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/Problem13_label43_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:08:09,638 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:08:09,646 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:08:09,663 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:08:09,664 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:08:09,665 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:08:09,666 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:08:09,668 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:08:09,669 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:08:09,670 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:08:09,671 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:08:09,671 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:08:09,672 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:08:09,673 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:08:09,674 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:08:09,675 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:08:09,676 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:08:09,678 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:08:09,680 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:08:09,681 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:08:09,683 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:08:09,684 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:08:09,687 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:08:09,688 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:08:09,689 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:08:09,690 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:08:09,691 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:08:09,692 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:08:09,692 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:08:09,693 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:08:09,694 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:08:09,694 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:08:09,697 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 [2018-10-23 18:08:09,724 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:08:09,724 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:08:09,726 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:08:09,726 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:08:09,727 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:08:09,727 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:08:09,727 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:08:09,727 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:08:09,728 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:08:09,728 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:08:09,728 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:08:09,728 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:08:09,728 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:08:09,728 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:08:09,729 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:08:09,729 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:08:09,729 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:08:09,729 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:08:09,729 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:08:09,730 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:08:09,731 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:08:09,731 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:08:09,731 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:08:09,732 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:08:09,732 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:08:09,732 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:08:09,732 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:08:09,732 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:08:09,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:08:09,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:08:09,806 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:08:09,807 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:08:09,808 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:08:09,808 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label43_false-unreach-call.c [2018-10-23 18:08:09,869 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5c99876a/3468352429bf462a939dd15e49ae0def/FLAGe3953891a [2018-10-23 18:08:10,718 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:08:10,719 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label43_false-unreach-call.c [2018-10-23 18:08:10,758 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5c99876a/3468352429bf462a939dd15e49ae0def/FLAGe3953891a [2018-10-23 18:08:10,773 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5c99876a/3468352429bf462a939dd15e49ae0def [2018-10-23 18:08:10,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:08:10,788 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:08:10,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:08:10,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:08:10,793 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:08:10,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:08:10" (1/1) ... [2018-10-23 18:08:10,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd01a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:10, skipping insertion in model container [2018-10-23 18:08:10,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:08:10" (1/1) ... [2018-10-23 18:08:10,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:08:11,009 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:08:12,517 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:08:12,522 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:08:13,262 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:08:13,301 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:08:13,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:13 WrapperNode [2018-10-23 18:08:13,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:08:13,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:08:13,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:08:13,303 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:08:13,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:13" (1/1) ... [2018-10-23 18:08:13,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:13" (1/1) ... [2018-10-23 18:08:14,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:08:14,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:08:14,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:08:14,148 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:08:14,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:13" (1/1) ... [2018-10-23 18:08:14,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:13" (1/1) ... [2018-10-23 18:08:14,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:13" (1/1) ... [2018-10-23 18:08:14,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:13" (1/1) ... [2018-10-23 18:08:14,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:13" (1/1) ... [2018-10-23 18:08:14,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:13" (1/1) ... [2018-10-23 18:08:14,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:13" (1/1) ... [2018-10-23 18:08:14,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:08:14,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:08:14,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:08:14,642 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:08:14,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:13" (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 [2018-10-23 18:08:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:08:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:08:14,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:08:30,154 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:08:30,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:08:30 BoogieIcfgContainer [2018-10-23 18:08:30,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:08:30,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:08:30,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:08:30,160 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:08:30,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:08:10" (1/3) ... [2018-10-23 18:08:30,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80c2bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:08:30, skipping insertion in model container [2018-10-23 18:08:30,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:13" (2/3) ... [2018-10-23 18:08:30,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80c2bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:08:30, skipping insertion in model container [2018-10-23 18:08:30,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:08:30" (3/3) ... [2018-10-23 18:08:30,166 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label43_false-unreach-call.c [2018-10-23 18:08:30,176 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:08:30,191 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:08:30,211 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:08:30,270 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:08:30,270 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:08:30,271 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:08:30,271 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:08:30,271 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:08:30,271 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:08:30,271 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:08:30,271 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:08:30,271 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:08:30,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 18:08:30,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-23 18:08:30,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:30,323 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:08:30,325 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:30,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:30,332 INFO L82 PathProgramCache]: Analyzing trace with hash -686802918, now seen corresponding path program 1 times [2018-10-23 18:08:30,334 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:30,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:30,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:30,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:30,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:08:30,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:30,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:08:30,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:08:30,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:08:30,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:30,750 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 18:08:47,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:47,795 INFO L93 Difference]: Finished difference Result 3863 states and 7261 transitions. [2018-10-23 18:08:47,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:08:47,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-10-23 18:08:47,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:47,842 INFO L225 Difference]: With dead ends: 3863 [2018-10-23 18:08:47,842 INFO L226 Difference]: Without dead ends: 2757 [2018-10-23 18:08:47,852 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 [2018-10-23 18:08:47,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-10-23 18:08:48,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2736. [2018-10-23 18:08:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-10-23 18:08:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4486 transitions. [2018-10-23 18:08:48,016 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4486 transitions. Word has length 19 [2018-10-23 18:08:48,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:48,016 INFO L481 AbstractCegarLoop]: Abstraction has 2736 states and 4486 transitions. [2018-10-23 18:08:48,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:08:48,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4486 transitions. [2018-10-23 18:08:48,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-23 18:08:48,021 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:48,022 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:08:48,022 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:48,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:48,022 INFO L82 PathProgramCache]: Analyzing trace with hash -689790280, now seen corresponding path program 1 times [2018-10-23 18:08:48,023 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:48,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:48,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:48,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:48,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:08:48,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:48,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:08:48,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:08:48,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:08:48,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:48,375 INFO L87 Difference]: Start difference. First operand 2736 states and 4486 transitions. Second operand 4 states. [2018-10-23 18:09:02,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:02,647 INFO L93 Difference]: Finished difference Result 10269 states and 17048 transitions. [2018-10-23 18:09:02,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:09:02,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-23 18:09:02,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:02,688 INFO L225 Difference]: With dead ends: 10269 [2018-10-23 18:09:02,688 INFO L226 Difference]: Without dead ends: 7535 [2018-10-23 18:09:02,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:09:02,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2018-10-23 18:09:02,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 7527. [2018-10-23 18:09:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7527 states. [2018-10-23 18:09:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7527 states to 7527 states and 11327 transitions. [2018-10-23 18:09:02,847 INFO L78 Accepts]: Start accepts. Automaton has 7527 states and 11327 transitions. Word has length 106 [2018-10-23 18:09:02,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:02,848 INFO L481 AbstractCegarLoop]: Abstraction has 7527 states and 11327 transitions. [2018-10-23 18:09:02,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:09:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand 7527 states and 11327 transitions. [2018-10-23 18:09:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-23 18:09:02,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:02,852 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:09:02,852 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:02,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1500021945, now seen corresponding path program 1 times [2018-10-23 18:09:02,853 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:02,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:02,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:02,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:02,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:09:03,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:09:03,265 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:09:03,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:03,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:09:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-23 18:09:03,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:09:03,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-23 18:09:03,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:09:03,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:09:03,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:09:03,623 INFO L87 Difference]: Start difference. First operand 7527 states and 11327 transitions. Second operand 6 states. [2018-10-23 18:09:38,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:38,528 INFO L93 Difference]: Finished difference Result 65291 states and 99022 transitions. [2018-10-23 18:09:38,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 18:09:38,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-10-23 18:09:38,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:38,736 INFO L225 Difference]: With dead ends: 65291 [2018-10-23 18:09:38,736 INFO L226 Difference]: Without dead ends: 57766 [2018-10-23 18:09:38,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:09:38,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57766 states. [2018-10-23 18:09:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57766 to 57478. [2018-10-23 18:09:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57478 states. [2018-10-23 18:09:39,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57478 states to 57478 states and 76550 transitions. [2018-10-23 18:09:39,763 INFO L78 Accepts]: Start accepts. Automaton has 57478 states and 76550 transitions. Word has length 116 [2018-10-23 18:09:39,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:39,769 INFO L481 AbstractCegarLoop]: Abstraction has 57478 states and 76550 transitions. [2018-10-23 18:09:39,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:09:39,769 INFO L276 IsEmpty]: Start isEmpty. Operand 57478 states and 76550 transitions. [2018-10-23 18:09:39,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-10-23 18:09:39,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:39,800 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:09:39,801 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:39,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:39,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1532722693, now seen corresponding path program 1 times [2018-10-23 18:09:39,801 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:39,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:39,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:39,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:39,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-23 18:09:40,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:40,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:09:40,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:09:40,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:09:40,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:09:40,248 INFO L87 Difference]: Start difference. First operand 57478 states and 76550 transitions. Second operand 4 states. [2018-10-23 18:09:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:56,027 INFO L93 Difference]: Finished difference Result 187590 states and 250576 transitions. [2018-10-23 18:09:56,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:09:56,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 280 [2018-10-23 18:09:56,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:56,248 INFO L225 Difference]: With dead ends: 187590 [2018-10-23 18:09:56,249 INFO L226 Difference]: Without dead ends: 130114 [2018-10-23 18:09:56,348 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 [2018-10-23 18:09:56,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130114 states. [2018-10-23 18:09:57,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130114 to 94513. [2018-10-23 18:09:57,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94513 states. [2018-10-23 18:09:57,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94513 states to 94513 states and 120970 transitions. [2018-10-23 18:09:57,825 INFO L78 Accepts]: Start accepts. Automaton has 94513 states and 120970 transitions. Word has length 280 [2018-10-23 18:09:57,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:57,825 INFO L481 AbstractCegarLoop]: Abstraction has 94513 states and 120970 transitions. [2018-10-23 18:09:57,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:09:57,826 INFO L276 IsEmpty]: Start isEmpty. Operand 94513 states and 120970 transitions. [2018-10-23 18:09:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-23 18:09:57,855 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:57,855 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:09:57,855 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:57,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:57,856 INFO L82 PathProgramCache]: Analyzing trace with hash 386555990, now seen corresponding path program 1 times [2018-10-23 18:09:57,856 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:57,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:57,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:57,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:57,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:58,237 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-23 18:09:58,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:58,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:09:58,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:09:58,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:09:58,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:09:58,239 INFO L87 Difference]: Start difference. First operand 94513 states and 120970 transitions. Second operand 3 states. [2018-10-23 18:10:06,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:06,501 INFO L93 Difference]: Finished difference Result 248897 states and 318295 transitions. [2018-10-23 18:10:06,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:10:06,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 364 [2018-10-23 18:10:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:06,805 INFO L225 Difference]: With dead ends: 248897 [2018-10-23 18:10:06,805 INFO L226 Difference]: Without dead ends: 155174 [2018-10-23 18:10:06,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:10:07,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155174 states. [2018-10-23 18:10:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155174 to 155159. [2018-10-23 18:10:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155159 states. [2018-10-23 18:10:09,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155159 states to 155159 states and 184823 transitions. [2018-10-23 18:10:09,118 INFO L78 Accepts]: Start accepts. Automaton has 155159 states and 184823 transitions. Word has length 364 [2018-10-23 18:10:09,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:10:09,119 INFO L481 AbstractCegarLoop]: Abstraction has 155159 states and 184823 transitions. [2018-10-23 18:10:09,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:10:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 155159 states and 184823 transitions. [2018-10-23 18:10:09,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-23 18:10:09,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:10:09,152 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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] [2018-10-23 18:10:09,152 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:10:09,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:10:09,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1902467750, now seen corresponding path program 1 times [2018-10-23 18:10:09,153 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:10:09,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:10:09,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:09,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:09,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:09,690 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-23 18:10:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-10-23 18:10:09,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:10:09,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:10:09,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:10:09,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:10:09,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:10:09,836 INFO L87 Difference]: Start difference. First operand 155159 states and 184823 transitions. Second operand 4 states. [2018-10-23 18:10:28,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:28,518 INFO L93 Difference]: Finished difference Result 365541 states and 432224 transitions. [2018-10-23 18:10:28,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:10:28,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 368 [2018-10-23 18:10:28,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:28,948 INFO L225 Difference]: With dead ends: 365541 [2018-10-23 18:10:28,948 INFO L226 Difference]: Without dead ends: 211172 [2018-10-23 18:10:29,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:10:29,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211172 states. [2018-10-23 18:10:30,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211172 to 188251. [2018-10-23 18:10:30,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188251 states. [2018-10-23 18:10:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188251 states to 188251 states and 220116 transitions. [2018-10-23 18:10:30,820 INFO L78 Accepts]: Start accepts. Automaton has 188251 states and 220116 transitions. Word has length 368 [2018-10-23 18:10:30,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:10:30,820 INFO L481 AbstractCegarLoop]: Abstraction has 188251 states and 220116 transitions. [2018-10-23 18:10:30,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:10:30,820 INFO L276 IsEmpty]: Start isEmpty. Operand 188251 states and 220116 transitions. [2018-10-23 18:10:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-23 18:10:30,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:10:30,845 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 18:10:30,845 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:10:30,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:10:30,845 INFO L82 PathProgramCache]: Analyzing trace with hash 347716093, now seen corresponding path program 1 times [2018-10-23 18:10:30,846 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:10:30,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:10:30,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:30,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:30,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:31,105 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-23 18:10:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-10-23 18:10:32,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:10:32,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:10:32,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:10:32,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:10:32,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:10:32,484 INFO L87 Difference]: Start difference. First operand 188251 states and 220116 transitions. Second operand 5 states. [2018-10-23 18:10:43,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:43,916 INFO L93 Difference]: Finished difference Result 393081 states and 457968 transitions. [2018-10-23 18:10:43,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:10:43,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 412 [2018-10-23 18:10:43,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:44,176 INFO L225 Difference]: With dead ends: 393081 [2018-10-23 18:10:44,177 INFO L226 Difference]: Without dead ends: 205620 [2018-10-23 18:10:44,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:10:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205620 states. [2018-10-23 18:10:47,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205620 to 205593. [2018-10-23 18:10:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205593 states. [2018-10-23 18:10:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205593 states to 205593 states and 237966 transitions. [2018-10-23 18:10:47,321 INFO L78 Accepts]: Start accepts. Automaton has 205593 states and 237966 transitions. Word has length 412 [2018-10-23 18:10:47,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:10:47,322 INFO L481 AbstractCegarLoop]: Abstraction has 205593 states and 237966 transitions. [2018-10-23 18:10:47,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:10:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 205593 states and 237966 transitions. [2018-10-23 18:10:47,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2018-10-23 18:10:47,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:10:47,340 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:10:47,341 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:10:47,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:10:47,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1819023425, now seen corresponding path program 1 times [2018-10-23 18:10:47,341 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:10:47,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:10:47,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:47,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:47,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-10-23 18:10:49,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:10:49,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:10:49,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:10:49,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:10:49,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:10:49,190 INFO L87 Difference]: Start difference. First operand 205593 states and 237966 transitions. Second operand 4 states. [2018-10-23 18:11:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:11:01,192 INFO L93 Difference]: Finished difference Result 462457 states and 538620 transitions. [2018-10-23 18:11:01,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:11:01,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 468 [2018-10-23 18:11:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:11:01,481 INFO L225 Difference]: With dead ends: 462457 [2018-10-23 18:11:01,481 INFO L226 Difference]: Without dead ends: 257654 [2018-10-23 18:11:01,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:11:01,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257654 states. [2018-10-23 18:11:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257654 to 246548. [2018-10-23 18:11:10,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246548 states. [2018-10-23 18:11:10,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246548 states to 246548 states and 277115 transitions. [2018-10-23 18:11:10,235 INFO L78 Accepts]: Start accepts. Automaton has 246548 states and 277115 transitions. Word has length 468 [2018-10-23 18:11:10,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:11:10,235 INFO L481 AbstractCegarLoop]: Abstraction has 246548 states and 277115 transitions. [2018-10-23 18:11:10,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:11:10,235 INFO L276 IsEmpty]: Start isEmpty. Operand 246548 states and 277115 transitions. [2018-10-23 18:11:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-10-23 18:11:10,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:11:10,252 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:11:10,252 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:11:10,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:11:10,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1054301306, now seen corresponding path program 1 times [2018-10-23 18:11:10,253 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:11:10,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:11:10,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:10,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:11:10,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:11:10,701 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 18:11:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-10-23 18:11:11,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:11:11,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:11:11,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:11:11,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:11:11,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:11:11,672 INFO L87 Difference]: Start difference. First operand 246548 states and 277115 transitions. Second operand 4 states. [2018-10-23 18:11:22,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:11:22,734 INFO L93 Difference]: Finished difference Result 534858 states and 599681 transitions. [2018-10-23 18:11:22,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:11:22,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 494 [2018-10-23 18:11:22,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:11:23,568 INFO L225 Difference]: With dead ends: 534858 [2018-10-23 18:11:23,568 INFO L226 Difference]: Without dead ends: 251179 [2018-10-23 18:11:23,655 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 [2018-10-23 18:11:23,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251179 states. [2018-10-23 18:11:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251179 to 241718. [2018-10-23 18:11:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241718 states. [2018-10-23 18:11:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241718 states to 241718 states and 266235 transitions. [2018-10-23 18:11:26,325 INFO L78 Accepts]: Start accepts. Automaton has 241718 states and 266235 transitions. Word has length 494 [2018-10-23 18:11:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:11:26,326 INFO L481 AbstractCegarLoop]: Abstraction has 241718 states and 266235 transitions. [2018-10-23 18:11:26,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:11:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 241718 states and 266235 transitions. [2018-10-23 18:11:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-10-23 18:11:26,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:11:26,335 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 18:11:26,335 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:11:26,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:11:26,335 INFO L82 PathProgramCache]: Analyzing trace with hash 31785022, now seen corresponding path program 1 times [2018-10-23 18:11:26,335 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:11:26,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:11:26,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:26,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:11:26,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:11:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-23 18:11:27,546 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:11:27,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:11:27,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:11:27,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:11:27,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:11:27,548 INFO L87 Difference]: Start difference. First operand 241718 states and 266235 transitions. Second operand 3 states. [2018-10-23 18:11:35,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:11:35,512 INFO L93 Difference]: Finished difference Result 481066 states and 530063 transitions. [2018-10-23 18:11:35,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:11:35,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 509 [2018-10-23 18:11:35,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:11:35,784 INFO L225 Difference]: With dead ends: 481066 [2018-10-23 18:11:35,784 INFO L226 Difference]: Without dead ends: 240138 [2018-10-23 18:11:35,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:11:36,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240138 states. [2018-10-23 18:11:38,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240138 to 220419. [2018-10-23 18:11:38,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220419 states. [2018-10-23 18:11:39,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220419 states to 220419 states and 237301 transitions. [2018-10-23 18:11:39,448 INFO L78 Accepts]: Start accepts. Automaton has 220419 states and 237301 transitions. Word has length 509 [2018-10-23 18:11:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:11:39,450 INFO L481 AbstractCegarLoop]: Abstraction has 220419 states and 237301 transitions. [2018-10-23 18:11:39,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:11:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 220419 states and 237301 transitions. [2018-10-23 18:11:39,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2018-10-23 18:11:39,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:11:39,467 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:11:39,468 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:11:39,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:11:39,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1987938184, now seen corresponding path program 1 times [2018-10-23 18:11:39,468 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:11:39,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:11:39,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:39,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:11:39,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:11:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 753 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2018-10-23 18:11:39,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:11:39,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:11:39,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:11:39,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:11:39,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:11:39,954 INFO L87 Difference]: Start difference. First operand 220419 states and 237301 transitions. Second operand 4 states. [2018-10-23 18:11:52,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:11:52,477 INFO L93 Difference]: Finished difference Result 474745 states and 512060 transitions. [2018-10-23 18:11:52,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:11:52,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 635 [2018-10-23 18:11:52,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:11:52,749 INFO L225 Difference]: With dead ends: 474745 [2018-10-23 18:11:52,750 INFO L226 Difference]: Without dead ends: 255116 [2018-10-23 18:11:53,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:11:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255116 states. Received shutdown request... [2018-10-23 18:11:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255116 to 242469. [2018-10-23 18:11:55,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242469 states. [2018-10-23 18:11:55,890 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:11:55,895 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:11:55,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:11:55 BoogieIcfgContainer [2018-10-23 18:11:55,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:11:55,897 INFO L168 Benchmark]: Toolchain (without parser) took 225110.10 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-23 18:11:55,898 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:11:55,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2513.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:11:55,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 844.85 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 831.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:11:55,900 INFO L168 Benchmark]: Boogie Preprocessor took 493.70 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: 73.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:11:55,901 INFO L168 Benchmark]: RCFGBuilder took 15513.54 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 220.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 70.7 MB). Peak memory consumption was 586.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:11:55,902 INFO L168 Benchmark]: TraceAbstraction took 205739.40 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-23 18:11:55,907 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2513.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 844.85 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 831.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 493.70 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: 73.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15513.54 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 220.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 70.7 MB). Peak memory consumption was 586.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205739.40 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 66). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 205.6s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 168.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9077 SDtfs, 25644 SDslu, 3429 SDs, 0 SdLazy, 55635 SolverSat, 15576 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 133.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 130 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=246548occurred in iteration=8, 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: 27.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 99167 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 3887 NumberOfCodeBlocks, 3887 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3875 ConstructedInterpolants, 0 QuantifiedInterpolants, 3362504 SizeOfPredicates, 1 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 4019/4031 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown