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_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:08:03,641 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:08:03,643 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:08:03,655 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:08:03,655 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:08:03,657 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:08:03,658 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:08:03,660 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:08:03,662 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:08:03,663 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:08:03,664 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:08:03,664 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:08:03,665 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:08:03,666 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:08:03,667 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:08:03,668 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:08:03,669 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:08:03,671 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:08:03,673 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:08:03,675 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:08:03,676 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:08:03,678 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:08:03,680 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:08:03,681 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:08:03,681 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:08:03,682 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:08:03,683 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:08:03,684 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:08:03,685 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:08:03,686 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:08:03,687 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:08:03,688 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 17:08:03,691 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 17:08:03,707 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:08:03,707 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:08:03,708 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:08:03,708 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:08:03,709 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:08:03,709 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:08:03,709 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:08:03,710 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:08:03,710 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:08:03,710 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:08:03,710 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:08:03,710 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:08:03,711 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:08:03,711 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:08:03,711 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:08:03,711 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:08:03,712 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:08:03,712 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:08:03,712 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:08:03,712 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:08:03,712 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:08:03,716 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:08:03,716 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:08:03,716 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:08:03,716 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:08:03,716 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:08:03,717 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:08:03,717 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:08:03,777 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:08:03,790 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:08:03,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:08:03,796 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:08:03,796 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:08:03,797 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label40_true-unreach-call.c [2018-10-24 17:08:03,856 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c1d83f66b/7d00494d77654068bf1088229ba9dd74/FLAG5fb9315ac [2018-10-24 17:08:04,770 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:08:04,771 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label40_true-unreach-call.c [2018-10-24 17:08:04,812 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c1d83f66b/7d00494d77654068bf1088229ba9dd74/FLAG5fb9315ac [2018-10-24 17:08:04,827 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c1d83f66b/7d00494d77654068bf1088229ba9dd74 [2018-10-24 17:08:04,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:08:04,841 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:08:04,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:08:04,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:08:04,847 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:08:04,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:08:04" (1/1) ... [2018-10-24 17:08:04,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:08:04, skipping insertion in model container [2018-10-24 17:08:04,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:08:04" (1/1) ... [2018-10-24 17:08:04,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:08:05,102 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:08:07,074 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:08:07,080 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:08:08,133 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:08:08,188 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:08:08,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:08:08 WrapperNode [2018-10-24 17:08:08,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:08:08,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:08:08,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:08:08,191 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:08:08,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:08:08" (1/1) ... [2018-10-24 17:08:08,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:08:08" (1/1) ... [2018-10-24 17:08:09,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:08:09,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:08:09,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:08:09,358 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:08:09,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:08:08" (1/1) ... [2018-10-24 17:08:09,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:08:08" (1/1) ... [2018-10-24 17:08:09,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:08:08" (1/1) ... [2018-10-24 17:08:09,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:08:08" (1/1) ... [2018-10-24 17:08:09,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:08:08" (1/1) ... [2018-10-24 17:08:09,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:08:08" (1/1) ... [2018-10-24 17:08:09,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:08:08" (1/1) ... [2018-10-24 17:08:10,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:08:10,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:08:10,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:08:10,057 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:08:10,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:08:08" (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 17:08:10,127 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:08:10,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:08:10,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:08:27,482 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:08:27,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:08:27 BoogieIcfgContainer [2018-10-24 17:08:27,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:08:27,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:08:27,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:08:27,487 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:08:27,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:08:04" (1/3) ... [2018-10-24 17:08:27,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770e6e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:08:27, skipping insertion in model container [2018-10-24 17:08:27,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:08:08" (2/3) ... [2018-10-24 17:08:27,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770e6e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:08:27, skipping insertion in model container [2018-10-24 17:08:27,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:08:27" (3/3) ... [2018-10-24 17:08:27,491 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label40_true-unreach-call.c [2018-10-24 17:08:27,500 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:08:27,509 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:08:27,526 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:08:27,577 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:08:27,578 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:08:27,578 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:08:27,578 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:08:27,578 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:08:27,579 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:08:27,579 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:08:27,579 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:08:27,579 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:08:27,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:08:27,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-24 17:08:27,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:27,640 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:08:27,642 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:27,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:27,649 INFO L82 PathProgramCache]: Analyzing trace with hash 84973194, now seen corresponding path program 1 times [2018-10-24 17:08:27,651 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:27,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:27,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:27,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:27,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:28,157 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 17:08:28,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:08:28,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:08:28,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:08:28,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:08:28,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:28,188 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:08:54,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:08:54,707 INFO L93 Difference]: Finished difference Result 6321 states and 12079 transitions. [2018-10-24 17:08:54,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:08:54,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2018-10-24 17:08:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:08:54,776 INFO L225 Difference]: With dead ends: 6321 [2018-10-24 17:08:54,776 INFO L226 Difference]: Without dead ends: 4565 [2018-10-24 17:08:54,786 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 [2018-10-24 17:08:54,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4565 states. [2018-10-24 17:08:54,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4565 to 4560. [2018-10-24 17:08:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4560 states. [2018-10-24 17:08:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 7503 transitions. [2018-10-24 17:08:55,008 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 7503 transitions. Word has length 47 [2018-10-24 17:08:55,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:08:55,009 INFO L481 AbstractCegarLoop]: Abstraction has 4560 states and 7503 transitions. [2018-10-24 17:08:55,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:08:55,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 7503 transitions. [2018-10-24 17:08:55,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 17:08:55,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:55,021 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:08:55,021 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:55,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:55,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1978417967, now seen corresponding path program 1 times [2018-10-24 17:08:55,022 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:55,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:55,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:55,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:55,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:08:55,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:08:55,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:08:55,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:08:55,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:08:55,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:55,472 INFO L87 Difference]: Start difference. First operand 4560 states and 7503 transitions. Second operand 4 states. [2018-10-24 17:09:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:26,196 INFO L93 Difference]: Finished difference Result 17539 states and 29072 transitions. [2018-10-24 17:09:26,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:09:26,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2018-10-24 17:09:26,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:26,265 INFO L225 Difference]: With dead ends: 17539 [2018-10-24 17:09:26,265 INFO L226 Difference]: Without dead ends: 12981 [2018-10-24 17:09:26,274 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 17:09:26,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12981 states. [2018-10-24 17:09:26,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12981 to 8660. [2018-10-24 17:09:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8660 states. [2018-10-24 17:09:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 13864 transitions. [2018-10-24 17:09:26,468 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 13864 transitions. Word has length 117 [2018-10-24 17:09:26,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:26,469 INFO L481 AbstractCegarLoop]: Abstraction has 8660 states and 13864 transitions. [2018-10-24 17:09:26,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:09:26,469 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 13864 transitions. [2018-10-24 17:09:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 17:09:26,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:26,472 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:09:26,472 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:26,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:26,473 INFO L82 PathProgramCache]: Analyzing trace with hash -942819234, now seen corresponding path program 1 times [2018-10-24 17:09:26,473 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:26,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:26,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:26,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:26,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:26,841 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 17:09:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:09:26,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:09:26,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:09:26,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:09:26,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:09:26,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:09:26,881 INFO L87 Difference]: Start difference. First operand 8660 states and 13864 transitions. Second operand 4 states. [2018-10-24 17:09:48,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:48,871 INFO L93 Difference]: Finished difference Result 33825 states and 54421 transitions. [2018-10-24 17:09:48,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:09:48,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-10-24 17:09:48,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:48,947 INFO L225 Difference]: With dead ends: 33825 [2018-10-24 17:09:48,947 INFO L226 Difference]: Without dead ends: 25167 [2018-10-24 17:09:48,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:09:48,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25167 states. [2018-10-24 17:09:49,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25167 to 16872. [2018-10-24 17:09:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16872 states. [2018-10-24 17:09:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16872 states to 16872 states and 23661 transitions. [2018-10-24 17:09:49,333 INFO L78 Accepts]: Start accepts. Automaton has 16872 states and 23661 transitions. Word has length 139 [2018-10-24 17:09:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:49,334 INFO L481 AbstractCegarLoop]: Abstraction has 16872 states and 23661 transitions. [2018-10-24 17:09:49,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:09:49,336 INFO L276 IsEmpty]: Start isEmpty. Operand 16872 states and 23661 transitions. [2018-10-24 17:09:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-24 17:09:49,342 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:49,342 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:09:49,343 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:49,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:49,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1717913076, now seen corresponding path program 1 times [2018-10-24 17:09:49,343 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:49,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:49,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:49,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:49,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:09:49,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:09:49,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:09:49,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:09:49,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:09:49,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:09:49,716 INFO L87 Difference]: Start difference. First operand 16872 states and 23661 transitions. Second operand 4 states. [2018-10-24 17:10:10,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:10:10,721 INFO L93 Difference]: Finished difference Result 65437 states and 92309 transitions. [2018-10-24 17:10:10,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:10:10,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2018-10-24 17:10:10,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:10:10,828 INFO L225 Difference]: With dead ends: 65437 [2018-10-24 17:10:10,828 INFO L226 Difference]: Without dead ends: 48567 [2018-10-24 17:10:10,857 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 17:10:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48567 states. [2018-10-24 17:10:11,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48567 to 48556. [2018-10-24 17:10:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48556 states. [2018-10-24 17:10:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48556 states to 48556 states and 60402 transitions. [2018-10-24 17:10:11,493 INFO L78 Accepts]: Start accepts. Automaton has 48556 states and 60402 transitions. Word has length 164 [2018-10-24 17:10:11,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:10:11,494 INFO L481 AbstractCegarLoop]: Abstraction has 48556 states and 60402 transitions. [2018-10-24 17:10:11,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:10:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 48556 states and 60402 transitions. [2018-10-24 17:10:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-10-24 17:10:11,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:11,501 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:10:11,502 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:11,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:11,502 INFO L82 PathProgramCache]: Analyzing trace with hash -807048280, now seen corresponding path program 1 times [2018-10-24 17:10:11,502 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:11,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:11,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:11,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:11,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:12,072 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:10:12,484 WARN L179 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-24 17:10:12,824 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-24 17:10:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-24 17:10:13,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:10:13,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:10:13,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:10:13,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:10:13,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:10:13,459 INFO L87 Difference]: Start difference. First operand 48556 states and 60402 transitions. Second operand 7 states. [2018-10-24 17:10:43,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:10:43,826 INFO L93 Difference]: Finished difference Result 118982 states and 144120 transitions. [2018-10-24 17:10:43,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:10:43,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 475 [2018-10-24 17:10:43,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:10:43,919 INFO L225 Difference]: With dead ends: 118982 [2018-10-24 17:10:43,919 INFO L226 Difference]: Without dead ends: 70428 [2018-10-24 17:10:43,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:10:44,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70428 states. [2018-10-24 17:10:45,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70428 to 66324. [2018-10-24 17:10:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66324 states. [2018-10-24 17:10:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66324 states to 66324 states and 79036 transitions. [2018-10-24 17:10:45,246 INFO L78 Accepts]: Start accepts. Automaton has 66324 states and 79036 transitions. Word has length 475 [2018-10-24 17:10:45,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:10:45,247 INFO L481 AbstractCegarLoop]: Abstraction has 66324 states and 79036 transitions. [2018-10-24 17:10:45,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:10:45,247 INFO L276 IsEmpty]: Start isEmpty. Operand 66324 states and 79036 transitions. [2018-10-24 17:10:45,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2018-10-24 17:10:45,261 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:45,262 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:10:45,262 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:45,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:45,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1314290610, now seen corresponding path program 1 times [2018-10-24 17:10:45,263 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:45,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:45,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:45,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:45,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:45,724 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 17:10:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-10-24 17:10:45,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:10:45,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:10:45,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:10:45,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:10:45,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:45,854 INFO L87 Difference]: Start difference. First operand 66324 states and 79036 transitions. Second operand 4 states. [2018-10-24 17:11:05,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:11:05,798 INFO L93 Difference]: Finished difference Result 229808 states and 277722 transitions. [2018-10-24 17:11:05,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:11:05,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 503 [2018-10-24 17:11:05,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:11:06,009 INFO L225 Difference]: With dead ends: 229808 [2018-10-24 17:11:06,009 INFO L226 Difference]: Without dead ends: 163486 [2018-10-24 17:11:06,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 17:11:06,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163486 states. [2018-10-24 17:11:07,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163486 to 160600. [2018-10-24 17:11:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160600 states. [2018-10-24 17:11:07,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160600 states to 160600 states and 187473 transitions. [2018-10-24 17:11:07,889 INFO L78 Accepts]: Start accepts. Automaton has 160600 states and 187473 transitions. Word has length 503 [2018-10-24 17:11:07,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:11:07,890 INFO L481 AbstractCegarLoop]: Abstraction has 160600 states and 187473 transitions. [2018-10-24 17:11:07,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:11:07,890 INFO L276 IsEmpty]: Start isEmpty. Operand 160600 states and 187473 transitions. [2018-10-24 17:11:07,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2018-10-24 17:11:07,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:11:07,933 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:11:07,933 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:11:07,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:11:07,934 INFO L82 PathProgramCache]: Analyzing trace with hash -777559246, now seen corresponding path program 1 times [2018-10-24 17:11:07,934 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:11:07,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:11:07,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:07,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:07,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-10-24 17:11:09,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:11:09,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:11:09,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:11:09,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:11:09,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:11:09,853 INFO L87 Difference]: Start difference. First operand 160600 states and 187473 transitions. Second operand 4 states. [2018-10-24 17:11:28,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:11:28,865 INFO L93 Difference]: Finished difference Result 389502 states and 459227 transitions. [2018-10-24 17:11:28,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:11:28,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 751 [2018-10-24 17:11:28,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:11:29,125 INFO L225 Difference]: With dead ends: 389502 [2018-10-24 17:11:29,126 INFO L226 Difference]: Without dead ends: 230270 [2018-10-24 17:11:29,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 17:11:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230270 states. [2018-10-24 17:11:32,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230270 to 230259. [2018-10-24 17:11:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230259 states. [2018-10-24 17:11:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230259 states to 230259 states and 261185 transitions. [2018-10-24 17:11:32,306 INFO L78 Accepts]: Start accepts. Automaton has 230259 states and 261185 transitions. Word has length 751 [2018-10-24 17:11:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:11:32,306 INFO L481 AbstractCegarLoop]: Abstraction has 230259 states and 261185 transitions. [2018-10-24 17:11:32,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:11:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand 230259 states and 261185 transitions. [2018-10-24 17:11:32,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2018-10-24 17:11:32,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:11:32,386 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:11:32,386 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:11:32,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:11:32,387 INFO L82 PathProgramCache]: Analyzing trace with hash -962202982, now seen corresponding path program 1 times [2018-10-24 17:11:32,387 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:11:32,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:11:32,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:32,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:32,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 590 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:11:34,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:11:34,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:11:34,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:11:34,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:11:34,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:11:34,988 INFO L87 Difference]: Start difference. First operand 230259 states and 261185 transitions. Second operand 4 states. [2018-10-24 17:11:52,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:11:52,529 INFO L93 Difference]: Finished difference Result 459149 states and 520991 transitions. [2018-10-24 17:11:52,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:11:52,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1062 [2018-10-24 17:11:52,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:11:52,841 INFO L225 Difference]: With dead ends: 459149 [2018-10-24 17:11:52,841 INFO L226 Difference]: Without dead ends: 230258 [2018-10-24 17:11:52,966 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 17:11:54,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230258 states. [2018-10-24 17:11:57,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230258 to 220689. [2018-10-24 17:11:57,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220689 states. [2018-10-24 17:11:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220689 states to 220689 states and 240229 transitions. [2018-10-24 17:11:57,752 INFO L78 Accepts]: Start accepts. Automaton has 220689 states and 240229 transitions. Word has length 1062 [2018-10-24 17:11:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:11:57,753 INFO L481 AbstractCegarLoop]: Abstraction has 220689 states and 240229 transitions. [2018-10-24 17:11:57,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:11:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 220689 states and 240229 transitions. [2018-10-24 17:11:57,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2018-10-24 17:11:57,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:11:57,791 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:57,791 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:11:57,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:11:57,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1295666853, now seen corresponding path program 1 times [2018-10-24 17:11:57,792 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:11:57,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:11:57,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:57,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:57,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 17:12:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 826 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2018-10-24 17:12:04,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:12:04,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:12:04,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:12:04,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:12:04,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:12:04,587 INFO L87 Difference]: Start difference. First operand 220689 states and 240229 transitions. Second operand 4 states. [2018-10-24 17:12:04,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 17:12:04,588 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:12:04,594 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:12:04,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:12:04 BoogieIcfgContainer [2018-10-24 17:12:04,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:12:04,597 INFO L168 Benchmark]: Toolchain (without parser) took 239757.14 ms. Allocated memory was 1.5 GB in the beginning and 4.6 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 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 17:12:04,599 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 17:12:04,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3346.76 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: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:12:04,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 1167.24 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 876.1 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 17:12:04,601 INFO L168 Benchmark]: Boogie Preprocessor took 698.60 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: 97.7 MB). Peak memory consumption was 97.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:12:04,602 INFO L168 Benchmark]: RCFGBuilder took 17426.24 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 290.5 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -378.6 MB). Peak memory consumption was 841.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:12:04,603 INFO L168 Benchmark]: TraceAbstraction took 217111.50 ms. Allocated memory was 2.7 GB in the beginning and 4.6 GB in the end (delta: 1.9 GB). Free memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: -515.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 17:12:04,613 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 3346.76 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: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1167.24 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 876.1 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 698.60 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: 97.7 MB). Peak memory consumption was 97.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17426.24 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 290.5 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -378.6 MB). Peak memory consumption was 841.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217111.50 ms. Allocated memory was 2.7 GB in the beginning and 4.6 GB in the end (delta: 1.9 GB). Free memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: -515.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 154). Cancelled while BasicCegarLoop was constructing difference of abstraction (220689states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 217.0s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 188.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 13212 SDtfs, 34317 SDslu, 3279 SDs, 0 SdLazy, 76801 SolverSat, 19006 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 159.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230259occurred 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: 12.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 29202 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 4399 NumberOfCodeBlocks, 4399 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4390 ConstructedInterpolants, 0 QuantifiedInterpolants, 6140606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 3772/3772 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown