First operand 165836 states and 191033 transitions. Second operand 4 states. [2018-10-24 14:51:06,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:51:06,330 INFO L93 Difference]: Finished difference Result 441050 states and 509458 transitions. [2018-10-24 14:51:06,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:51:06,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 514 [2018-10-24 14:51:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:51:06,741 INFO L225 Difference]: With dead ends: 441050 [2018-10-24 14:51:06,742 INFO L226 Difference]: Without dead ends: 276582 [2018-10-24 14:51:06,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:51:07,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276582 states. [2018-10-24 14:51:10,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276582 to 230038. [2018-10-24 14:51:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230038 states. [2018-10-24 14:51:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230038 states to 230038 states and 263142 transitions. [2018-10-24 14:51:10,831 INFO L78 Accepts]: Start accepts. Automaton has 230038 states and 263142 transitions. Word has length 514 [2018-10-24 14:51:10,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:51:10,832 INFO L481 AbstractCegarLoop]: Abstraction has 230038 states and 263142 transitions. [2018-10-24 14:51:10,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:51:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 230038 states and 263142 transitions. [2018-10-24 14:51:10,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2018-10-24 14:51:10,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:51:10,887 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:51:10,888 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:51:10,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:51:10,888 INFO L82 PathProgramCache]: Analyzing trace with hash 555536538, now seen corresponding path program 1 times [2018-10-24 14:51:10,889 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:51:10,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:51:10,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:51:10,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:51:10,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:51:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:51:11,779 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:51:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 467 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-10-24 14:51:13,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:51:13,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:51:13,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:51:13,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:51:13,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:51:13,958 INFO L87 Difference]: Start difference. First operand 230038 states and 263142 transitions. Second operand 4 states. [2018-10-24 14:51:32,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:51:32,384 INFO L93 Difference]: Finished difference Result 457341 states and 523298 transitions. [2018-10-24 14:51:32,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:51:32,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 983 [2018-10-24 14:51:32,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:51:32,685 INFO L225 Difference]: With dead ends: 457341 [2018-10-24 14:51:32,685 INFO L226 Difference]: Without dead ends: 228671 [2018-10-24 14:51:32,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:51:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228671 states. [2018-10-24 14:51:35,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228671 to 217733. [2018-10-24 14:51:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217733 states. [2018-10-24 14:51:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217733 states to 217733 states and 237488 transitions. [2018-10-24 14:51:36,149 INFO L78 Accepts]: Start accepts. Automaton has 217733 states and 237488 transitions. Word has length 983 [2018-10-24 14:51:36,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:51:36,151 INFO L481 AbstractCegarLoop]: Abstraction has 217733 states and 237488 transitions. [2018-10-24 14:51:36,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:51:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand 217733 states and 237488 transitions. [2018-10-24 14:51:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2018-10-24 14:51:36,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:51:36,175 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:51:36,175 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:51:36,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:51:36,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1457271870, now seen corresponding path program 1 times [2018-10-24 14:51:36,176 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:51:36,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:51:36,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:51:36,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:51:36,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:51:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:51:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 509 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 14:51:44,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:51:44,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 14:51:44,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:51:44,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:51:44,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:51:44,178 INFO L87 Difference]: Start difference. First operand 217733 states and 237488 transitions. Second operand 6 states. Received shutdown request... [2018-10-24 14:51:54,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:51:54,396 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:51:54,403 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:51:54,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:51:54 BoogieIcfgContainer [2018-10-24 14:51:54,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:51:54,404 INFO L168 Benchmark]: Toolchain (without parser) took 225521.45 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 14:51:54,405 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:51:54,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3582.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. [2018-10-24 14:51:54,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 1246.12 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 874.0 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:51:54,413 INFO L168 Benchmark]: Boogie Preprocessor took 728.50 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 113.2 MB). Peak memory consumption was 113.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:51:54,413 INFO L168 Benchmark]: RCFGBuilder took 17961.05 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 291.5 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -405.0 MB). Peak memory consumption was 851.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:51:54,415 INFO L168 Benchmark]: TraceAbstraction took 201997.72 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.5 GB in the beginning and 3.0 GB in the end (delta: -568.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 14:51:54,420 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 3582.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1246.12 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 874.0 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 728.50 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 113.2 MB). Peak memory consumption was 113.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17961.05 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 291.5 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -405.0 MB). Peak memory consumption was 851.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201997.72 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.5 GB in the beginning and 3.0 GB in the end (delta: -568.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was constructing difference of abstraction (217733states) and FLOYD_HOARE automaton (currently 5 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (36075 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 201.9s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 175.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12663 SDtfs, 31064 SDslu, 2953 SDs, 0 SdLazy, 68498 SolverSat, 18351 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 145.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230038occurred in iteration=7, 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: 12.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 71768 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 3358 NumberOfCodeBlocks, 3358 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3349 ConstructedInterpolants, 0 QuantifiedInterpolants, 4786502 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 1750/1750 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown