java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 07:47:25,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 07:47:25,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 07:47:25,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 07:47:25,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 07:47:25,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 07:47:25,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 07:47:25,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 07:47:25,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 07:47:25,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 07:47:25,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 07:47:25,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 07:47:25,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 07:47:25,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 07:47:25,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 07:47:25,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 07:47:25,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 07:47:25,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 07:47:26,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 07:47:26,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 07:47:26,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 07:47:26,026 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 07:47:26,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 07:47:26,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 07:47:26,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 07:47:26,030 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 07:47:26,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 07:47:26,030 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 07:47:26,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 07:47:26,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 07:47:26,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 07:47:26,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 07:47:26,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 07:47:26,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 07:47:26,032 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 07:47:26,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 07:47:26,032 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 07:47:26,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 07:47:26,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 07:47:26,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 07:47:26,033 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 07:47:26,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 07:47:26,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 07:47:26,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 07:47:26,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 07:47:26,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 07:47:26,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 07:47:26,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 07:47:26,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 07:47:26,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 07:47:26,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 07:47:26,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 07:47:26,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 07:47:26,082 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 07:47:26,082 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 07:47:26,083 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2019-09-08 07:47:26,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b7f19c92/ebc36a50508f47688fbaaedd14d7bd83/FLAGae6e69259 [2019-09-08 07:47:26,700 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 07:47:26,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2019-09-08 07:47:26,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b7f19c92/ebc36a50508f47688fbaaedd14d7bd83/FLAGae6e69259 [2019-09-08 07:47:27,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b7f19c92/ebc36a50508f47688fbaaedd14d7bd83 [2019-09-08 07:47:27,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 07:47:27,018 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 07:47:27,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 07:47:27,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 07:47:27,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 07:47:27,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:47:27" (1/1) ... [2019-09-08 07:47:27,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@179de1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:47:27, skipping insertion in model container [2019-09-08 07:47:27,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:47:27" (1/1) ... [2019-09-08 07:47:27,032 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 07:47:27,064 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 07:47:27,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:47:27,390 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 07:47:27,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:47:27,449 INFO L192 MainTranslator]: Completed translation [2019-09-08 07:47:27,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:47:27 WrapperNode [2019-09-08 07:47:27,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 07:47:27,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 07:47:27,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 07:47:27,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 07:47:27,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:47:27" (1/1) ... [2019-09-08 07:47:27,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:47:27" (1/1) ... [2019-09-08 07:47:27,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:47:27" (1/1) ... [2019-09-08 07:47:27,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:47:27" (1/1) ... [2019-09-08 07:47:27,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:47:27" (1/1) ... [2019-09-08 07:47:27,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:47:27" (1/1) ... [2019-09-08 07:47:27,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:47:27" (1/1) ... [2019-09-08 07:47:27,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 07:47:27,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 07:47:27,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 07:47:27,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 07:47:27,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:47:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2019-09-08 07:47:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 07:47:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 07:47:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-08 07:47:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-08 07:47:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-08 07:47:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 07:47:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 07:47:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 07:47:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-08 07:47:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 07:47:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 07:47:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 07:47:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 07:47:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 07:47:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 07:47:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 07:47:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 07:47:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 07:47:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 07:47:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 07:47:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 07:47:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 07:47:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 07:47:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 07:47:28,083 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 07:47:28,083 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 07:47:28,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:47:28 BoogieIcfgContainer [2019-09-08 07:47:28,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 07:47:28,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 07:47:28,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 07:47:28,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 07:47:28,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 07:47:27" (1/3) ... [2019-09-08 07:47:28,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d65732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:47:28, skipping insertion in model container [2019-09-08 07:47:28,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:47:27" (2/3) ... [2019-09-08 07:47:28,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d65732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:47:28, skipping insertion in model container [2019-09-08 07:47:28,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:47:28" (3/3) ... [2019-09-08 07:47:28,093 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c [2019-09-08 07:47:28,102 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 07:47:28,111 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 07:47:28,125 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 07:47:28,156 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 07:47:28,157 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 07:47:28,158 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 07:47:28,158 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 07:47:28,158 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 07:47:28,158 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 07:47:28,159 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 07:47:28,159 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 07:47:28,159 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 07:47:28,180 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2019-09-08 07:47:28,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-08 07:47:28,187 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:28,187 INFO L399 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] [2019-09-08 07:47:28,190 INFO L418 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:28,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:28,194 INFO L82 PathProgramCache]: Analyzing trace with hash -670022, now seen corresponding path program 1 times [2019-09-08 07:47:28,196 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:28,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:28,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:28,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:28,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:28,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:47:28,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:47:28,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:47:28,545 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:47:28,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:47:28,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:47:28,564 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 5 states. [2019-09-08 07:47:28,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:28,667 INFO L93 Difference]: Finished difference Result 150 states and 211 transitions. [2019-09-08 07:47:28,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 07:47:28,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2019-09-08 07:47:28,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:28,680 INFO L225 Difference]: With dead ends: 150 [2019-09-08 07:47:28,680 INFO L226 Difference]: Without dead ends: 82 [2019-09-08 07:47:28,684 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 07:47:28,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-09-08 07:47:28,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2019-09-08 07:47:28,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-09-08 07:47:28,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2019-09-08 07:47:28,734 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 47 [2019-09-08 07:47:28,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:28,735 INFO L475 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2019-09-08 07:47:28,735 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:47:28,735 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2019-09-08 07:47:28,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-08 07:47:28,741 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:28,741 INFO L399 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, 1] [2019-09-08 07:47:28,742 INFO L418 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:28,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:28,742 INFO L82 PathProgramCache]: Analyzing trace with hash 525570851, now seen corresponding path program 1 times [2019-09-08 07:47:28,743 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:28,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:28,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:28,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:28,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:47:29,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:47:29,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:47:29,155 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:47:29,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:47:29,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:47:29,156 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand 9 states. [2019-09-08 07:47:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:30,896 INFO L93 Difference]: Finished difference Result 463 states and 651 transitions. [2019-09-08 07:47:30,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-08 07:47:30,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-09-08 07:47:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:30,907 INFO L225 Difference]: With dead ends: 463 [2019-09-08 07:47:30,907 INFO L226 Difference]: Without dead ends: 409 [2019-09-08 07:47:30,909 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-09-08 07:47:30,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2019-09-08 07:47:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 250. [2019-09-08 07:47:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2019-09-08 07:47:31,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 336 transitions. [2019-09-08 07:47:31,000 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 336 transitions. Word has length 62 [2019-09-08 07:47:31,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:31,003 INFO L475 AbstractCegarLoop]: Abstraction has 250 states and 336 transitions. [2019-09-08 07:47:31,004 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:47:31,004 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 336 transitions. [2019-09-08 07:47:31,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:47:31,010 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:31,010 INFO L399 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, 1, 1, 1] [2019-09-08 07:47:31,011 INFO L418 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:31,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:31,014 INFO L82 PathProgramCache]: Analyzing trace with hash -938666349, now seen corresponding path program 1 times [2019-09-08 07:47:31,014 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:31,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:31,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:31,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:31,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:47:31,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:47:31,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:47:31,146 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:47:31,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:47:31,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:47:31,147 INFO L87 Difference]: Start difference. First operand 250 states and 336 transitions. Second operand 5 states. [2019-09-08 07:47:31,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:31,512 INFO L93 Difference]: Finished difference Result 827 states and 1143 transitions. [2019-09-08 07:47:31,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:47:31,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-08 07:47:31,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:31,518 INFO L225 Difference]: With dead ends: 827 [2019-09-08 07:47:31,518 INFO L226 Difference]: Without dead ends: 605 [2019-09-08 07:47:31,521 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-08 07:47:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-09-08 07:47:31,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 601. [2019-09-08 07:47:31,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2019-09-08 07:47:31,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 808 transitions. [2019-09-08 07:47:31,578 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 808 transitions. Word has length 64 [2019-09-08 07:47:31,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:31,579 INFO L475 AbstractCegarLoop]: Abstraction has 601 states and 808 transitions. [2019-09-08 07:47:31,579 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:47:31,579 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 808 transitions. [2019-09-08 07:47:31,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:47:31,582 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:31,583 INFO L399 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, 1, 1, 1] [2019-09-08 07:47:31,583 INFO L418 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:31,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:31,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2068598491, now seen corresponding path program 1 times [2019-09-08 07:47:31,584 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:31,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:31,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:31,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:31,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:47:31,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:47:31,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:47:31,742 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:47:31,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:47:31,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:47:31,743 INFO L87 Difference]: Start difference. First operand 601 states and 808 transitions. Second operand 5 states. [2019-09-08 07:47:32,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:32,122 INFO L93 Difference]: Finished difference Result 1663 states and 2268 transitions. [2019-09-08 07:47:32,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:47:32,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-08 07:47:32,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:32,131 INFO L225 Difference]: With dead ends: 1663 [2019-09-08 07:47:32,132 INFO L226 Difference]: Without dead ends: 1090 [2019-09-08 07:47:32,135 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:47:32,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2019-09-08 07:47:32,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1088. [2019-09-08 07:47:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1088 states. [2019-09-08 07:47:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1456 transitions. [2019-09-08 07:47:32,213 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1456 transitions. Word has length 64 [2019-09-08 07:47:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:32,214 INFO L475 AbstractCegarLoop]: Abstraction has 1088 states and 1456 transitions. [2019-09-08 07:47:32,214 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:47:32,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1456 transitions. [2019-09-08 07:47:32,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:47:32,216 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:32,216 INFO L399 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, 1, 1, 1] [2019-09-08 07:47:32,217 INFO L418 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:32,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:32,217 INFO L82 PathProgramCache]: Analyzing trace with hash 430370341, now seen corresponding path program 1 times [2019-09-08 07:47:32,217 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:32,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:32,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:32,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:32,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:47:32,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:47:32,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:47:32,306 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:47:32,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:47:32,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:47:32,307 INFO L87 Difference]: Start difference. First operand 1088 states and 1456 transitions. Second operand 5 states. [2019-09-08 07:47:32,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:32,731 INFO L93 Difference]: Finished difference Result 3058 states and 4124 transitions. [2019-09-08 07:47:32,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:47:32,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-08 07:47:32,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:32,747 INFO L225 Difference]: With dead ends: 3058 [2019-09-08 07:47:32,747 INFO L226 Difference]: Without dead ends: 1998 [2019-09-08 07:47:32,752 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:47:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2019-09-08 07:47:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1996. [2019-09-08 07:47:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1996 states. [2019-09-08 07:47:32,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 2639 transitions. [2019-09-08 07:47:32,875 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 2639 transitions. Word has length 64 [2019-09-08 07:47:32,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:32,875 INFO L475 AbstractCegarLoop]: Abstraction has 1996 states and 2639 transitions. [2019-09-08 07:47:32,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:47:32,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 2639 transitions. [2019-09-08 07:47:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:47:32,877 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:32,877 INFO L399 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, 1, 1, 1] [2019-09-08 07:47:32,878 INFO L418 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1626115611, now seen corresponding path program 1 times [2019-09-08 07:47:32,878 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:32,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:32,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:32,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:32,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:33,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:47:33,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:47:33,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:47:33,045 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:47:33,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:47:33,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:47:33,047 INFO L87 Difference]: Start difference. First operand 1996 states and 2639 transitions. Second operand 9 states. [2019-09-08 07:47:34,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:34,820 INFO L93 Difference]: Finished difference Result 4184 states and 5671 transitions. [2019-09-08 07:47:34,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-08 07:47:34,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2019-09-08 07:47:34,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:34,839 INFO L225 Difference]: With dead ends: 4184 [2019-09-08 07:47:34,839 INFO L226 Difference]: Without dead ends: 2216 [2019-09-08 07:47:34,846 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2019-09-08 07:47:34,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2019-09-08 07:47:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 1988. [2019-09-08 07:47:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2019-09-08 07:47:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2611 transitions. [2019-09-08 07:47:35,058 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2611 transitions. Word has length 64 [2019-09-08 07:47:35,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:35,060 INFO L475 AbstractCegarLoop]: Abstraction has 1988 states and 2611 transitions. [2019-09-08 07:47:35,060 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:47:35,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2611 transitions. [2019-09-08 07:47:35,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:47:35,062 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:35,065 INFO L399 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, 1, 1, 1] [2019-09-08 07:47:35,065 INFO L418 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:35,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:35,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1591892951, now seen corresponding path program 1 times [2019-09-08 07:47:35,073 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:35,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:35,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:35,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:35,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:47:35,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:47:35,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:47:35,186 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:47:35,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:47:35,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:47:35,188 INFO L87 Difference]: Start difference. First operand 1988 states and 2611 transitions. Second operand 9 states. [2019-09-08 07:47:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:35,870 INFO L93 Difference]: Finished difference Result 3803 states and 5036 transitions. [2019-09-08 07:47:35,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:47:35,871 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2019-09-08 07:47:35,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:35,887 INFO L225 Difference]: With dead ends: 3803 [2019-09-08 07:47:35,887 INFO L226 Difference]: Without dead ends: 2349 [2019-09-08 07:47:35,893 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:47:35,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2019-09-08 07:47:36,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2013. [2019-09-08 07:47:36,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2013 states. [2019-09-08 07:47:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 2643 transitions. [2019-09-08 07:47:36,075 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 2643 transitions. Word has length 64 [2019-09-08 07:47:36,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:36,076 INFO L475 AbstractCegarLoop]: Abstraction has 2013 states and 2643 transitions. [2019-09-08 07:47:36,076 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:47:36,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 2643 transitions. [2019-09-08 07:47:36,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 07:47:36,078 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:36,078 INFO L399 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, 1, 1, 1, 1] [2019-09-08 07:47:36,078 INFO L418 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:36,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:36,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2094864628, now seen corresponding path program 1 times [2019-09-08 07:47:36,079 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:36,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:36,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:36,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:36,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:47:36,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:47:36,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 07:47:36,219 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:47:36,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:47:36,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:47:36,220 INFO L87 Difference]: Start difference. First operand 2013 states and 2643 transitions. Second operand 8 states. [2019-09-08 07:47:36,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:36,483 INFO L93 Difference]: Finished difference Result 2500 states and 3438 transitions. [2019-09-08 07:47:36,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:47:36,483 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2019-09-08 07:47:36,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:36,502 INFO L225 Difference]: With dead ends: 2500 [2019-09-08 07:47:36,503 INFO L226 Difference]: Without dead ends: 2498 [2019-09-08 07:47:36,506 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:47:36,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2019-09-08 07:47:36,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2229. [2019-09-08 07:47:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2229 states. [2019-09-08 07:47:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 2863 transitions. [2019-09-08 07:47:36,712 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 2863 transitions. Word has length 65 [2019-09-08 07:47:36,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:36,713 INFO L475 AbstractCegarLoop]: Abstraction has 2229 states and 2863 transitions. [2019-09-08 07:47:36,713 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:47:36,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 2863 transitions. [2019-09-08 07:47:36,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 07:47:36,714 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:36,714 INFO L399 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, 1, 1, 1, 1] [2019-09-08 07:47:36,715 INFO L418 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:36,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:36,715 INFO L82 PathProgramCache]: Analyzing trace with hash 534608897, now seen corresponding path program 1 times [2019-09-08 07:47:36,715 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:36,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:36,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:36,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:36,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:47:36,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:47:36,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 07:47:36,813 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 07:47:36,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 07:47:36,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 07:47:36,814 INFO L87 Difference]: Start difference. First operand 2229 states and 2863 transitions. Second operand 7 states. [2019-09-08 07:47:37,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:37,461 INFO L93 Difference]: Finished difference Result 4701 states and 6088 transitions. [2019-09-08 07:47:37,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 07:47:37,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-08 07:47:37,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:37,481 INFO L225 Difference]: With dead ends: 4701 [2019-09-08 07:47:37,482 INFO L226 Difference]: Without dead ends: 3064 [2019-09-08 07:47:37,490 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:47:37,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2019-09-08 07:47:37,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 3055. [2019-09-08 07:47:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3055 states. [2019-09-08 07:47:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 3903 transitions. [2019-09-08 07:47:37,704 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 3903 transitions. Word has length 65 [2019-09-08 07:47:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:37,704 INFO L475 AbstractCegarLoop]: Abstraction has 3055 states and 3903 transitions. [2019-09-08 07:47:37,704 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 07:47:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 3903 transitions. [2019-09-08 07:47:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-08 07:47:37,709 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:37,710 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:47:37,710 INFO L418 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:37,711 INFO L82 PathProgramCache]: Analyzing trace with hash -605840881, now seen corresponding path program 1 times [2019-09-08 07:47:37,711 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:37,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:37,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:37,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:37,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:47:37,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:47:37,839 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2019-09-08 07:47:37,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:38,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:47:38,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:47:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-08 07:47:38,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:47:38,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2019-09-08 07:47:38,272 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-08 07:47:38,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-08 07:47:38,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-08 07:47:38,276 INFO L87 Difference]: Start difference. First operand 3055 states and 3903 transitions. Second operand 10 states. [2019-09-08 07:47:39,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:39,858 INFO L93 Difference]: Finished difference Result 6936 states and 8922 transitions. [2019-09-08 07:47:39,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-08 07:47:39,858 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2019-09-08 07:47:39,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:39,886 INFO L225 Difference]: With dead ends: 6936 [2019-09-08 07:47:39,886 INFO L226 Difference]: Without dead ends: 3925 [2019-09-08 07:47:39,899 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2019-09-08 07:47:39,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2019-09-08 07:47:40,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3423. [2019-09-08 07:47:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3423 states. [2019-09-08 07:47:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 4301 transitions. [2019-09-08 07:47:40,268 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 4301 transitions. Word has length 103 [2019-09-08 07:47:40,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:40,268 INFO L475 AbstractCegarLoop]: Abstraction has 3423 states and 4301 transitions. [2019-09-08 07:47:40,268 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-08 07:47:40,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 4301 transitions. [2019-09-08 07:47:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-08 07:47:40,273 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:40,273 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:47:40,273 INFO L418 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:40,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:40,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1341535527, now seen corresponding path program 1 times [2019-09-08 07:47:40,274 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:40,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:40,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:40,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:40,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 07:47:40,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:47:40,540 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2019-09-08 07:47:40,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:40,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:47:40,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:47:40,957 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Stream closed [2019-09-08 07:47:40,974 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:47:40,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2019-09-08 07:47:40,975 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-08 07:47:40,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-08 07:47:40,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-09-08 07:47:40,977 INFO L87 Difference]: Start difference. First operand 3423 states and 4301 transitions. Second operand 20 states. [2019-09-08 07:47:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:44,637 INFO L93 Difference]: Finished difference Result 10952 states and 14278 transitions. [2019-09-08 07:47:44,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-08 07:47:44,638 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 103 [2019-09-08 07:47:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:44,697 INFO L225 Difference]: With dead ends: 10952 [2019-09-08 07:47:44,697 INFO L226 Difference]: Without dead ends: 9446 [2019-09-08 07:47:44,708 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=429, Invalid=1923, Unknown=0, NotChecked=0, Total=2352 [2019-09-08 07:47:44,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9446 states. [2019-09-08 07:47:45,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9446 to 9075. [2019-09-08 07:47:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9075 states. [2019-09-08 07:47:45,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9075 states to 9075 states and 11539 transitions. [2019-09-08 07:47:45,517 INFO L78 Accepts]: Start accepts. Automaton has 9075 states and 11539 transitions. Word has length 103 [2019-09-08 07:47:45,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:45,518 INFO L475 AbstractCegarLoop]: Abstraction has 9075 states and 11539 transitions. [2019-09-08 07:47:45,518 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-08 07:47:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 9075 states and 11539 transitions. [2019-09-08 07:47:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-08 07:47:45,524 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:45,524 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:47:45,525 INFO L418 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:45,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:45,526 INFO L82 PathProgramCache]: Analyzing trace with hash -622999899, now seen corresponding path program 1 times [2019-09-08 07:47:45,526 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:45,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:45,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:45,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:45,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:45,750 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 07:47:45,750 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:47:45,750 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:47:45,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:47:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:45,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:47:45,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:47:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 07:47:46,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:47:46,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2019-09-08 07:47:46,042 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 07:47:46,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 07:47:46,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2019-09-08 07:47:46,044 INFO L87 Difference]: Start difference. First operand 9075 states and 11539 transitions. Second operand 17 states. [2019-09-08 07:47:50,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:50,775 INFO L93 Difference]: Finished difference Result 17007 states and 22543 transitions. [2019-09-08 07:47:50,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-08 07:47:50,776 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 103 [2019-09-08 07:47:50,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:50,945 INFO L225 Difference]: With dead ends: 17007 [2019-09-08 07:47:50,945 INFO L226 Difference]: Without dead ends: 10364 [2019-09-08 07:47:50,965 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=441, Invalid=1629, Unknown=0, NotChecked=0, Total=2070 [2019-09-08 07:47:50,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10364 states. [2019-09-08 07:47:51,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10364 to 9874. [2019-09-08 07:47:51,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9874 states. [2019-09-08 07:47:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9874 states to 9874 states and 12711 transitions. [2019-09-08 07:47:51,648 INFO L78 Accepts]: Start accepts. Automaton has 9874 states and 12711 transitions. Word has length 103 [2019-09-08 07:47:51,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:51,649 INFO L475 AbstractCegarLoop]: Abstraction has 9874 states and 12711 transitions. [2019-09-08 07:47:51,649 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 07:47:51,649 INFO L276 IsEmpty]: Start isEmpty. Operand 9874 states and 12711 transitions. [2019-09-08 07:47:51,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-08 07:47:51,653 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:51,653 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:47:51,654 INFO L418 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:51,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:51,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1567936969, now seen corresponding path program 1 times [2019-09-08 07:47:51,654 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:51,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:51,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:51,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:51,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:51,770 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-08 07:47:51,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:47:51,770 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2019-09-08 07:47:51,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:51,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:47:51,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:47:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-08 07:47:51,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:47:51,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:47:51,948 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:47:51,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:47:51,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:47:51,949 INFO L87 Difference]: Start difference. First operand 9874 states and 12711 transitions. Second operand 8 states. [2019-09-08 07:47:52,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:52,921 INFO L93 Difference]: Finished difference Result 18399 states and 23791 transitions. [2019-09-08 07:47:52,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:47:52,922 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2019-09-08 07:47:52,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:52,957 INFO L225 Difference]: With dead ends: 18399 [2019-09-08 07:47:52,958 INFO L226 Difference]: Without dead ends: 9860 [2019-09-08 07:47:52,984 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:47:52,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9860 states. [2019-09-08 07:47:53,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9860 to 9218. [2019-09-08 07:47:53,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9218 states. [2019-09-08 07:47:53,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9218 states to 9218 states and 11525 transitions. [2019-09-08 07:47:53,513 INFO L78 Accepts]: Start accepts. Automaton has 9218 states and 11525 transitions. Word has length 104 [2019-09-08 07:47:53,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:53,513 INFO L475 AbstractCegarLoop]: Abstraction has 9218 states and 11525 transitions. [2019-09-08 07:47:53,514 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:47:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 9218 states and 11525 transitions. [2019-09-08 07:47:53,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:47:53,516 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:53,517 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:47:53,517 INFO L418 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:53,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1219268335, now seen corresponding path program 1 times [2019-09-08 07:47:53,658 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:53,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:53,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:53,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:53,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 07:47:54,010 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:47:54,010 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:47:54,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:47:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:54,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-08 07:47:54,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:47:54,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:47:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:47:54,814 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:47:54,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 31 [2019-09-08 07:47:54,817 INFO L454 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-09-08 07:47:54,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-09-08 07:47:54,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2019-09-08 07:47:54,819 INFO L87 Difference]: Start difference. First operand 9218 states and 11525 transitions. Second operand 31 states. [2019-09-08 07:48:01,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:01,239 INFO L93 Difference]: Finished difference Result 34370 states and 43219 transitions. [2019-09-08 07:48:01,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-09-08 07:48:01,240 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 105 [2019-09-08 07:48:01,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:01,346 INFO L225 Difference]: With dead ends: 34370 [2019-09-08 07:48:01,346 INFO L226 Difference]: Without dead ends: 26280 [2019-09-08 07:48:01,386 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1707 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1177, Invalid=5629, Unknown=0, NotChecked=0, Total=6806 [2019-09-08 07:48:01,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26280 states. [2019-09-08 07:48:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26280 to 23975. [2019-09-08 07:48:03,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23975 states. [2019-09-08 07:48:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23975 states to 23975 states and 30192 transitions. [2019-09-08 07:48:03,444 INFO L78 Accepts]: Start accepts. Automaton has 23975 states and 30192 transitions. Word has length 105 [2019-09-08 07:48:03,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:03,445 INFO L475 AbstractCegarLoop]: Abstraction has 23975 states and 30192 transitions. [2019-09-08 07:48:03,445 INFO L476 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-09-08 07:48:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 23975 states and 30192 transitions. [2019-09-08 07:48:03,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:48:03,450 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:03,451 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:03,451 INFO L418 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:03,451 INFO L82 PathProgramCache]: Analyzing trace with hash -51256305, now seen corresponding path program 1 times [2019-09-08 07:48:03,451 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:03,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:03,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:03,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:03,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 07:48:03,887 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:48:03,887 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:48:03,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:04,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 53 conjunts are in the unsatisfiable core [2019-09-08 07:48:04,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:48:05,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:48:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:48:05,788 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:48:05,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 44 [2019-09-08 07:48:05,789 INFO L454 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-09-08 07:48:05,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-09-08 07:48:05,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1747, Unknown=0, NotChecked=0, Total=1892 [2019-09-08 07:48:05,791 INFO L87 Difference]: Start difference. First operand 23975 states and 30192 transitions. Second operand 44 states. [2019-09-08 07:48:07,002 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-08 07:48:07,496 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-08 07:48:07,687 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-08 07:48:07,854 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-08 07:48:08,351 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-08 07:48:08,670 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-08 07:48:08,843 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-08 07:48:09,260 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2019-09-08 07:48:09,412 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2019-09-08 07:48:09,799 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2019-09-08 07:48:10,069 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2019-09-08 07:48:10,241 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2019-09-08 07:48:10,396 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-09-08 07:48:10,531 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2019-09-08 07:48:10,979 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2019-09-08 07:48:11,121 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-08 07:48:11,301 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2019-09-08 07:48:12,476 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-08 07:48:12,731 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-08 07:48:12,968 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-08 07:48:13,131 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-08 07:48:13,333 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-08 07:48:14,029 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-08 07:48:14,195 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-08 07:48:14,394 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-08 07:48:14,575 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-08 07:48:15,208 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-08 07:48:15,432 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-08 07:48:16,035 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-08 07:48:16,257 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-08 07:48:16,874 WARN L188 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-08 07:48:17,043 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-08 07:48:17,577 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-08 07:48:18,031 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-08 07:48:19,706 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-08 07:48:19,895 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-08 07:48:20,321 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-08 07:48:20,487 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-08 07:48:20,677 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-08 07:48:20,974 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-08 07:48:21,189 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-08 07:48:21,389 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-08 07:48:21,939 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2019-09-08 07:48:22,477 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-09-08 07:48:22,673 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-08 07:48:22,868 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-09-08 07:48:23,300 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-09-08 07:48:23,930 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-09-08 07:48:24,895 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2019-09-08 07:48:27,259 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 07:48:27,687 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-08 07:48:28,895 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-08 07:48:29,643 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 07:48:29,813 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-08 07:48:29,953 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-08 07:48:30,428 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2019-09-08 07:48:30,585 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 07:48:31,006 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-08 07:48:31,216 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2019-09-08 07:48:31,394 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2019-09-08 07:48:31,960 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-08 07:48:32,989 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2019-09-08 07:48:33,208 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-08 07:48:33,347 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-08 07:48:33,970 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 07:48:34,139 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2019-09-08 07:48:34,273 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-08 07:48:34,720 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-08 07:48:34,905 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-08 07:48:35,112 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2019-09-08 07:48:35,275 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-08 07:48:35,644 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2019-09-08 07:48:35,818 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-08 07:48:35,956 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-08 07:48:36,151 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2019-09-08 07:48:36,311 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2019-09-08 07:48:36,474 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2019-09-08 07:48:36,662 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-08 07:48:36,868 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2019-09-08 07:48:37,043 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-08 07:48:37,285 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 47 [2019-09-08 07:48:37,628 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2019-09-08 07:48:38,077 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-09-08 07:48:38,257 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-08 07:48:39,549 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-08 07:48:40,752 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-09-08 07:48:45,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:45,950 INFO L93 Difference]: Finished difference Result 142412 states and 182228 transitions. [2019-09-08 07:48:45,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2019-09-08 07:48:45,951 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 105 [2019-09-08 07:48:45,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:46,450 INFO L225 Difference]: With dead ends: 142412 [2019-09-08 07:48:46,450 INFO L226 Difference]: Without dead ends: 119733 [2019-09-08 07:48:46,554 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29123 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=9237, Invalid=66113, Unknown=0, NotChecked=0, Total=75350 [2019-09-08 07:48:46,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119733 states. [2019-09-08 07:48:57,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119733 to 111568. [2019-09-08 07:48:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111568 states. [2019-09-08 07:48:57,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111568 states to 111568 states and 142781 transitions. [2019-09-08 07:48:57,276 INFO L78 Accepts]: Start accepts. Automaton has 111568 states and 142781 transitions. Word has length 105 [2019-09-08 07:48:57,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:57,276 INFO L475 AbstractCegarLoop]: Abstraction has 111568 states and 142781 transitions. [2019-09-08 07:48:57,277 INFO L476 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-09-08 07:48:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 111568 states and 142781 transitions. [2019-09-08 07:48:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:48:57,288 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:57,288 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:57,288 INFO L418 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:57,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:57,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2036365007, now seen corresponding path program 1 times [2019-09-08 07:48:57,289 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:57,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:57,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:57,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:57,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 07:48:57,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:48:57,553 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:48:57,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:57,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 74 conjunts are in the unsatisfiable core [2019-09-08 07:48:57,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:48:58,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:48:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:48:59,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:48:59,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28] total 44 [2019-09-08 07:48:59,983 INFO L454 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-09-08 07:48:59,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-09-08 07:48:59,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1666, Unknown=0, NotChecked=0, Total=1892 [2019-09-08 07:48:59,984 INFO L87 Difference]: Start difference. First operand 111568 states and 142781 transitions. Second operand 44 states. [2019-09-08 07:49:03,011 WARN L188 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-09-08 07:49:04,117 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 07:49:04,604 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2019-09-08 07:49:04,807 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:49:05,465 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2019-09-08 07:49:05,660 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-08 07:49:06,495 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-08 07:49:06,915 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-08 07:49:07,996 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 07:49:08,325 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-08 07:49:10,337 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-08 07:49:16,620 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:49:17,971 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2019-09-08 07:49:18,186 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 07:49:18,346 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:49:19,403 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2019-09-08 07:49:19,620 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 07:49:31,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:49:31,408 INFO L93 Difference]: Finished difference Result 286990 states and 365884 transitions. [2019-09-08 07:49:31,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2019-09-08 07:49:31,408 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 105 [2019-09-08 07:49:31,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:49:32,096 INFO L225 Difference]: With dead ends: 286990 [2019-09-08 07:49:32,097 INFO L226 Difference]: Without dead ends: 180741 [2019-09-08 07:49:32,324 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11678 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=4821, Invalid=28121, Unknown=0, NotChecked=0, Total=32942 [2019-09-08 07:49:32,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180741 states. [2019-09-08 07:49:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180741 to 171367. [2019-09-08 07:49:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171367 states. [2019-09-08 07:49:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171367 states to 171367 states and 218863 transitions. [2019-09-08 07:49:48,824 INFO L78 Accepts]: Start accepts. Automaton has 171367 states and 218863 transitions. Word has length 105 [2019-09-08 07:49:48,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:49:48,825 INFO L475 AbstractCegarLoop]: Abstraction has 171367 states and 218863 transitions. [2019-09-08 07:49:48,825 INFO L476 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-09-08 07:49:48,825 INFO L276 IsEmpty]: Start isEmpty. Operand 171367 states and 218863 transitions. [2019-09-08 07:49:48,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:49:48,832 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:49:48,832 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:49:48,833 INFO L418 AbstractCegarLoop]: === Iteration 17 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:49:48,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:49:48,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1084841209, now seen corresponding path program 1 times [2019-09-08 07:49:48,833 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:49:48,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:49:48,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:48,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:49:48,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:49:48,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:49:48,902 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:49:48,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:49:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:49,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:49:49,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:49:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:49:49,079 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:49:49,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2019-09-08 07:49:49,081 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 07:49:49,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 07:49:49,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:49:49,082 INFO L87 Difference]: Start difference. First operand 171367 states and 218863 transitions. Second operand 11 states. [2019-09-08 07:50:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:50:00,522 INFO L93 Difference]: Finished difference Result 299832 states and 383480 transitions. [2019-09-08 07:50:00,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-08 07:50:00,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2019-09-08 07:50:00,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:50:01,002 INFO L225 Difference]: With dead ends: 299832 [2019-09-08 07:50:01,002 INFO L226 Difference]: Without dead ends: 133012 [2019-09-08 07:50:01,244 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2019-09-08 07:50:01,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133012 states. [2019-09-08 07:50:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133012 to 122684. [2019-09-08 07:50:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122684 states. [2019-09-08 07:50:13,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122684 states to 122684 states and 152759 transitions. [2019-09-08 07:50:13,515 INFO L78 Accepts]: Start accepts. Automaton has 122684 states and 152759 transitions. Word has length 105 [2019-09-08 07:50:13,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:50:13,516 INFO L475 AbstractCegarLoop]: Abstraction has 122684 states and 152759 transitions. [2019-09-08 07:50:13,516 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 07:50:13,516 INFO L276 IsEmpty]: Start isEmpty. Operand 122684 states and 152759 transitions. [2019-09-08 07:50:13,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:50:13,524 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:50:13,525 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:50:13,525 INFO L418 AbstractCegarLoop]: === Iteration 18 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:50:13,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:50:13,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1935832783, now seen corresponding path program 1 times [2019-09-08 07:50:13,525 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:50:13,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:50:13,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:13,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:50:13,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:50:13,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:50:13,589 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:50:13,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:50:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:13,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:50:13,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:50:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:50:13,817 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:50:13,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-09-08 07:50:13,821 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 07:50:13,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 07:50:13,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:50:13,822 INFO L87 Difference]: Start difference. First operand 122684 states and 152759 transitions. Second operand 12 states. [2019-09-08 07:50:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:50:20,737 INFO L93 Difference]: Finished difference Result 206591 states and 258118 transitions. [2019-09-08 07:50:20,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-08 07:50:20,737 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2019-09-08 07:50:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:50:21,062 INFO L225 Difference]: With dead ends: 206591 [2019-09-08 07:50:21,062 INFO L226 Difference]: Without dead ends: 87830 [2019-09-08 07:50:21,244 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=457, Invalid=1895, Unknown=0, NotChecked=0, Total=2352 [2019-09-08 07:50:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87830 states. [2019-09-08 07:50:28,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87830 to 86770. [2019-09-08 07:50:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86770 states. [2019-09-08 07:50:28,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86770 states to 86770 states and 105589 transitions. [2019-09-08 07:50:28,447 INFO L78 Accepts]: Start accepts. Automaton has 86770 states and 105589 transitions. Word has length 105 [2019-09-08 07:50:28,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:50:28,448 INFO L475 AbstractCegarLoop]: Abstraction has 86770 states and 105589 transitions. [2019-09-08 07:50:28,448 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 07:50:28,448 INFO L276 IsEmpty]: Start isEmpty. Operand 86770 states and 105589 transitions. [2019-09-08 07:50:28,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:50:28,453 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:50:28,453 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:50:28,454 INFO L418 AbstractCegarLoop]: === Iteration 19 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:50:28,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:50:28,454 INFO L82 PathProgramCache]: Analyzing trace with hash -222523953, now seen corresponding path program 1 times [2019-09-08 07:50:28,454 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:50:28,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:50:28,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:28,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:50:28,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:28,628 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 07:50:28,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:50:28,629 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:50:28,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:50:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:28,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:50:28,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:50:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:50:28,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:50:28,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2019-09-08 07:50:28,868 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-08 07:50:28,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-08 07:50:28,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2019-09-08 07:50:28,868 INFO L87 Difference]: Start difference. First operand 86770 states and 105589 transitions. Second operand 21 states. [2019-09-08 07:50:46,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:50:46,077 INFO L93 Difference]: Finished difference Result 216682 states and 262590 transitions. [2019-09-08 07:50:46,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2019-09-08 07:50:46,077 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 105 [2019-09-08 07:50:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:50:46,399 INFO L225 Difference]: With dead ends: 216682 [2019-09-08 07:50:46,399 INFO L226 Difference]: Without dead ends: 129999 [2019-09-08 07:50:46,497 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2550 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1668, Invalid=6164, Unknown=0, NotChecked=0, Total=7832 [2019-09-08 07:50:46,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129999 states. [2019-09-08 07:50:55,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129999 to 124840. [2019-09-08 07:50:55,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124840 states. [2019-09-08 07:50:56,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124840 states to 124840 states and 148832 transitions. [2019-09-08 07:50:56,028 INFO L78 Accepts]: Start accepts. Automaton has 124840 states and 148832 transitions. Word has length 105 [2019-09-08 07:50:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:50:56,028 INFO L475 AbstractCegarLoop]: Abstraction has 124840 states and 148832 transitions. [2019-09-08 07:50:56,028 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-08 07:50:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 124840 states and 148832 transitions. [2019-09-08 07:50:56,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:50:56,032 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:50:56,033 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:50:56,033 INFO L418 AbstractCegarLoop]: === Iteration 20 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:50:56,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:50:56,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1102318597, now seen corresponding path program 1 times [2019-09-08 07:50:56,033 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:50:56,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:50:56,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:56,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:50:56,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 07:50:57,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:50:57,040 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:50:57,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:50:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:57,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:50:57,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:50:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:50:57,444 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:50:57,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 9] total 35 [2019-09-08 07:50:57,446 INFO L454 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-09-08 07:50:57,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-09-08 07:50:57,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2019-09-08 07:50:57,447 INFO L87 Difference]: Start difference. First operand 124840 states and 148832 transitions. Second operand 35 states. [2019-09-08 07:50:57,784 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-09-08 07:50:58,667 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 07:50:58,934 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-08 07:50:59,649 WARN L188 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2019-09-08 07:50:59,805 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2019-09-08 07:50:59,997 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:51:00,266 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2019-09-08 07:51:00,429 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2019-09-08 07:51:00,615 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2019-09-08 07:51:00,810 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2019-09-08 07:51:00,974 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2019-09-08 07:51:01,188 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2019-09-08 07:51:01,433 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:51:01,646 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2019-09-08 07:51:01,894 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2019-09-08 07:51:02,143 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2019-09-08 07:51:02,359 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2019-09-08 07:51:02,555 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2019-09-08 07:51:02,776 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2019-09-08 07:51:03,008 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2019-09-08 07:51:03,287 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-08 07:51:03,481 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:51:03,709 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2019-09-08 07:51:03,912 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2019-09-08 07:51:04,150 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2019-09-08 07:51:04,384 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2019-09-08 07:51:04,629 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2019-09-08 07:51:04,834 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2019-09-08 07:51:05,073 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-08 07:51:05,322 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2019-09-08 07:51:05,567 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2019-09-08 07:51:05,785 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2019-09-08 07:51:05,933 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2019-09-08 07:51:06,169 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2019-09-08 07:51:06,425 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2019-09-08 07:51:07,225 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:51:07,430 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2019-09-08 07:51:07,669 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2019-09-08 07:51:07,880 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2019-09-08 07:51:08,046 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2019-09-08 07:51:08,239 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 07:51:08,424 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2019-09-08 07:51:08,644 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2019-09-08 07:51:08,986 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2019-09-08 07:51:09,187 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2019-09-08 07:51:09,412 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-08 07:51:09,649 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-08 07:51:11,652 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2019-09-08 07:51:12,279 WARN L188 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-08 07:51:12,709 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:51:12,998 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-08 07:51:13,203 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2019-09-08 07:51:13,404 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-08 07:51:13,798 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 07:51:13,979 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:51:14,625 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 07:51:14,816 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 07:51:15,024 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2019-09-08 07:51:15,721 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-08 07:51:16,105 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2019-09-08 07:51:16,520 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2019-09-08 07:51:17,018 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2019-09-08 07:51:17,303 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2019-09-08 07:51:17,733 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 07:51:18,142 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 07:51:18,468 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:18,663 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 07:51:20,134 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2019-09-08 07:51:20,325 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-08 07:51:20,837 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 07:51:20,998 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-08 07:51:21,160 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2019-09-08 07:51:21,338 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 07:51:21,628 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-08 07:51:21,779 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2019-09-08 07:51:21,955 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:51:22,442 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-08 07:51:22,605 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:51:23,160 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:24,597 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-08 07:51:25,236 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-08 07:51:25,417 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-08 07:51:25,573 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:25,831 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 07:51:25,999 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-08 07:51:26,161 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:51:26,349 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 07:51:26,566 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-08 07:51:26,840 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 07:51:27,064 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2019-09-08 07:51:27,265 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 07:51:27,406 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:51:27,622 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-09-08 07:51:27,850 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2019-09-08 07:51:28,008 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-08 07:51:28,205 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-08 07:51:28,479 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2019-09-08 07:51:28,761 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2019-09-08 07:51:29,026 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-08 07:51:29,253 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2019-09-08 07:51:29,517 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-08 07:51:29,704 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 07:51:29,905 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2019-09-08 07:51:30,081 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-08 07:51:30,485 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:30,767 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:51:30,979 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2019-09-08 07:51:31,179 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2019-09-08 07:51:31,380 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2019-09-08 07:51:31,665 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 07:51:31,886 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2019-09-08 07:51:32,083 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2019-09-08 07:51:32,361 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-08 07:51:32,544 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-08 07:51:32,863 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-08 07:51:33,097 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2019-09-08 07:51:33,421 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-08 07:51:33,754 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2019-09-08 07:51:34,166 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-08 07:51:34,421 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2019-09-08 07:51:34,605 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-08 07:51:34,815 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-08 07:51:35,044 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-08 07:51:36,111 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-08 07:51:36,308 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-08 07:51:36,527 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 07:51:36,702 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2019-09-08 07:51:36,879 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-08 07:51:37,039 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:37,191 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 07:51:37,594 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-08 07:51:37,831 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 07:51:38,007 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2019-09-08 07:51:38,189 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-09-08 07:51:38,353 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-08 07:51:38,606 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2019-09-08 07:51:38,747 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 07:51:39,165 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:51:39,304 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-08 07:51:39,484 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-08 07:51:39,906 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:51:40,075 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-08 07:51:40,721 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 07:51:41,058 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-08 07:51:41,268 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-08 07:51:41,731 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-08 07:51:41,924 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2019-09-08 07:51:42,555 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2019-09-08 07:51:43,366 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-08 07:51:44,052 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-08 07:51:44,366 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 07:51:44,541 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 07:51:44,721 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 07:51:45,281 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:45,457 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-08 07:51:45,624 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 07:51:45,801 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:45,977 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-08 07:51:46,154 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:51:46,366 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-08 07:51:46,627 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-08 07:51:47,092 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-08 07:52:04,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:52:04,774 INFO L93 Difference]: Finished difference Result 308346 states and 366219 transitions. [2019-09-08 07:52:04,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2019-09-08 07:52:04,775 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 105 [2019-09-08 07:52:04,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:52:05,224 INFO L225 Difference]: With dead ends: 308346 [2019-09-08 07:52:05,224 INFO L226 Difference]: Without dead ends: 185974 [2019-09-08 07:52:05,343 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31054 ImplicationChecksByTransitivity, 38.9s TimeCoverageRelationStatistics Valid=7912, Invalid=70208, Unknown=0, NotChecked=0, Total=78120 [2019-09-08 07:52:05,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185974 states. [2019-09-08 07:52:19,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185974 to 170983. [2019-09-08 07:52:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170983 states. [2019-09-08 07:52:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170983 states to 170983 states and 203441 transitions. [2019-09-08 07:52:19,862 INFO L78 Accepts]: Start accepts. Automaton has 170983 states and 203441 transitions. Word has length 105 [2019-09-08 07:52:19,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:52:19,863 INFO L475 AbstractCegarLoop]: Abstraction has 170983 states and 203441 transitions. [2019-09-08 07:52:19,863 INFO L476 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-09-08 07:52:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 170983 states and 203441 transitions. [2019-09-08 07:52:19,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 07:52:19,868 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:52:19,868 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:52:19,868 INFO L418 AbstractCegarLoop]: === Iteration 21 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:52:19,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:52:19,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1862924703, now seen corresponding path program 1 times [2019-09-08 07:52:19,869 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:52:19,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:52:19,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:19,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:19,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:23,118 WARN L188 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2019-09-08 07:52:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 07:52:23,821 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:52:23,821 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:52:23,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:23,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 54 conjunts are in the unsatisfiable core [2019-09-08 07:52:23,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:52:24,450 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:24,816 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:24,817 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:24,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:25,065 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2019-09-08 07:52:25,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:25,425 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 40 [2019-09-08 07:52:25,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 07:52:26,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:52:26,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23] total 49 [2019-09-08 07:52:26,077 INFO L454 AbstractCegarLoop]: Interpolant automaton has 49 states [2019-09-08 07:52:26,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2019-09-08 07:52:26,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=2207, Unknown=0, NotChecked=0, Total=2352 [2019-09-08 07:52:26,078 INFO L87 Difference]: Start difference. First operand 170983 states and 203441 transitions. Second operand 49 states. [2019-09-08 07:52:28,282 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2019-09-08 07:52:28,588 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2019-09-08 07:52:28,842 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2019-09-08 07:52:29,135 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2019-09-08 07:52:29,511 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2019-09-08 07:52:29,685 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2019-09-08 07:52:30,173 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 57 [2019-09-08 07:52:30,382 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 49 [2019-09-08 07:52:30,744 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 45 [2019-09-08 07:52:30,974 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2019-09-08 07:52:31,306 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2019-09-08 07:52:31,871 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 59 [2019-09-08 07:52:32,148 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2019-09-08 07:52:32,389 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2019-09-08 07:52:33,057 WARN L188 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 59 [2019-09-08 07:52:33,339 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2019-09-08 07:52:33,589 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2019-09-08 07:52:33,741 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2019-09-08 07:52:34,225 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-08 07:52:34,645 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2019-09-08 07:52:34,823 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2019-09-08 07:52:35,757 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2019-09-08 07:52:36,067 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2019-09-08 07:52:36,385 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-08 07:52:37,198 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2019-09-08 07:52:37,745 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2019-09-08 07:52:38,221 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2019-09-08 07:52:38,741 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2019-09-08 07:52:39,372 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2019-09-08 07:52:39,681 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2019-09-08 07:52:41,364 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2019-09-08 07:52:42,352 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2019-09-08 07:52:45,042 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2019-09-08 07:52:45,464 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-08 07:52:45,949 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2019-09-08 07:52:46,201 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2019-09-08 07:52:47,121 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2019-09-08 07:52:47,712 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 64 [2019-09-08 07:52:47,931 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 47 [2019-09-08 07:52:48,343 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-09-08 07:52:48,662 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2019-09-08 07:52:49,024 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2019-09-08 07:52:50,160 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 66 [2019-09-08 07:52:50,402 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2019-09-08 07:52:50,904 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2019-09-08 07:52:51,346 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 74 [2019-09-08 07:52:51,598 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2019-09-08 07:52:51,959 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2019-09-08 07:52:52,543 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-08 07:52:52,935 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-08 07:52:53,102 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2019-09-08 07:52:54,534 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-08 07:52:55,024 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-09-08 07:52:55,918 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2019-09-08 07:52:56,204 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-09-08 07:53:09,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:53:09,339 INFO L93 Difference]: Finished difference Result 285233 states and 338658 transitions. [2019-09-08 07:53:09,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2019-09-08 07:53:09,339 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 106 [2019-09-08 07:53:09,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:53:09,741 INFO L225 Difference]: With dead ends: 285233 [2019-09-08 07:53:09,741 INFO L226 Difference]: Without dead ends: 143503 [2019-09-08 07:53:09,886 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13628 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=4296, Invalid=36306, Unknown=0, NotChecked=0, Total=40602 [2019-09-08 07:53:09,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143503 states. [2019-09-08 07:53:25,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143503 to 136354. [2019-09-08 07:53:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136354 states. [2019-09-08 07:53:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136354 states to 136354 states and 161601 transitions. [2019-09-08 07:53:25,739 INFO L78 Accepts]: Start accepts. Automaton has 136354 states and 161601 transitions. Word has length 106 [2019-09-08 07:53:25,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:53:25,739 INFO L475 AbstractCegarLoop]: Abstraction has 136354 states and 161601 transitions. [2019-09-08 07:53:25,739 INFO L476 AbstractCegarLoop]: Interpolant automaton has 49 states. [2019-09-08 07:53:25,739 INFO L276 IsEmpty]: Start isEmpty. Operand 136354 states and 161601 transitions. [2019-09-08 07:53:25,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 07:53:25,744 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:53:25,744 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:53:25,744 INFO L418 AbstractCegarLoop]: === Iteration 22 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:53:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:53:25,745 INFO L82 PathProgramCache]: Analyzing trace with hash -14203873, now seen corresponding path program 1 times [2019-09-08 07:53:25,745 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:53:25,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:53:25,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:53:25,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:53:25,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:53:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:53:25,909 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 07:53:25,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:53:25,909 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:53:25,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:53:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:53:26,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-08 07:53:26,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:53:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:53:26,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:53:26,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 24 [2019-09-08 07:53:26,196 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-08 07:53:26,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-08 07:53:26,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2019-09-08 07:53:26,196 INFO L87 Difference]: Start difference. First operand 136354 states and 161601 transitions. Second operand 24 states. [2019-09-08 07:53:43,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:53:43,321 INFO L93 Difference]: Finished difference Result 267976 states and 318368 transitions. [2019-09-08 07:53:43,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-09-08 07:53:43,323 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 106 [2019-09-08 07:53:43,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:53:43,767 INFO L225 Difference]: With dead ends: 267976 [2019-09-08 07:53:43,767 INFO L226 Difference]: Without dead ends: 168152 [2019-09-08 07:53:43,874 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1567, Invalid=6265, Unknown=0, NotChecked=0, Total=7832 [2019-09-08 07:53:43,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168152 states. [2019-09-08 07:54:00,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168152 to 166055. [2019-09-08 07:54:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166055 states. [2019-09-08 07:54:00,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166055 states to 166055 states and 196166 transitions. [2019-09-08 07:54:00,700 INFO L78 Accepts]: Start accepts. Automaton has 166055 states and 196166 transitions. Word has length 106 [2019-09-08 07:54:00,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:54:00,700 INFO L475 AbstractCegarLoop]: Abstraction has 166055 states and 196166 transitions. [2019-09-08 07:54:00,700 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-08 07:54:00,700 INFO L276 IsEmpty]: Start isEmpty. Operand 166055 states and 196166 transitions. [2019-09-08 07:54:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 07:54:00,703 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:54:00,703 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:54:00,703 INFO L418 AbstractCegarLoop]: === Iteration 23 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:54:00,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:54:00,703 INFO L82 PathProgramCache]: Analyzing trace with hash 346145633, now seen corresponding path program 1 times [2019-09-08 07:54:00,703 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:54:00,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:54:00,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:54:00,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:54:00,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:54:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:54:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 07:54:00,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:54:00,997 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:54:01,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:54:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:54:01,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-08 07:54:01,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:54:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-08 07:54:01,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:54:01,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2019-09-08 07:54:01,308 INFO L454 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-09-08 07:54:01,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-09-08 07:54:01,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2019-09-08 07:54:01,309 INFO L87 Difference]: Start difference. First operand 166055 states and 196166 transitions. Second operand 27 states. [2019-09-08 07:54:06,868 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2019-09-08 07:54:10,173 WARN L188 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2019-09-08 07:54:35,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:54:35,695 INFO L93 Difference]: Finished difference Result 295767 states and 350324 transitions. [2019-09-08 07:54:35,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2019-09-08 07:54:35,695 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2019-09-08 07:54:35,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:54:36,147 INFO L225 Difference]: With dead ends: 295767 [2019-09-08 07:54:36,147 INFO L226 Difference]: Without dead ends: 217087 [2019-09-08 07:54:36,244 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6708 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=3441, Invalid=15191, Unknown=0, NotChecked=0, Total=18632 [2019-09-08 07:54:36,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217087 states. [2019-09-08 07:54:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217087 to 205045. [2019-09-08 07:54:53,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205045 states. [2019-09-08 07:54:54,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205045 states to 205045 states and 242622 transitions. [2019-09-08 07:54:54,009 INFO L78 Accepts]: Start accepts. Automaton has 205045 states and 242622 transitions. Word has length 106 [2019-09-08 07:54:54,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:54:54,010 INFO L475 AbstractCegarLoop]: Abstraction has 205045 states and 242622 transitions. [2019-09-08 07:54:54,010 INFO L476 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-09-08 07:54:54,010 INFO L276 IsEmpty]: Start isEmpty. Operand 205045 states and 242622 transitions. [2019-09-08 07:54:54,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-09-08 07:54:54,031 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:54:54,031 INFO L399 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:54:54,032 INFO L418 AbstractCegarLoop]: === Iteration 24 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:54:54,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:54:54,032 INFO L82 PathProgramCache]: Analyzing trace with hash -192315662, now seen corresponding path program 1 times [2019-09-08 07:54:54,032 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:54:54,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:54:54,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:54:54,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:54:54,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:54:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:54:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 55 proven. 19 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2019-09-08 07:54:54,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:54:54,735 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:54:54,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:54:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:54:54,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:54:54,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:54:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 159 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-08 07:54:54,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:54:54,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-09-08 07:54:54,960 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:54:54,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:54:54,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:54:54,961 INFO L87 Difference]: Start difference. First operand 205045 states and 242622 transitions. Second operand 8 states. [2019-09-08 07:55:14,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:55:14,364 INFO L93 Difference]: Finished difference Result 388509 states and 462046 transitions. [2019-09-08 07:55:14,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:55:14,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2019-09-08 07:55:14,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:55:14,831 INFO L225 Difference]: With dead ends: 388509 [2019-09-08 07:55:14,831 INFO L226 Difference]: Without dead ends: 207698 [2019-09-08 07:55:14,993 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:55:15,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207698 states. [2019-09-08 07:55:37,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207698 to 201911. [2019-09-08 07:55:37,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201911 states. [2019-09-08 07:55:38,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201911 states to 201911 states and 239282 transitions. [2019-09-08 07:55:38,303 INFO L78 Accepts]: Start accepts. Automaton has 201911 states and 239282 transitions. Word has length 184 [2019-09-08 07:55:38,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:55:38,304 INFO L475 AbstractCegarLoop]: Abstraction has 201911 states and 239282 transitions. [2019-09-08 07:55:38,304 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:55:38,304 INFO L276 IsEmpty]: Start isEmpty. Operand 201911 states and 239282 transitions. [2019-09-08 07:55:38,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-09-08 07:55:38,325 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:55:38,326 INFO L399 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:55:38,326 INFO L418 AbstractCegarLoop]: === Iteration 25 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:55:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:55:38,326 INFO L82 PathProgramCache]: Analyzing trace with hash 378578802, now seen corresponding path program 1 times [2019-09-08 07:55:38,326 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:55:38,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:55:38,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:55:38,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:55:38,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:55:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:55:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 59 proven. 19 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-09-08 07:55:38,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:55:38,424 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:55:38,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:55:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:55:38,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:55:38,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:55:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 179 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-08 07:55:38,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:55:38,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-09-08 07:55:38,602 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:55:38,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:55:38,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:55:38,603 INFO L87 Difference]: Start difference. First operand 201911 states and 239282 transitions. Second operand 8 states. [2019-09-08 07:55:56,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:55:56,725 INFO L93 Difference]: Finished difference Result 316428 states and 376377 transitions. [2019-09-08 07:55:56,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:55:56,725 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2019-09-08 07:55:56,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:55:57,046 INFO L225 Difference]: With dead ends: 316428 [2019-09-08 07:55:57,047 INFO L226 Difference]: Without dead ends: 151668 [2019-09-08 07:55:57,191 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:55:57,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151668 states. [2019-09-08 07:56:10,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151668 to 151586. [2019-09-08 07:56:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151586 states. [2019-09-08 07:56:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151586 states to 151586 states and 179112 transitions. [2019-09-08 07:56:10,350 INFO L78 Accepts]: Start accepts. Automaton has 151586 states and 179112 transitions. Word has length 184 [2019-09-08 07:56:10,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:56:10,350 INFO L475 AbstractCegarLoop]: Abstraction has 151586 states and 179112 transitions. [2019-09-08 07:56:10,350 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:56:10,350 INFO L276 IsEmpty]: Start isEmpty. Operand 151586 states and 179112 transitions. [2019-09-08 07:56:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-09-08 07:56:10,372 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:56:10,373 INFO L399 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:56:10,373 INFO L418 AbstractCegarLoop]: === Iteration 26 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:56:10,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:56:10,373 INFO L82 PathProgramCache]: Analyzing trace with hash -34853141, now seen corresponding path program 1 times [2019-09-08 07:56:10,374 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:56:10,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:56:10,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:56:10,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:56:10,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:56:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:56:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 51 proven. 37 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-09-08 07:56:10,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:56:10,608 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:56:10,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:56:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:56:10,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-08 07:56:10,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:56:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-09-08 07:56:10,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:56:10,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 23 [2019-09-08 07:56:10,944 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-08 07:56:10,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-08 07:56:10,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2019-09-08 07:56:10,945 INFO L87 Difference]: Start difference. First operand 151586 states and 179112 transitions. Second operand 23 states. [2019-09-08 07:56:24,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:56:24,079 INFO L93 Difference]: Finished difference Result 204423 states and 242517 transitions. [2019-09-08 07:56:24,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2019-09-08 07:56:24,080 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 184 [2019-09-08 07:56:24,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:56:24,269 INFO L225 Difference]: With dead ends: 204423 [2019-09-08 07:56:24,269 INFO L226 Difference]: Without dead ends: 89105 [2019-09-08 07:56:24,378 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1585, Invalid=5725, Unknown=0, NotChecked=0, Total=7310 [2019-09-08 07:56:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89105 states. [2019-09-08 07:56:35,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89105 to 73146. [2019-09-08 07:56:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73146 states. [2019-09-08 07:56:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73146 states to 73146 states and 86531 transitions. [2019-09-08 07:56:35,480 INFO L78 Accepts]: Start accepts. Automaton has 73146 states and 86531 transitions. Word has length 184 [2019-09-08 07:56:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:56:35,481 INFO L475 AbstractCegarLoop]: Abstraction has 73146 states and 86531 transitions. [2019-09-08 07:56:35,481 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-08 07:56:35,481 INFO L276 IsEmpty]: Start isEmpty. Operand 73146 states and 86531 transitions. [2019-09-08 07:56:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-09-08 07:56:35,491 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:56:35,491 INFO L399 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:56:35,491 INFO L418 AbstractCegarLoop]: === Iteration 27 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:56:35,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:56:35,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1595499053, now seen corresponding path program 1 times [2019-09-08 07:56:35,492 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:56:35,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:56:35,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:56:35,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:56:35,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:56:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:56:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 57 proven. 19 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2019-09-08 07:56:35,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:56:35,579 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:56:35,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:56:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:56:35,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 35 conjunts are in the unsatisfiable core [2019-09-08 07:56:35,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:56:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 155 proven. 14 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-09-08 07:56:35,902 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:56:35,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14] total 15 [2019-09-08 07:56:35,903 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 07:56:35,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 07:56:35,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-09-08 07:56:35,904 INFO L87 Difference]: Start difference. First operand 73146 states and 86531 transitions. Second operand 15 states. [2019-09-08 07:56:43,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:56:43,582 INFO L93 Difference]: Finished difference Result 114469 states and 135955 transitions. [2019-09-08 07:56:43,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-08 07:56:43,583 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 184 [2019-09-08 07:56:43,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:56:43,701 INFO L225 Difference]: With dead ends: 114469 [2019-09-08 07:56:43,701 INFO L226 Difference]: Without dead ends: 57292 [2019-09-08 07:56:43,758 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=647, Invalid=2659, Unknown=0, NotChecked=0, Total=3306 [2019-09-08 07:56:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57292 states. [2019-09-08 07:56:49,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57292 to 56328. [2019-09-08 07:56:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56328 states. [2019-09-08 07:56:49,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56328 states to 56328 states and 66580 transitions. [2019-09-08 07:56:49,215 INFO L78 Accepts]: Start accepts. Automaton has 56328 states and 66580 transitions. Word has length 184 [2019-09-08 07:56:49,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:56:49,215 INFO L475 AbstractCegarLoop]: Abstraction has 56328 states and 66580 transitions. [2019-09-08 07:56:49,216 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 07:56:49,216 INFO L276 IsEmpty]: Start isEmpty. Operand 56328 states and 66580 transitions. [2019-09-08 07:56:49,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-09-08 07:56:49,226 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:56:49,227 INFO L399 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, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-08 07:56:49,227 INFO L418 AbstractCegarLoop]: === Iteration 28 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:56:49,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:56:49,227 INFO L82 PathProgramCache]: Analyzing trace with hash 167253542, now seen corresponding path program 1 times [2019-09-08 07:56:49,227 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:56:49,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:56:49,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:56:49,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:56:49,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:56:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:56:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 20 proven. 60 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-09-08 07:56:49,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:56:49,784 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:56:49,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:56:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:56:49,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 34 conjunts are in the unsatisfiable core [2019-09-08 07:56:49,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:56:50,139 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:56:50,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:56:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 62 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:56:50,614 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:56:50,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18] total 25 [2019-09-08 07:56:50,615 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-08 07:56:50,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-08 07:56:50,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2019-09-08 07:56:50,615 INFO L87 Difference]: Start difference. First operand 56328 states and 66580 transitions. Second operand 25 states. [2019-09-08 07:56:50,906 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:56:51,521 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 07:56:51,740 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:56:52,661 WARN L188 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-08 07:56:52,860 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-08 07:56:53,196 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-09-08 07:56:53,451 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-08 07:56:53,733 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:56:53,896 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-08 07:56:54,041 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:56:54,378 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 07:56:54,634 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-08 07:56:55,580 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-08 07:56:55,871 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-08 07:56:56,021 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 07:56:56,385 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:56:56,710 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:56:56,907 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-08 07:56:57,501 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:56:57,691 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 07:56:58,340 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-08 07:56:58,547 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-08 07:56:59,057 WARN L188 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-08 07:56:59,356 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-08 07:56:59,556 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-08 07:56:59,976 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:57:00,211 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-09-08 07:57:00,625 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 07:57:00,862 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-08 07:57:01,307 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:57:01,576 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-08 07:57:01,765 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 07:57:01,988 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:57:02,394 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-08 07:57:04,079 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-08 07:57:04,301 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-08 07:57:04,633 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 07:57:04,910 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:57:05,104 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:57:05,464 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-08 07:57:06,809 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-08 07:57:07,170 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-08 07:57:07,471 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 07:57:07,663 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-08 07:57:07,988 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 07:57:08,406 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-08 07:57:08,733 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-09-08 07:57:08,984 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-08 07:57:09,236 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 07:57:09,776 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-08 07:57:10,026 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 07:57:10,470 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-08 07:57:10,987 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-08 07:57:11,955 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-08 07:57:12,438 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:57:12,871 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-09-08 07:57:13,209 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2019-09-08 07:57:14,154 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-08 07:57:14,433 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-08 07:57:14,882 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:57:15,101 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-08 07:57:15,283 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-08 07:57:15,708 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 07:57:16,185 WARN L188 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-08 07:57:16,380 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-08 07:57:16,769 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 07:57:16,967 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:57:17,180 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:57:17,486 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-08 07:57:19,278 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:57:19,523 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 07:57:23,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:57:23,454 INFO L93 Difference]: Finished difference Result 122506 states and 146376 transitions. [2019-09-08 07:57:23,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2019-09-08 07:57:23,454 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 185 [2019-09-08 07:57:23,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:57:23,596 INFO L225 Difference]: With dead ends: 122506 [2019-09-08 07:57:23,596 INFO L226 Difference]: Without dead ends: 67346 [2019-09-08 07:57:23,660 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3344 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=1555, Invalid=9365, Unknown=0, NotChecked=0, Total=10920 [2019-09-08 07:57:23,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67346 states. [2019-09-08 07:57:31,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67346 to 62668. [2019-09-08 07:57:31,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62668 states. [2019-09-08 07:57:32,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62668 states to 62668 states and 72453 transitions. [2019-09-08 07:57:32,026 INFO L78 Accepts]: Start accepts. Automaton has 62668 states and 72453 transitions. Word has length 185 [2019-09-08 07:57:32,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:57:32,027 INFO L475 AbstractCegarLoop]: Abstraction has 62668 states and 72453 transitions. [2019-09-08 07:57:32,027 INFO L476 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-09-08 07:57:32,027 INFO L276 IsEmpty]: Start isEmpty. Operand 62668 states and 72453 transitions. [2019-09-08 07:57:32,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-09-08 07:57:32,036 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:57:32,036 INFO L399 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, 3, 3, 3, 3, 3, 3, 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] [2019-09-08 07:57:32,036 INFO L418 AbstractCegarLoop]: === Iteration 29 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:57:32,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:57:32,036 INFO L82 PathProgramCache]: Analyzing trace with hash 2006409662, now seen corresponding path program 1 times [2019-09-08 07:57:32,036 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:57:32,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:57:32,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:57:32,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:57:32,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:57:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:57:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 59 proven. 10 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-09-08 07:57:32,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:57:32,122 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:57:32,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:57:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:57:32,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-08 07:57:32,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:57:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 131 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-09-08 07:57:32,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:57:32,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2019-09-08 07:57:32,397 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-08 07:57:32,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-08 07:57:32,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-09-08 07:57:32,398 INFO L87 Difference]: Start difference. First operand 62668 states and 72453 transitions. Second operand 14 states. [2019-09-08 07:57:38,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:57:38,002 INFO L93 Difference]: Finished difference Result 87025 states and 101089 transitions. [2019-09-08 07:57:38,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-08 07:57:38,002 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 185 [2019-09-08 07:57:38,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:57:38,084 INFO L225 Difference]: With dead ends: 87025 [2019-09-08 07:57:38,084 INFO L226 Difference]: Without dead ends: 37663 [2019-09-08 07:57:38,130 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-09-08 07:57:38,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37663 states. [2019-09-08 07:57:42,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37663 to 32393. [2019-09-08 07:57:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32393 states. [2019-09-08 07:57:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32393 states to 32393 states and 37361 transitions. [2019-09-08 07:57:42,457 INFO L78 Accepts]: Start accepts. Automaton has 32393 states and 37361 transitions. Word has length 185 [2019-09-08 07:57:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:57:42,458 INFO L475 AbstractCegarLoop]: Abstraction has 32393 states and 37361 transitions. [2019-09-08 07:57:42,458 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-08 07:57:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 32393 states and 37361 transitions. [2019-09-08 07:57:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-09-08 07:57:42,464 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:57:42,464 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-08 07:57:42,465 INFO L418 AbstractCegarLoop]: === Iteration 30 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:57:42,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:57:42,465 INFO L82 PathProgramCache]: Analyzing trace with hash -904919032, now seen corresponding path program 1 times [2019-09-08 07:57:42,465 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:57:42,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:57:42,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:57:42,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:57:42,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:57:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:57:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 36 proven. 70 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-09-08 07:57:43,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:57:43,008 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:57:43,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:57:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:57:43,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 61 conjunts are in the unsatisfiable core [2019-09-08 07:57:43,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:57:43,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:57:44,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:57:45,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:57:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 50 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:57:46,013 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:57:46,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 34] total 59 [2019-09-08 07:57:46,014 INFO L454 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-09-08 07:57:46,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-09-08 07:57:46,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=3149, Unknown=0, NotChecked=0, Total=3422 [2019-09-08 07:57:46,015 INFO L87 Difference]: Start difference. First operand 32393 states and 37361 transitions. Second operand 59 states. [2019-09-08 07:57:46,385 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2019-09-08 07:57:49,407 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-09-08 07:57:57,802 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2019-09-08 07:57:58,343 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-09-08 07:58:00,711 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-08 07:58:03,222 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-08 07:58:03,749 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2019-09-08 07:58:04,019 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-08 07:58:04,662 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2019-09-08 07:58:06,434 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-08 07:58:06,818 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-09-08 07:58:07,299 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-08 07:58:10,239 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-08 07:58:11,743 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-08 07:58:12,352 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-08 07:58:13,511 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-08 07:58:15,826 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-08 07:58:25,832 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2019-09-08 07:58:27,290 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-08 07:58:29,579 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 07:58:29,834 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-08 07:58:30,138 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2019-09-08 07:58:33,051 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-08 07:58:37,090 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-08 07:58:37,481 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-08 07:58:38,385 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-08 07:58:39,073 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-08 07:58:41,739 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2019-09-08 07:58:50,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:58:50,656 INFO L93 Difference]: Finished difference Result 65382 states and 75693 transitions. [2019-09-08 07:58:50,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2019-09-08 07:58:50,657 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 186 [2019-09-08 07:58:50,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:58:50,790 INFO L225 Difference]: With dead ends: 65382 [2019-09-08 07:58:50,790 INFO L226 Difference]: Without dead ends: 56023 [2019-09-08 07:58:50,816 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 273 SyntacticMatches, 3 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27276 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=5914, Invalid=69985, Unknown=1, NotChecked=0, Total=75900 [2019-09-08 07:58:50,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56023 states. [2019-09-08 07:58:57,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56023 to 53829. [2019-09-08 07:58:57,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53829 states. [2019-09-08 07:58:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53829 states to 53829 states and 61660 transitions. [2019-09-08 07:58:58,051 INFO L78 Accepts]: Start accepts. Automaton has 53829 states and 61660 transitions. Word has length 186 [2019-09-08 07:58:58,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:58:58,051 INFO L475 AbstractCegarLoop]: Abstraction has 53829 states and 61660 transitions. [2019-09-08 07:58:58,051 INFO L476 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-09-08 07:58:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand 53829 states and 61660 transitions. [2019-09-08 07:58:58,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-09-08 07:58:58,059 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:58:58,059 INFO L399 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, 3, 3, 3, 3, 3, 3, 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] [2019-09-08 07:58:58,060 INFO L418 AbstractCegarLoop]: === Iteration 31 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:58:58,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:58:58,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1925213669, now seen corresponding path program 1 times [2019-09-08 07:58:58,060 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:58:58,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:58:58,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:58:58,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:58:58,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:58:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:58:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 42 proven. 53 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-09-08 07:58:58,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:58:58,451 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:58:58,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:58:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:58:58,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:58:58,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:58:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2019-09-08 07:58:58,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:58:58,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2019-09-08 07:58:58,816 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-08 07:58:58,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-08 07:58:58,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2019-09-08 07:58:58,816 INFO L87 Difference]: Start difference. First operand 53829 states and 61660 transitions. Second operand 28 states. [2019-09-08 07:58:59,768 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-09-08 07:58:59,921 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2019-09-08 07:59:00,165 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-09-08 07:59:00,319 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2019-09-08 07:59:00,474 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2019-09-08 07:59:00,663 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2019-09-08 07:59:00,821 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2019-09-08 07:59:01,082 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2019-09-08 07:59:01,221 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2019-09-08 07:59:01,520 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2019-09-08 07:59:01,684 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2019-09-08 07:59:01,837 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2019-09-08 07:59:02,002 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2019-09-08 07:59:02,155 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2019-09-08 07:59:02,339 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2019-09-08 07:59:02,507 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2019-09-08 07:59:03,038 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-09-08 07:59:03,321 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2019-09-08 07:59:04,613 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2019-09-08 07:59:04,754 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2019-09-08 07:59:04,929 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-08 07:59:05,220 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2019-09-08 07:59:05,386 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2019-09-08 07:59:06,011 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2019-09-08 07:59:06,260 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2019-09-08 07:59:06,434 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-09-08 07:59:06,584 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2019-09-08 07:59:06,746 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-09-08 07:59:06,917 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2019-09-08 07:59:07,065 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2019-09-08 07:59:07,231 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2019-09-08 07:59:07,393 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2019-09-08 07:59:07,563 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 07:59:07,750 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-08 07:59:08,001 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-09-08 07:59:08,372 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2019-09-08 07:59:09,515 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-08 07:59:09,771 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-08 07:59:09,930 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-08 07:59:10,381 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-08 07:59:10,551 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-08 07:59:10,696 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-08 07:59:11,742 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2019-09-08 07:59:11,902 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-09-08 07:59:12,051 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-09-08 07:59:12,216 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-08 07:59:12,372 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2019-09-08 07:59:12,536 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2019-09-08 07:59:12,761 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2019-09-08 07:59:16,287 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2019-09-08 07:59:16,877 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-08 07:59:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:59:20,161 INFO L93 Difference]: Finished difference Result 93694 states and 107146 transitions. [2019-09-08 07:59:20,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2019-09-08 07:59:20,162 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 186 [2019-09-08 07:59:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:59:20,270 INFO L225 Difference]: With dead ends: 93694 [2019-09-08 07:59:20,270 INFO L226 Difference]: Without dead ends: 49016 [2019-09-08 07:59:20,312 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4462 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=2424, Invalid=11618, Unknown=0, NotChecked=0, Total=14042 [2019-09-08 07:59:20,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49016 states.