java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:09:55,022 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:09:55,025 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:09:55,044 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:09:55,044 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:09:55,046 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:09:55,048 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:09:55,050 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:09:55,053 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:09:55,056 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:09:55,059 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:09:55,059 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:09:55,060 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:09:55,061 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:09:55,064 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:09:55,066 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:09:55,067 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:09:55,069 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:09:55,074 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:09:55,082 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:09:55,083 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:09:55,087 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:09:55,090 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:09:55,091 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:09:55,093 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:09:55,094 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:09:55,096 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:09:55,097 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:09:55,099 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:09:55,101 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:09:55,101 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:09:55,102 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:09:55,104 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 16:09:55,125 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:09:55,126 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:09:55,127 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:09:55,127 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:09:55,128 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:09:55,128 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:09:55,129 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:09:55,129 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:09:55,129 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:09:55,129 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:09:55,130 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:09:55,130 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:09:55,130 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:09:55,130 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:09:55,130 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:09:55,131 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:09:55,132 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:09:55,132 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:09:55,132 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:09:55,132 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:09:55,132 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:09:55,133 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:09:55,133 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:09:55,133 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:09:55,133 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:09:55,133 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:09:55,134 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:09:55,134 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:09:55,205 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:09:55,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:09:55,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:09:55,226 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:09:55,226 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:09:55,227 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label04_true-unreach-call.c [2018-10-24 16:09:55,291 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48eee07d1/54449a343fde4f6b827a2ff50037ba66/FLAG590a6e21c [2018-10-24 16:09:56,017 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:09:56,018 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label04_true-unreach-call.c [2018-10-24 16:09:56,052 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48eee07d1/54449a343fde4f6b827a2ff50037ba66/FLAG590a6e21c [2018-10-24 16:09:56,073 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48eee07d1/54449a343fde4f6b827a2ff50037ba66 [2018-10-24 16:09:56,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:09:56,089 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:09:56,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:09:56,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:09:56,096 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:09:56,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:09:56" (1/1) ... [2018-10-24 16:09:56,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19392d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:09:56, skipping insertion in model container [2018-10-24 16:09:56,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:09:56" (1/1) ... [2018-10-24 16:09:56,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:09:56,277 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:09:57,513 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:09:57,517 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:09:58,100 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:09:58,138 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:09:58,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:09:58 WrapperNode [2018-10-24 16:09:58,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:09:58,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:09:58,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:09:58,142 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:09:58,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:09:58" (1/1) ... [2018-10-24 16:09:58,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:09:58" (1/1) ... [2018-10-24 16:09:58,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:09:58,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:09:58,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:09:58,786 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:09:58,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:09:58" (1/1) ... [2018-10-24 16:09:58,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:09:58" (1/1) ... [2018-10-24 16:09:58,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:09:58" (1/1) ... [2018-10-24 16:09:58,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:09:58" (1/1) ... [2018-10-24 16:09:58,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:09:58" (1/1) ... [2018-10-24 16:09:59,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:09:58" (1/1) ... [2018-10-24 16:09:59,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:09:58" (1/1) ... [2018-10-24 16:09:59,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:09:59,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:09:59,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:09:59,138 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:09:59,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:09:58" (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 16:09:59,206 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:09:59,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:09:59,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:10:07,561 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:10:07,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:10:07 BoogieIcfgContainer [2018-10-24 16:10:07,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:10:07,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:10:07,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:10:07,567 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:10:07,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:09:56" (1/3) ... [2018-10-24 16:10:07,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281a961a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:10:07, skipping insertion in model container [2018-10-24 16:10:07,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:09:58" (2/3) ... [2018-10-24 16:10:07,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281a961a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:10:07, skipping insertion in model container [2018-10-24 16:10:07,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:10:07" (3/3) ... [2018-10-24 16:10:07,572 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label04_true-unreach-call.c [2018-10-24 16:10:07,581 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:10:07,591 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:10:07,609 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:10:07,653 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:10:07,654 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:10:07,654 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:10:07,654 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:10:07,654 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:10:07,654 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:10:07,655 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:10:07,655 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:10:07,655 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:10:07,694 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 16:10:07,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-24 16:10:07,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:07,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:10:07,708 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:07,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:07,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1059493314, now seen corresponding path program 1 times [2018-10-24 16:10:07,719 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:07,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:07,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:07,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:07,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:08,179 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 16:10:08,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:10:08,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:10:08,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:10:08,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:10:08,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:10:08,206 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 16:10:22,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:10:22,284 INFO L93 Difference]: Finished difference Result 3162 states and 6150 transitions. [2018-10-24 16:10:22,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:10:22,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-10-24 16:10:22,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:10:22,332 INFO L225 Difference]: With dead ends: 3162 [2018-10-24 16:10:22,333 INFO L226 Difference]: Without dead ends: 2336 [2018-10-24 16:10:22,341 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 16:10:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2018-10-24 16:10:22,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1568. [2018-10-24 16:10:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2018-10-24 16:10:22,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2556 transitions. [2018-10-24 16:10:22,470 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2556 transitions. Word has length 61 [2018-10-24 16:10:22,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:10:22,470 INFO L481 AbstractCegarLoop]: Abstraction has 1568 states and 2556 transitions. [2018-10-24 16:10:22,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:10:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2556 transitions. [2018-10-24 16:10:22,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 16:10:22,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:22,478 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, 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] [2018-10-24 16:10:22,478 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:22,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:22,478 INFO L82 PathProgramCache]: Analyzing trace with hash 165959356, now seen corresponding path program 1 times [2018-10-24 16:10:22,479 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:22,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:22,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:22,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:22,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:10:22,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:10:22,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:10:22,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:10:22,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:10:22,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:10:22,738 INFO L87 Difference]: Start difference. First operand 1568 states and 2556 transitions. Second operand 4 states. [2018-10-24 16:10:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:10:37,870 INFO L93 Difference]: Finished difference Result 6142 states and 10096 transitions. [2018-10-24 16:10:37,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:10:37,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2018-10-24 16:10:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:10:37,894 INFO L225 Difference]: With dead ends: 6142 [2018-10-24 16:10:37,895 INFO L226 Difference]: Without dead ends: 4576 [2018-10-24 16:10:37,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:10:37,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2018-10-24 16:10:37,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4576. [2018-10-24 16:10:37,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4576 states. [2018-10-24 16:10:37,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6531 transitions. [2018-10-24 16:10:37,985 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6531 transitions. Word has length 137 [2018-10-24 16:10:37,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:10:37,986 INFO L481 AbstractCegarLoop]: Abstraction has 4576 states and 6531 transitions. [2018-10-24 16:10:37,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:10:37,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6531 transitions. [2018-10-24 16:10:37,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 16:10:37,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:37,990 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:10:37,990 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:37,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:37,991 INFO L82 PathProgramCache]: Analyzing trace with hash -947691967, now seen corresponding path program 1 times [2018-10-24 16:10:37,991 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:37,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:37,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:37,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:37,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:10:38,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:10:38,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:10:38,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:10:38,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:10:38,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:10:38,503 INFO L87 Difference]: Start difference. First operand 4576 states and 6531 transitions. Second operand 6 states. [2018-10-24 16:10:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:10:52,453 INFO L93 Difference]: Finished difference Result 15166 states and 21142 transitions. [2018-10-24 16:10:52,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:10:52,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-24 16:10:52,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:10:52,504 INFO L225 Difference]: With dead ends: 15166 [2018-10-24 16:10:52,504 INFO L226 Difference]: Without dead ends: 10592 [2018-10-24 16:10:52,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:10:52,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2018-10-24 16:10:52,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 10592. [2018-10-24 16:10:52,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10592 states. [2018-10-24 16:10:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10592 states to 10592 states and 14292 transitions. [2018-10-24 16:10:52,696 INFO L78 Accepts]: Start accepts. Automaton has 10592 states and 14292 transitions. Word has length 139 [2018-10-24 16:10:52,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:10:52,697 INFO L481 AbstractCegarLoop]: Abstraction has 10592 states and 14292 transitions. [2018-10-24 16:10:52,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:10:52,697 INFO L276 IsEmpty]: Start isEmpty. Operand 10592 states and 14292 transitions. [2018-10-24 16:10:52,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-24 16:10:52,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:52,702 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:10:52,703 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:52,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:52,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1986074575, now seen corresponding path program 1 times [2018-10-24 16:10:52,703 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:52,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:52,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:52,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:52,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:53,222 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-24 16:10:53,376 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 159 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-24 16:10:53,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:10:53,376 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:10:53,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:53,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:10:53,580 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:10:53,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:10:53,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:10:53,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:10:53,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:10:53,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:10:53,614 INFO L87 Difference]: Start difference. First operand 10592 states and 14292 transitions. Second operand 7 states. [2018-10-24 16:10:54,493 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-24 16:11:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:13,613 INFO L93 Difference]: Finished difference Result 41518 states and 54744 transitions. [2018-10-24 16:11:13,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:11:13,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2018-10-24 16:11:13,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:13,692 INFO L225 Difference]: With dead ends: 41518 [2018-10-24 16:11:13,693 INFO L226 Difference]: Without dead ends: 29421 [2018-10-24 16:11:13,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:11:13,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29421 states. [2018-10-24 16:11:14,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29421 to 20367. [2018-10-24 16:11:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20367 states. [2018-10-24 16:11:14,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20367 states to 20367 states and 25010 transitions. [2018-10-24 16:11:14,142 INFO L78 Accepts]: Start accepts. Automaton has 20367 states and 25010 transitions. Word has length 211 [2018-10-24 16:11:14,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:14,143 INFO L481 AbstractCegarLoop]: Abstraction has 20367 states and 25010 transitions. [2018-10-24 16:11:14,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:11:14,143 INFO L276 IsEmpty]: Start isEmpty. Operand 20367 states and 25010 transitions. [2018-10-24 16:11:14,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-24 16:11:14,149 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:14,149 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:11:14,149 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:14,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:14,150 INFO L82 PathProgramCache]: Analyzing trace with hash 61082558, now seen corresponding path program 1 times [2018-10-24 16:11:14,150 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:14,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:14,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:14,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:14,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 16:11:14,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:11:14,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:11:14,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:11:14,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:11:14,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:11:14,502 INFO L87 Difference]: Start difference. First operand 20367 states and 25010 transitions. Second operand 3 states. [2018-10-24 16:11:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:19,697 INFO L93 Difference]: Finished difference Result 47500 states and 58798 transitions. [2018-10-24 16:11:19,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:11:19,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2018-10-24 16:11:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:19,758 INFO L225 Difference]: With dead ends: 47500 [2018-10-24 16:11:19,758 INFO L226 Difference]: Without dead ends: 27887 [2018-10-24 16:11:19,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:11:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27887 states. [2018-10-24 16:11:20,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27887 to 27887. [2018-10-24 16:11:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27887 states. [2018-10-24 16:11:20,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27887 states to 27887 states and 33811 transitions. [2018-10-24 16:11:20,165 INFO L78 Accepts]: Start accepts. Automaton has 27887 states and 33811 transitions. Word has length 293 [2018-10-24 16:11:20,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:20,166 INFO L481 AbstractCegarLoop]: Abstraction has 27887 states and 33811 transitions. [2018-10-24 16:11:20,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:11:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 27887 states and 33811 transitions. [2018-10-24 16:11:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-10-24 16:11:20,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:20,176 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:11:20,176 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:20,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:20,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1506042153, now seen corresponding path program 1 times [2018-10-24 16:11:20,178 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:20,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:20,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:20,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:20,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:20,562 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 16:11:20,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:11:20,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:11:20,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:11:20,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:11:20,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:11:20,564 INFO L87 Difference]: Start difference. First operand 27887 states and 33811 transitions. Second operand 3 states. [2018-10-24 16:11:25,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:25,711 INFO L93 Difference]: Finished difference Result 55020 states and 66863 transitions. [2018-10-24 16:11:25,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:11:25,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 363 [2018-10-24 16:11:25,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:25,755 INFO L225 Difference]: With dead ends: 55020 [2018-10-24 16:11:25,755 INFO L226 Difference]: Without dead ends: 27887 [2018-10-24 16:11:25,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:11:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27887 states. [2018-10-24 16:11:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27887 to 26383. [2018-10-24 16:11:26,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26383 states. [2018-10-24 16:11:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26383 states to 26383 states and 30906 transitions. [2018-10-24 16:11:26,392 INFO L78 Accepts]: Start accepts. Automaton has 26383 states and 30906 transitions. Word has length 363 [2018-10-24 16:11:26,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:26,393 INFO L481 AbstractCegarLoop]: Abstraction has 26383 states and 30906 transitions. [2018-10-24 16:11:26,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:11:26,393 INFO L276 IsEmpty]: Start isEmpty. Operand 26383 states and 30906 transitions. [2018-10-24 16:11:26,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-10-24 16:11:26,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:26,406 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:11:26,406 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:26,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:26,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1983113583, now seen corresponding path program 1 times [2018-10-24 16:11:26,407 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:26,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:26,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:26,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:26,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 16:11:26,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:11:26,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:11:26,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:11:26,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:11:26,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:11:26,973 INFO L87 Difference]: Start difference. First operand 26383 states and 30906 transitions. Second operand 4 states. [2018-10-24 16:11:34,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:34,778 INFO L93 Difference]: Finished difference Result 88860 states and 104381 transitions. [2018-10-24 16:11:34,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:11:34,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 391 [2018-10-24 16:11:34,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:34,856 INFO L225 Difference]: With dead ends: 88860 [2018-10-24 16:11:34,856 INFO L226 Difference]: Without dead ends: 60211 [2018-10-24 16:11:34,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:11:34,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60211 states. [2018-10-24 16:11:35,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60211 to 54947. [2018-10-24 16:11:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54947 states. [2018-10-24 16:11:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54947 states to 54947 states and 62112 transitions. [2018-10-24 16:11:36,141 INFO L78 Accepts]: Start accepts. Automaton has 54947 states and 62112 transitions. Word has length 391 [2018-10-24 16:11:36,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:36,142 INFO L481 AbstractCegarLoop]: Abstraction has 54947 states and 62112 transitions. [2018-10-24 16:11:36,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:11:36,143 INFO L276 IsEmpty]: Start isEmpty. Operand 54947 states and 62112 transitions. [2018-10-24 16:11:36,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-10-24 16:11:36,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:36,156 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, 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, 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] [2018-10-24 16:11:36,157 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:36,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:36,158 INFO L82 PathProgramCache]: Analyzing trace with hash -770153544, now seen corresponding path program 1 times [2018-10-24 16:11:36,158 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:36,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:36,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:36,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:36,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 370 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 16:11:36,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:11:36,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:11:36,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:11:36,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:11:36,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:11:36,561 INFO L87 Difference]: Start difference. First operand 54947 states and 62112 transitions. Second operand 3 states. [2018-10-24 16:11:43,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:43,617 INFO L93 Difference]: Finished difference Result 134708 states and 153760 transitions. [2018-10-24 16:11:43,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:11:43,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 402 [2018-10-24 16:11:43,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:43,701 INFO L225 Difference]: With dead ends: 134708 [2018-10-24 16:11:43,701 INFO L226 Difference]: Without dead ends: 80515 [2018-10-24 16:11:43,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:11:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80515 states. [2018-10-24 16:11:44,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80515 to 80515. [2018-10-24 16:11:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80515 states. [2018-10-24 16:11:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80515 states to 80515 states and 91416 transitions. [2018-10-24 16:11:44,518 INFO L78 Accepts]: Start accepts. Automaton has 80515 states and 91416 transitions. Word has length 402 [2018-10-24 16:11:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:44,519 INFO L481 AbstractCegarLoop]: Abstraction has 80515 states and 91416 transitions. [2018-10-24 16:11:44,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:11:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 80515 states and 91416 transitions. [2018-10-24 16:11:44,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-10-24 16:11:44,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:44,534 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, 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, 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] [2018-10-24 16:11:44,534 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:44,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:44,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1633068981, now seen corresponding path program 1 times [2018-10-24 16:11:44,535 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:44,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:44,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:44,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:44,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 16:11:45,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:11:45,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:11:45,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:11:45,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:11:45,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:11:45,666 INFO L87 Difference]: Start difference. First operand 80515 states and 91416 transitions. Second operand 4 states. [2018-10-24 16:11:52,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:52,420 INFO L93 Difference]: Finished difference Result 160276 states and 182073 transitions. [2018-10-24 16:11:52,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:11:52,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 419 [2018-10-24 16:11:52,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:52,509 INFO L225 Difference]: With dead ends: 160276 [2018-10-24 16:11:52,509 INFO L226 Difference]: Without dead ends: 80515 [2018-10-24 16:11:52,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:11:52,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80515 states. [2018-10-24 16:11:53,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80515 to 80515. [2018-10-24 16:11:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80515 states. [2018-10-24 16:11:53,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80515 states to 80515 states and 87838 transitions. [2018-10-24 16:11:53,163 INFO L78 Accepts]: Start accepts. Automaton has 80515 states and 87838 transitions. Word has length 419 [2018-10-24 16:11:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:53,164 INFO L481 AbstractCegarLoop]: Abstraction has 80515 states and 87838 transitions. [2018-10-24 16:11:53,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:11:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 80515 states and 87838 transitions. [2018-10-24 16:11:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-10-24 16:11:53,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:53,173 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, 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, 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] [2018-10-24 16:11:53,173 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:53,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash 702803135, now seen corresponding path program 1 times [2018-10-24 16:11:53,174 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:53,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:53,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:53,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:53,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:53,604 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-10-24 16:11:53,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:11:53,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:11:53,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:11:53,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:11:53,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:11:53,606 INFO L87 Difference]: Start difference. First operand 80515 states and 87838 transitions. Second operand 4 states. [2018-10-24 16:12:01,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:01,966 INFO L93 Difference]: Finished difference Result 207652 states and 225699 transitions. [2018-10-24 16:12:01,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:12:01,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 423 [2018-10-24 16:12:01,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:02,090 INFO L225 Difference]: With dead ends: 207652 [2018-10-24 16:12:02,090 INFO L226 Difference]: Without dead ends: 127891 [2018-10-24 16:12:02,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:02,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127891 states. [2018-10-24 16:12:02,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127891 to 112851. [2018-10-24 16:12:02,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112851 states. [2018-10-24 16:12:03,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112851 states to 112851 states and 121363 transitions. [2018-10-24 16:12:03,076 INFO L78 Accepts]: Start accepts. Automaton has 112851 states and 121363 transitions. Word has length 423 [2018-10-24 16:12:03,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:03,077 INFO L481 AbstractCegarLoop]: Abstraction has 112851 states and 121363 transitions. [2018-10-24 16:12:03,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:12:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 112851 states and 121363 transitions. [2018-10-24 16:12:03,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-10-24 16:12:03,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:03,093 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:03,093 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:03,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:03,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1094920460, now seen corresponding path program 1 times [2018-10-24 16:12:03,094 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:03,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:03,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:03,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:03,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 626 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-10-24 16:12:03,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:03,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:12:03,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:12:03,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:12:03,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:12:03,449 INFO L87 Difference]: Start difference. First operand 112851 states and 121363 transitions. Second operand 3 states. [2018-10-24 16:12:09,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:09,543 INFO L93 Difference]: Finished difference Result 238484 states and 256579 transitions. [2018-10-24 16:12:09,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:12:09,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 506 [2018-10-24 16:12:09,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:09,715 INFO L225 Difference]: With dead ends: 238484 [2018-10-24 16:12:09,715 INFO L226 Difference]: Without dead ends: 126387 [2018-10-24 16:12:09,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:12:09,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126387 states. [2018-10-24 16:12:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126387 to 122627. [2018-10-24 16:12:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122627 states. [2018-10-24 16:12:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122627 states to 122627 states and 130383 transitions. [2018-10-24 16:12:11,197 INFO L78 Accepts]: Start accepts. Automaton has 122627 states and 130383 transitions. Word has length 506 [2018-10-24 16:12:11,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:11,198 INFO L481 AbstractCegarLoop]: Abstraction has 122627 states and 130383 transitions. [2018-10-24 16:12:11,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:12:11,199 INFO L276 IsEmpty]: Start isEmpty. Operand 122627 states and 130383 transitions. [2018-10-24 16:12:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-10-24 16:12:11,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:11,215 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:12:11,215 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:11,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:11,216 INFO L82 PathProgramCache]: Analyzing trace with hash -14304776, now seen corresponding path program 1 times [2018-10-24 16:12:11,216 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:11,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:11,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:11,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:11,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 618 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2018-10-24 16:12:11,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:11,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:12:11,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:12:11,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:12:11,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:11,670 INFO L87 Difference]: Start difference. First operand 122627 states and 130383 transitions. Second operand 4 states. [2018-10-24 16:12:19,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:19,430 INFO L93 Difference]: Finished difference Result 254276 states and 270467 transitions. [2018-10-24 16:12:19,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:12:19,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 506 [2018-10-24 16:12:19,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:19,571 INFO L225 Difference]: With dead ends: 254276 [2018-10-24 16:12:19,572 INFO L226 Difference]: Without dead ends: 132403 [2018-10-24 16:12:19,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:19,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132403 states. [2018-10-24 16:12:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132403 to 131651. [2018-10-24 16:12:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131651 states. [2018-10-24 16:12:20,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131651 states to 131651 states and 138202 transitions. [2018-10-24 16:12:20,679 INFO L78 Accepts]: Start accepts. Automaton has 131651 states and 138202 transitions. Word has length 506 [2018-10-24 16:12:20,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:20,680 INFO L481 AbstractCegarLoop]: Abstraction has 131651 states and 138202 transitions. [2018-10-24 16:12:20,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:12:20,680 INFO L276 IsEmpty]: Start isEmpty. Operand 131651 states and 138202 transitions. [2018-10-24 16:12:20,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2018-10-24 16:12:20,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:20,691 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, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:20,691 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:20,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:20,692 INFO L82 PathProgramCache]: Analyzing trace with hash -5835663, now seen corresponding path program 1 times [2018-10-24 16:12:20,692 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:20,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:20,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:20,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:20,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:21,842 WARN L179 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:12:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 242 proven. 461 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-24 16:12:22,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:12:22,323 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:12:22,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:22,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:12:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2018-10-24 16:12:22,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:12:22,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2018-10-24 16:12:22,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 16:12:22,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 16:12:22,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:12:22,663 INFO L87 Difference]: Start difference. First operand 131651 states and 138202 transitions. Second operand 11 states. [2018-10-24 16:13:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:01,553 INFO L93 Difference]: Finished difference Result 282848 states and 296984 transitions. [2018-10-24 16:13:01,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 16:13:01,554 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 560 [2018-10-24 16:13:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:01,717 INFO L225 Difference]: With dead ends: 282848 [2018-10-24 16:13:01,717 INFO L226 Difference]: Without dead ends: 146679 [2018-10-24 16:13:01,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 567 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-10-24 16:13:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146679 states. [2018-10-24 16:13:02,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146679 to 118099. [2018-10-24 16:13:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118099 states. [2018-10-24 16:13:02,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118099 states to 118099 states and 122264 transitions. [2018-10-24 16:13:02,873 INFO L78 Accepts]: Start accepts. Automaton has 118099 states and 122264 transitions. Word has length 560 [2018-10-24 16:13:02,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:02,874 INFO L481 AbstractCegarLoop]: Abstraction has 118099 states and 122264 transitions. [2018-10-24 16:13:02,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 16:13:02,874 INFO L276 IsEmpty]: Start isEmpty. Operand 118099 states and 122264 transitions. [2018-10-24 16:13:02,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2018-10-24 16:13:02,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:02,909 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:13:02,910 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:02,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:02,910 INFO L82 PathProgramCache]: Analyzing trace with hash -752154942, now seen corresponding path program 1 times [2018-10-24 16:13:02,911 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:02,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:02,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:02,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:02,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 879 proven. 8 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-10-24 16:13:04,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:13:04,716 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:13:04,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:04,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:13:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 886 proven. 110 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-10-24 16:13:06,240 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:13:06,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2018-10-24 16:13:06,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 16:13:06,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 16:13:06,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:13:06,242 INFO L87 Difference]: Start difference. First operand 118099 states and 122264 transitions. Second operand 10 states. [2018-10-24 16:13:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:20,867 INFO L93 Difference]: Finished difference Result 253108 states and 261933 transitions. [2018-10-24 16:13:20,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 16:13:20,868 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 775 [2018-10-24 16:13:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:21,011 INFO L225 Difference]: With dead ends: 253108 [2018-10-24 16:13:21,011 INFO L226 Difference]: Without dead ends: 135763 [2018-10-24 16:13:21,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 772 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2018-10-24 16:13:21,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135763 states. [2018-10-24 16:13:22,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135763 to 118099. [2018-10-24 16:13:22,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118099 states. [2018-10-24 16:13:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118099 states to 118099 states and 121793 transitions. [2018-10-24 16:13:22,287 INFO L78 Accepts]: Start accepts. Automaton has 118099 states and 121793 transitions. Word has length 775 [2018-10-24 16:13:22,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:22,287 INFO L481 AbstractCegarLoop]: Abstraction has 118099 states and 121793 transitions. [2018-10-24 16:13:22,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 16:13:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 118099 states and 121793 transitions. [2018-10-24 16:13:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2018-10-24 16:13:22,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:22,315 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, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:13:22,316 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:22,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:22,316 INFO L82 PathProgramCache]: Analyzing trace with hash 347022633, now seen corresponding path program 1 times [2018-10-24 16:13:22,316 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:22,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:22,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:22,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:22,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-24 16:13:23,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:13:23,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:13:23,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:13:23,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:13:23,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:23,883 INFO L87 Difference]: Start difference. First operand 118099 states and 121793 transitions. Second operand 4 states. [2018-10-24 16:13:30,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:30,289 INFO L93 Difference]: Finished difference Result 245220 states and 252832 transitions. [2018-10-24 16:13:30,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:13:30,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 793 [2018-10-24 16:13:30,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:30,408 INFO L225 Difference]: With dead ends: 245220 [2018-10-24 16:13:30,408 INFO L226 Difference]: Without dead ends: 126370 [2018-10-24 16:13:30,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:30,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126370 states. [2018-10-24 16:13:31,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126370 to 118098. [2018-10-24 16:13:31,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118098 states. [2018-10-24 16:13:32,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118098 states to 118098 states and 121705 transitions. [2018-10-24 16:13:32,075 INFO L78 Accepts]: Start accepts. Automaton has 118098 states and 121705 transitions. Word has length 793 [2018-10-24 16:13:32,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:32,075 INFO L481 AbstractCegarLoop]: Abstraction has 118098 states and 121705 transitions. [2018-10-24 16:13:32,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:13:32,075 INFO L276 IsEmpty]: Start isEmpty. Operand 118098 states and 121705 transitions. [2018-10-24 16:13:32,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2018-10-24 16:13:32,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:32,109 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:32,109 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:32,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:32,109 INFO L82 PathProgramCache]: Analyzing trace with hash -550988171, now seen corresponding path program 1 times [2018-10-24 16:13:32,110 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:32,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:32,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:32,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:32,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:32,938 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:13:33,308 WARN L179 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-10-24 16:13:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 377 proven. 869 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-24 16:13:35,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:13:35,218 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:13:35,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:35,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:13:36,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 788 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2018-10-24 16:13:36,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:13:36,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-24 16:13:36,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 16:13:36,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 16:13:36,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:13:36,627 INFO L87 Difference]: Start difference. First operand 118098 states and 121705 transitions. Second operand 12 states. Received shutdown request... [2018-10-24 16:13:47,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 16:13:47,936 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:13:47,942 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:13:47,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:13:47 BoogieIcfgContainer [2018-10-24 16:13:47,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:13:47,943 INFO L168 Benchmark]: Toolchain (without parser) took 231855.89 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -244.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 16:13:47,944 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:13:47,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2049.82 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: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:13:47,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 644.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -989.6 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:13:47,947 INFO L168 Benchmark]: Boogie Preprocessor took 351.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:13:47,947 INFO L168 Benchmark]: RCFGBuilder took 8425.47 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 247.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -233.0 MB). Peak memory consumption was 655.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:13:47,948 INFO L168 Benchmark]: TraceAbstraction took 220378.26 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 1.7 GB in the end (delta: 729.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 16:13:47,953 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2049.82 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: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 644.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -989.6 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 351.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8425.47 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 247.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -233.0 MB). Peak memory consumption was 655.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220378.26 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 1.7 GB in the end (delta: 729.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (118098states) and FLOYD_HOARE automaton (currently 17 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (21996 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 220.2s OverallTime, 16 OverallIterations, 6 TraceHistogramMax, 190.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8821 SDtfs, 45399 SDslu, 2102 SDs, 0 SdLazy, 109259 SolverSat, 14093 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 152.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2505 GetRequests, 2401 SyntacticMatches, 24 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131651occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 11.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 90658 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 9167 NumberOfCodeBlocks, 9167 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 9147 ConstructedInterpolants, 0 QuantifiedInterpolants, 21868600 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2923 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 20 InterpolantComputations, 15 PerfectInterpolantSequences, 10477/11930 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown