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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:30:25,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:30:25,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:30:25,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:30:25,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:30:25,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:30:25,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:30:25,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:30:25,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:30:25,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:30:25,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:30:25,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:30:25,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:30:25,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:30:25,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:30:25,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:30:25,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:30:25,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:30:25,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:30:25,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:30:25,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:30:25,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:30:25,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:30:25,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:30:25,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:30:25,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:30:25,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:30:25,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:30:25,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:30:25,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:30:25,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:30:25,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:30:25,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:30:25,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:30:25,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:30:25,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:30:25,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:30:25,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:30:25,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:30:25,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:30:25,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:30:25,374 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 [2019-10-07 14:30:25,401 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:30:25,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:30:25,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:30:25,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:30:25,405 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:30:25,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:30:25,405 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:30:25,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:30:25,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:30:25,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:30:25,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:30:25,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:30:25,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:30:25,407 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:30:25,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:30:25,408 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:30:25,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:30:25,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:30:25,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:30:25,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:30:25,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:30:25,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:30:25,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:30:25,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:30:25,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:30:25,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:30:25,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:30:25,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:30:25,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 14:30:25,747 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:30:25,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:30:25,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:30:25,771 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:30:25,772 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:30:25,773 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product30.cil.c [2019-10-07 14:30:25,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22093bdbf/71430ed8dade45ecaecbc418d9d9d48a/FLAG74e572e2f [2019-10-07 14:30:26,556 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:30:26,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product30.cil.c [2019-10-07 14:30:26,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22093bdbf/71430ed8dade45ecaecbc418d9d9d48a/FLAG74e572e2f [2019-10-07 14:30:26,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22093bdbf/71430ed8dade45ecaecbc418d9d9d48a [2019-10-07 14:30:26,683 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:30:26,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:30:26,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:30:26,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:30:26,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:30:26,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:30:26" (1/1) ... [2019-10-07 14:30:26,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54803c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:26, skipping insertion in model container [2019-10-07 14:30:26,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:30:26" (1/1) ... [2019-10-07 14:30:26,706 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:30:26,796 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:30:27,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:30:27,482 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:30:27,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:30:27,691 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:30:27,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:27 WrapperNode [2019-10-07 14:30:27,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:30:27,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:30:27,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:30:27,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:30:27,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:27" (1/1) ... [2019-10-07 14:30:27,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:27" (1/1) ... [2019-10-07 14:30:27,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:27" (1/1) ... [2019-10-07 14:30:27,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:27" (1/1) ... [2019-10-07 14:30:27,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:27" (1/1) ... [2019-10-07 14:30:27,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:27" (1/1) ... [2019-10-07 14:30:27,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:27" (1/1) ... [2019-10-07 14:30:27,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:30:27,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:30:27,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:30:27,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:30:27,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:27" (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 [2019-10-07 14:30:27,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:30:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:30:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:30:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:30:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:30:27,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:30:27,982 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:30:27,982 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:30:27,982 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:30:27,983 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:30:27,983 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:30:27,983 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:30:27,983 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:30:27,983 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:30:27,984 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:30:27,984 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:30:27,984 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:30:27,984 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:30:27,985 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:30:27,985 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:30:27,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:30:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:30:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:30:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:30:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:30:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:30:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:30:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:30:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:30:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:30:27,988 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:30:27,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:30:27,988 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:30:27,988 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:30:27,988 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:30:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-07 14:30:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:30:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:30:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:30:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:30:27,990 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:30:27,990 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:30:27,990 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:30:27,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:30:27,990 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:30:27,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:30:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:30:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:30:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:30:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:30:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:30:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:30:27,992 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:30:27,992 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:30:27,992 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-07 14:30:27,992 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:30:27,992 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-07 14:30:27,993 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:30:27,993 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:30:27,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:30:27,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:30:27,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:30:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:30:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:30:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:30:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:30:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:30:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:30:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:30:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:30:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:30:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:30:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:30:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:30:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:30:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:30:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:30:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:30:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:30:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:30:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:30:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:30:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:30:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:30:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:30:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:30:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:30:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:30:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:30:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:30:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:30:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:30:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:30:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:30:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:30:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:30:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:30:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:30:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:30:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:30:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:30:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:30:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:30:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:30:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:30:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:30:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:30:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:30:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:30:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:30:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:30:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:30:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:30:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:30:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:30:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:30:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:30:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:30:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:30:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:30:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:30:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:30:28,005 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:30:28,005 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:30:28,005 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:30:28,005 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:30:28,005 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:30:28,005 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:30:28,006 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:30:28,006 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:30:28,006 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:30:28,006 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:30:28,006 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-07 14:30:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:30:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:30:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:30:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:30:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:30:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:30:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:30:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:30:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:30:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:30:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:30:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-07 14:30:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-07 14:30:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:30:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:30:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:30:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:30:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:30:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:30:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:30:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:30:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:30:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:30:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:30:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:30:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:30:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:30:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:30:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:30:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:30:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:30:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:30:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:30:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:30:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:30:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:30:32,760 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:30:32,761 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:30:32,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:30:32 BoogieIcfgContainer [2019-10-07 14:30:32,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:30:32,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:30:32,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:30:32,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:30:32,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:30:26" (1/3) ... [2019-10-07 14:30:32,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6deeb3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:30:32, skipping insertion in model container [2019-10-07 14:30:32,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:27" (2/3) ... [2019-10-07 14:30:32,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6deeb3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:30:32, skipping insertion in model container [2019-10-07 14:30:32,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:30:32" (3/3) ... [2019-10-07 14:30:32,771 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c [2019-10-07 14:30:32,780 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:30:32,789 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:30:32,800 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:30:32,833 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:30:32,833 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:30:32,833 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:30:32,833 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:30:32,833 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:30:32,834 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:30:32,834 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:30:32,834 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:30:32,868 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states. [2019-10-07 14:30:32,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-07 14:30:32,880 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:32,881 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:30:32,884 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:32,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:32,890 INFO L82 PathProgramCache]: Analyzing trace with hash -603185997, now seen corresponding path program 1 times [2019-10-07 14:30:32,899 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:32,899 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:32,900 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:32,900 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:32,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 14:30:33,588 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:33,588 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:33,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:34,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 2921 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:30:34,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:30:34,287 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:30:34,399 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:30:34,399 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:30:34,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:30:34,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:30:34,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:30:34,421 INFO L87 Difference]: Start difference. First operand 615 states. Second operand 3 states. [2019-10-07 14:30:34,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:34,620 INFO L93 Difference]: Finished difference Result 1349 states and 2043 transitions. [2019-10-07 14:30:34,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:30:34,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2019-10-07 14:30:34,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:34,657 INFO L225 Difference]: With dead ends: 1349 [2019-10-07 14:30:34,657 INFO L226 Difference]: Without dead ends: 872 [2019-10-07 14:30:34,669 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:30:34,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2019-10-07 14:30:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 859. [2019-10-07 14:30:34,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2019-10-07 14:30:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1284 transitions. [2019-10-07 14:30:34,829 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1284 transitions. Word has length 80 [2019-10-07 14:30:34,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:34,830 INFO L462 AbstractCegarLoop]: Abstraction has 859 states and 1284 transitions. [2019-10-07 14:30:34,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:30:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1284 transitions. [2019-10-07 14:30:34,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-07 14:30:34,835 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:34,835 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:30:35,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:35,044 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:35,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:35,045 INFO L82 PathProgramCache]: Analyzing trace with hash 877056551, now seen corresponding path program 1 times [2019-10-07 14:30:35,045 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:35,045 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:35,046 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:35,046 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:35,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 14:30:35,478 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:35,479 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:30:35,479 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:30:35,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:30:35,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:30:35,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:30:35,480 INFO L87 Difference]: Start difference. First operand 859 states and 1284 transitions. Second operand 10 states. [2019-10-07 14:30:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:36,461 INFO L93 Difference]: Finished difference Result 1697 states and 2561 transitions. [2019-10-07 14:30:36,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:30:36,462 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2019-10-07 14:30:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:36,488 INFO L225 Difference]: With dead ends: 1697 [2019-10-07 14:30:36,488 INFO L226 Difference]: Without dead ends: 1694 [2019-10-07 14:30:36,493 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:30:36,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2019-10-07 14:30:36,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1658. [2019-10-07 14:30:36,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2019-10-07 14:30:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2517 transitions. [2019-10-07 14:30:36,664 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2517 transitions. Word has length 81 [2019-10-07 14:30:36,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:36,667 INFO L462 AbstractCegarLoop]: Abstraction has 1658 states and 2517 transitions. [2019-10-07 14:30:36,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:30:36,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2517 transitions. [2019-10-07 14:30:36,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-07 14:30:36,672 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:36,673 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:30:36,673 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:36,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:36,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1461243360, now seen corresponding path program 1 times [2019-10-07 14:30:36,679 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:36,679 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:36,679 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:36,679 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 14:30:37,015 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:37,016 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:37,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:37,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 2922 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:30:37,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:30:37,532 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:30:37,628 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:30:37,628 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:30:37,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:30:37,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:30:37,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:30:37,630 INFO L87 Difference]: Start difference. First operand 1658 states and 2517 transitions. Second operand 3 states. [2019-10-07 14:30:37,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:37,798 INFO L93 Difference]: Finished difference Result 4053 states and 6223 transitions. [2019-10-07 14:30:37,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:30:37,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-07 14:30:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:37,818 INFO L225 Difference]: With dead ends: 4053 [2019-10-07 14:30:37,818 INFO L226 Difference]: Without dead ends: 2426 [2019-10-07 14:30:37,828 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:30:37,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2019-10-07 14:30:37,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2366. [2019-10-07 14:30:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2366 states. [2019-10-07 14:30:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 3603 transitions. [2019-10-07 14:30:38,028 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 3603 transitions. Word has length 81 [2019-10-07 14:30:38,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:38,029 INFO L462 AbstractCegarLoop]: Abstraction has 2366 states and 3603 transitions. [2019-10-07 14:30:38,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:30:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 3603 transitions. [2019-10-07 14:30:38,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-07 14:30:38,032 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:38,033 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:30:38,242 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:38,243 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:38,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:38,244 INFO L82 PathProgramCache]: Analyzing trace with hash -612635584, now seen corresponding path program 1 times [2019-10-07 14:30:38,245 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:38,245 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:38,245 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:38,246 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 14:30:38,709 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:38,710 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:39,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 14:30:39,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:30:39,374 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:39,529 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:30:39,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:30:39,688 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:30:39,688 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-07 14:30:39,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-07 14:30:39,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-07 14:30:39,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:30:39,690 INFO L87 Difference]: Start difference. First operand 2366 states and 3603 transitions. Second operand 11 states. [2019-10-07 14:30:44,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:44,967 INFO L93 Difference]: Finished difference Result 6568 states and 10154 transitions. [2019-10-07 14:30:44,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-07 14:30:44,968 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2019-10-07 14:30:44,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:45,001 INFO L225 Difference]: With dead ends: 6568 [2019-10-07 14:30:45,001 INFO L226 Difference]: Without dead ends: 4233 [2019-10-07 14:30:45,018 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 156 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:30:45,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2019-10-07 14:30:45,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 4213. [2019-10-07 14:30:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4213 states. [2019-10-07 14:30:45,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4213 states to 4213 states and 6257 transitions. [2019-10-07 14:30:45,276 INFO L78 Accepts]: Start accepts. Automaton has 4213 states and 6257 transitions. Word has length 82 [2019-10-07 14:30:45,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:45,277 INFO L462 AbstractCegarLoop]: Abstraction has 4213 states and 6257 transitions. [2019-10-07 14:30:45,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-07 14:30:45,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states and 6257 transitions. [2019-10-07 14:30:45,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-07 14:30:45,290 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:45,291 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:30:45,498 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:45,499 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:45,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:45,499 INFO L82 PathProgramCache]: Analyzing trace with hash 639383823, now seen corresponding path program 1 times [2019-10-07 14:30:45,499 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:45,500 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:45,500 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:45,500 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:45,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-07 14:30:45,811 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:45,811 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:45,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:46,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 3863 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:30:46,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 14:30:46,757 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-07 14:30:47,090 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:30:47,091 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13, 4] total 15 [2019-10-07 14:30:47,092 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:30:47,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:30:47,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:30:47,094 INFO L87 Difference]: Start difference. First operand 4213 states and 6257 transitions. Second operand 3 states. [2019-10-07 14:30:47,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:47,431 INFO L93 Difference]: Finished difference Result 9880 states and 14831 transitions. [2019-10-07 14:30:47,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:30:47,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2019-10-07 14:30:47,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:47,476 INFO L225 Difference]: With dead ends: 9880 [2019-10-07 14:30:47,477 INFO L226 Difference]: Without dead ends: 5698 [2019-10-07 14:30:47,501 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:30:47,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5698 states. [2019-10-07 14:30:47,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5698 to 5607. [2019-10-07 14:30:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5607 states. [2019-10-07 14:30:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5607 states to 5607 states and 8349 transitions. [2019-10-07 14:30:47,795 INFO L78 Accepts]: Start accepts. Automaton has 5607 states and 8349 transitions. Word has length 195 [2019-10-07 14:30:47,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:47,799 INFO L462 AbstractCegarLoop]: Abstraction has 5607 states and 8349 transitions. [2019-10-07 14:30:47,799 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:30:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand 5607 states and 8349 transitions. [2019-10-07 14:30:47,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-07 14:30:47,808 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:47,809 INFO L385 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:30:48,028 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:48,030 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:48,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:48,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1000057968, now seen corresponding path program 1 times [2019-10-07 14:30:48,031 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:48,031 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:48,031 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:48,031 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 14:30:48,318 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:48,318 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:49,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 3879 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:30:49,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-07 14:30:49,328 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:49,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:30:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 14:30:49,995 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:30:49,996 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 25 [2019-10-07 14:30:49,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:30:49,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:30:49,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2019-10-07 14:30:49,999 INFO L87 Difference]: Start difference. First operand 5607 states and 8349 transitions. Second operand 9 states. [2019-10-07 14:30:57,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:57,569 INFO L93 Difference]: Finished difference Result 14038 states and 21023 transitions. [2019-10-07 14:30:57,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 14:30:57,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 202 [2019-10-07 14:30:57,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:57,640 INFO L225 Difference]: With dead ends: 14038 [2019-10-07 14:30:57,640 INFO L226 Difference]: Without dead ends: 8462 [2019-10-07 14:30:57,674 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 392 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1019, Unknown=0, NotChecked=0, Total=1190 [2019-10-07 14:30:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8462 states. [2019-10-07 14:30:58,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8462 to 8236. [2019-10-07 14:30:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8236 states. [2019-10-07 14:30:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8236 states to 8236 states and 12332 transitions. [2019-10-07 14:30:58,081 INFO L78 Accepts]: Start accepts. Automaton has 8236 states and 12332 transitions. Word has length 202 [2019-10-07 14:30:58,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:58,082 INFO L462 AbstractCegarLoop]: Abstraction has 8236 states and 12332 transitions. [2019-10-07 14:30:58,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:30:58,082 INFO L276 IsEmpty]: Start isEmpty. Operand 8236 states and 12332 transitions. [2019-10-07 14:30:58,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-07 14:30:58,086 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:58,087 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:30:58,295 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:58,295 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:58,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:58,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1916807320, now seen corresponding path program 1 times [2019-10-07 14:30:58,296 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:58,296 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:58,296 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:58,296 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-07 14:30:58,527 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:58,527 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:58,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:59,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 3597 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-07 14:30:59,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:59,418 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:30:59,418 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:59,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:30:59,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:30:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 14:30:59,682 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:30:59,683 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [9] total 17 [2019-10-07 14:30:59,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:30:59,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:30:59,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2019-10-07 14:30:59,684 INFO L87 Difference]: Start difference. First operand 8236 states and 12332 transitions. Second operand 10 states. [2019-10-07 14:31:08,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:08,954 INFO L93 Difference]: Finished difference Result 44820 states and 69495 transitions. [2019-10-07 14:31:08,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-07 14:31:08,955 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2019-10-07 14:31:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:09,316 INFO L225 Difference]: With dead ends: 44820 [2019-10-07 14:31:09,317 INFO L226 Difference]: Without dead ends: 36617 [2019-10-07 14:31:09,424 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:31:09,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36617 states. [2019-10-07 14:31:12,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36617 to 33349. [2019-10-07 14:31:12,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33349 states. [2019-10-07 14:31:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33349 states to 33349 states and 51190 transitions. [2019-10-07 14:31:12,971 INFO L78 Accepts]: Start accepts. Automaton has 33349 states and 51190 transitions. Word has length 166 [2019-10-07 14:31:12,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:12,973 INFO L462 AbstractCegarLoop]: Abstraction has 33349 states and 51190 transitions. [2019-10-07 14:31:12,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:31:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 33349 states and 51190 transitions. [2019-10-07 14:31:12,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-07 14:31:12,977 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:12,978 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:13,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:13,187 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:13,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:13,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1539803295, now seen corresponding path program 1 times [2019-10-07 14:31:13,188 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:13,188 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:13,188 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:13,188 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:13,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:31:13,374 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:13,374 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:31:13,374 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:31:13,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:31:13,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:31:13,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:31:13,376 INFO L87 Difference]: Start difference. First operand 33349 states and 51190 transitions. Second operand 10 states. [2019-10-07 14:31:16,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:16,072 INFO L93 Difference]: Finished difference Result 56466 states and 86940 transitions. [2019-10-07 14:31:16,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:31:16,073 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 127 [2019-10-07 14:31:16,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:16,218 INFO L225 Difference]: With dead ends: 56466 [2019-10-07 14:31:16,219 INFO L226 Difference]: Without dead ends: 22927 [2019-10-07 14:31:16,338 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:31:16,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22927 states. [2019-10-07 14:31:18,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22927 to 21469. [2019-10-07 14:31:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21469 states. [2019-10-07 14:31:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21469 states to 21469 states and 32483 transitions. [2019-10-07 14:31:18,929 INFO L78 Accepts]: Start accepts. Automaton has 21469 states and 32483 transitions. Word has length 127 [2019-10-07 14:31:18,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:18,930 INFO L462 AbstractCegarLoop]: Abstraction has 21469 states and 32483 transitions. [2019-10-07 14:31:18,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:31:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand 21469 states and 32483 transitions. [2019-10-07 14:31:18,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-07 14:31:18,933 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:18,934 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:18,934 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:18,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:18,934 INFO L82 PathProgramCache]: Analyzing trace with hash -738326244, now seen corresponding path program 1 times [2019-10-07 14:31:18,934 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:18,935 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:18,935 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:18,935 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:18,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:31:19,092 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:19,093 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:19,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:19,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 3290 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-07 14:31:20,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:31:20,116 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:20,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:20,419 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 14:31:20,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:20,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 14:31:20,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:31:20,600 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:31:20,601 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 19 [2019-10-07 14:31:20,603 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:31:20,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:31:20,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2019-10-07 14:31:20,604 INFO L87 Difference]: Start difference. First operand 21469 states and 32483 transitions. Second operand 9 states. [2019-10-07 14:31:24,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:24,803 INFO L93 Difference]: Finished difference Result 43015 states and 66672 transitions. [2019-10-07 14:31:24,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 14:31:24,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2019-10-07 14:31:24,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:24,971 INFO L225 Difference]: With dead ends: 43015 [2019-10-07 14:31:24,972 INFO L226 Difference]: Without dead ends: 23511 [2019-10-07 14:31:25,084 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 240 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2019-10-07 14:31:25,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23511 states. [2019-10-07 14:31:26,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23511 to 22131. [2019-10-07 14:31:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22131 states. [2019-10-07 14:31:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22131 states to 22131 states and 33905 transitions. [2019-10-07 14:31:26,406 INFO L78 Accepts]: Start accepts. Automaton has 22131 states and 33905 transitions. Word has length 127 [2019-10-07 14:31:26,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:26,407 INFO L462 AbstractCegarLoop]: Abstraction has 22131 states and 33905 transitions. [2019-10-07 14:31:26,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:31:26,407 INFO L276 IsEmpty]: Start isEmpty. Operand 22131 states and 33905 transitions. [2019-10-07 14:31:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-07 14:31:26,413 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:26,413 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:26,621 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:26,622 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:26,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:26,622 INFO L82 PathProgramCache]: Analyzing trace with hash -153483237, now seen corresponding path program 1 times [2019-10-07 14:31:26,623 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:26,623 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:26,623 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:26,623 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:31:26,862 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:26,862 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:27,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 3279 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:31:27,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:31:27,617 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:27,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:31:27,870 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:31:27,870 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 13 [2019-10-07 14:31:27,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:31:27,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:31:27,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:31:27,872 INFO L87 Difference]: Start difference. First operand 22131 states and 33905 transitions. Second operand 8 states. [2019-10-07 14:31:29,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:29,073 INFO L93 Difference]: Finished difference Result 45819 states and 71514 transitions. [2019-10-07 14:31:29,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:31:29,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2019-10-07 14:31:29,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:29,230 INFO L225 Difference]: With dead ends: 45819 [2019-10-07 14:31:29,230 INFO L226 Difference]: Without dead ends: 25365 [2019-10-07 14:31:29,314 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 249 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:31:29,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25365 states. [2019-10-07 14:31:30,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25365 to 25365. [2019-10-07 14:31:30,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25365 states. [2019-10-07 14:31:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25365 states to 25365 states and 38863 transitions. [2019-10-07 14:31:30,711 INFO L78 Accepts]: Start accepts. Automaton has 25365 states and 38863 transitions. Word has length 128 [2019-10-07 14:31:30,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:30,712 INFO L462 AbstractCegarLoop]: Abstraction has 25365 states and 38863 transitions. [2019-10-07 14:31:30,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:31:30,712 INFO L276 IsEmpty]: Start isEmpty. Operand 25365 states and 38863 transitions. [2019-10-07 14:31:30,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-07 14:31:30,718 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:30,719 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:30,926 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:30,926 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:30,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:30,927 INFO L82 PathProgramCache]: Analyzing trace with hash -15238175, now seen corresponding path program 1 times [2019-10-07 14:31:30,928 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:30,928 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:30,928 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:30,929 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:31:31,074 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:31,074 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:31,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:31,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 3279 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-07 14:31:31,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:31,888 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-10-07 14:31:31,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:31:31,928 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:32,355 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:31:32,765 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:31:32,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:31:32,850 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:31:32,850 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 13 [2019-10-07 14:31:32,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:31:32,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:31:32,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:31:32,852 INFO L87 Difference]: Start difference. First operand 25365 states and 38863 transitions. Second operand 6 states. [2019-10-07 14:31:36,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:36,645 INFO L93 Difference]: Finished difference Result 65295 states and 102714 transitions. [2019-10-07 14:31:36,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:31:36,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2019-10-07 14:31:36,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:36,876 INFO L225 Difference]: With dead ends: 65295 [2019-10-07 14:31:36,876 INFO L226 Difference]: Without dead ends: 39961 [2019-10-07 14:31:36,981 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:31:37,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39961 states. [2019-10-07 14:31:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39961 to 39360. [2019-10-07 14:31:38,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39360 states. [2019-10-07 14:31:38,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39360 states to 39360 states and 60998 transitions. [2019-10-07 14:31:38,992 INFO L78 Accepts]: Start accepts. Automaton has 39360 states and 60998 transitions. Word has length 129 [2019-10-07 14:31:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:38,992 INFO L462 AbstractCegarLoop]: Abstraction has 39360 states and 60998 transitions. [2019-10-07 14:31:38,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:31:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 39360 states and 60998 transitions. [2019-10-07 14:31:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-07 14:31:38,997 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:38,997 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:39,205 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:39,206 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:39,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:39,207 INFO L82 PathProgramCache]: Analyzing trace with hash -20834130, now seen corresponding path program 1 times [2019-10-07 14:31:39,207 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:39,208 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:39,208 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:39,208 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:31:39,427 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:39,427 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:40,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 3306 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-07 14:31:40,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 14:31:40,303 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:40,702 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:31:41,129 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:31:41,155 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:41,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:41,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:41,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:41,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:31:41,208 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:31:41,208 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 7] total 16 [2019-10-07 14:31:41,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:31:41,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:31:41,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:31:41,210 INFO L87 Difference]: Start difference. First operand 39360 states and 60998 transitions. Second operand 6 states. [2019-10-07 14:31:46,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:46,699 INFO L93 Difference]: Finished difference Result 106364 states and 171441 transitions. [2019-10-07 14:31:46,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:31:46,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2019-10-07 14:31:46,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:46,953 INFO L225 Difference]: With dead ends: 106364 [2019-10-07 14:31:46,954 INFO L226 Difference]: Without dead ends: 67035 [2019-10-07 14:31:47,071 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:31:47,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67035 states. [2019-10-07 14:31:49,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67035 to 65992. [2019-10-07 14:31:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65992 states. [2019-10-07 14:31:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65992 states to 65992 states and 104451 transitions. [2019-10-07 14:31:49,816 INFO L78 Accepts]: Start accepts. Automaton has 65992 states and 104451 transitions. Word has length 137 [2019-10-07 14:31:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:49,816 INFO L462 AbstractCegarLoop]: Abstraction has 65992 states and 104451 transitions. [2019-10-07 14:31:49,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:31:49,817 INFO L276 IsEmpty]: Start isEmpty. Operand 65992 states and 104451 transitions. [2019-10-07 14:31:49,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-07 14:31:49,823 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:49,823 INFO L385 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:50,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:50,032 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:50,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1371898018, now seen corresponding path program 1 times [2019-10-07 14:31:50,033 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:50,033 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:50,033 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:50,034 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:50,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 14:31:50,287 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:50,287 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:31:50,287 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-07 14:31:50,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-07 14:31:50,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-07 14:31:50,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:31:50,289 INFO L87 Difference]: Start difference. First operand 65992 states and 104451 transitions. Second operand 16 states. [2019-10-07 14:32:15,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:32:15,724 INFO L93 Difference]: Finished difference Result 271653 states and 487235 transitions. [2019-10-07 14:32:15,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-10-07 14:32:15,725 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2019-10-07 14:32:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:32:16,980 INFO L225 Difference]: With dead ends: 271653 [2019-10-07 14:32:16,980 INFO L226 Difference]: Without dead ends: 212027 [2019-10-07 14:32:17,351 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=480, Invalid=2490, Unknown=0, NotChecked=0, Total=2970 [2019-10-07 14:32:18,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212027 states. [2019-10-07 14:32:31,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212027 to 204890. [2019-10-07 14:32:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204890 states. [2019-10-07 14:32:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204890 states to 204890 states and 351638 transitions. [2019-10-07 14:32:32,456 INFO L78 Accepts]: Start accepts. Automaton has 204890 states and 351638 transitions. Word has length 142 [2019-10-07 14:32:32,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:32:32,457 INFO L462 AbstractCegarLoop]: Abstraction has 204890 states and 351638 transitions. [2019-10-07 14:32:32,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-07 14:32:32,457 INFO L276 IsEmpty]: Start isEmpty. Operand 204890 states and 351638 transitions. [2019-10-07 14:32:32,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-07 14:32:32,466 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:32:32,466 INFO L385 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:32:32,466 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:32:32,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:32:32,467 INFO L82 PathProgramCache]: Analyzing trace with hash 917248060, now seen corresponding path program 1 times [2019-10-07 14:32:32,467 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:32:32,467 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:32,467 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:32,468 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:32,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:32:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:32:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 14:32:37,761 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:37,761 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:32:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:32:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:32:38,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 3453 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 14:32:38,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:32:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 14:32:38,536 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:32:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 14:32:38,914 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:32:38,914 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 15 [2019-10-07 14:32:38,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:32:38,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:32:38,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:32:38,915 INFO L87 Difference]: Start difference. First operand 204890 states and 351638 transitions. Second operand 7 states. [2019-10-07 14:32:49,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:32:49,762 INFO L93 Difference]: Finished difference Result 410779 states and 752842 transitions. [2019-10-07 14:32:49,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:32:49,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2019-10-07 14:32:49,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:32:50,988 INFO L225 Difference]: With dead ends: 410779 [2019-10-07 14:32:50,989 INFO L226 Difference]: Without dead ends: 210035 [2019-10-07 14:32:51,972 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 345 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:32:53,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210035 states. [2019-10-07 14:33:10,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210035 to 207893. [2019-10-07 14:33:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207893 states. [2019-10-07 14:33:13,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207893 states to 207893 states and 367867 transitions. [2019-10-07 14:33:13,388 INFO L78 Accepts]: Start accepts. Automaton has 207893 states and 367867 transitions. Word has length 176 [2019-10-07 14:33:13,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:33:13,389 INFO L462 AbstractCegarLoop]: Abstraction has 207893 states and 367867 transitions. [2019-10-07 14:33:13,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:33:13,389 INFO L276 IsEmpty]: Start isEmpty. Operand 207893 states and 367867 transitions. [2019-10-07 14:33:13,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-07 14:33:13,398 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:33:13,399 INFO L385 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:33:13,608 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:33:13,608 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:33:13,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:33:13,608 INFO L82 PathProgramCache]: Analyzing trace with hash -377259020, now seen corresponding path program 1 times [2019-10-07 14:33:13,609 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:33:13,609 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:33:13,609 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:33:13,609 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:33:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:33:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:33:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-07 14:33:13,826 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:33:13,826 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:33:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:33:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:33:14,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 3454 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 14:33:14,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:33:14,614 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 14:33:14,614 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:33:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-07 14:33:14,986 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:33:14,986 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 15 [2019-10-07 14:33:14,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:33:14,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:33:14,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:33:14,987 INFO L87 Difference]: Start difference. First operand 207893 states and 367867 transitions. Second operand 7 states. [2019-10-07 14:33:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:33:31,669 INFO L93 Difference]: Finished difference Result 415735 states and 777815 transitions. [2019-10-07 14:33:31,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:33:31,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2019-10-07 14:33:31,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:33:32,902 INFO L225 Difference]: With dead ends: 415735 [2019-10-07 14:33:32,902 INFO L226 Difference]: Without dead ends: 211988 [2019-10-07 14:33:41,050 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 347 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:33:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211988 states. [2019-10-07 14:33:52,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211988 to 208256. [2019-10-07 14:33:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208256 states. [2019-10-07 14:33:53,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208256 states to 208256 states and 367708 transitions. [2019-10-07 14:33:53,709 INFO L78 Accepts]: Start accepts. Automaton has 208256 states and 367708 transitions. Word has length 177 [2019-10-07 14:33:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:33:53,709 INFO L462 AbstractCegarLoop]: Abstraction has 208256 states and 367708 transitions. [2019-10-07 14:33:53,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:33:53,710 INFO L276 IsEmpty]: Start isEmpty. Operand 208256 states and 367708 transitions. [2019-10-07 14:33:53,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-07 14:33:53,718 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:33:53,718 INFO L385 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:33:53,926 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:33:53,926 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:33:53,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:33:53,927 INFO L82 PathProgramCache]: Analyzing trace with hash 225718390, now seen corresponding path program 1 times [2019-10-07 14:33:53,927 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:33:53,928 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:33:53,928 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:33:53,928 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:33:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:33:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:33:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-07 14:33:54,125 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:33:54,125 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:33:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:33:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:33:56,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 3453 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 14:33:56,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:33:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 14:33:56,378 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:33:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-07 14:33:56,710 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:33:56,710 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 7] total 9 [2019-10-07 14:33:56,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:33:56,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:33:56,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:33:56,711 INFO L87 Difference]: Start difference. First operand 208256 states and 367708 transitions. Second operand 7 states. [2019-10-07 14:34:14,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:34:14,266 INFO L93 Difference]: Finished difference Result 416461 states and 777497 transitions. [2019-10-07 14:34:14,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:34:14,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2019-10-07 14:34:14,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:34:15,518 INFO L225 Difference]: With dead ends: 416461 [2019-10-07 14:34:15,518 INFO L226 Difference]: Without dead ends: 212351 [2019-10-07 14:34:23,302 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 345 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:34:23,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212351 states. [2019-10-07 14:34:34,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212351 to 209669. [2019-10-07 14:34:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209669 states. [2019-10-07 14:34:35,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209669 states to 209669 states and 371830 transitions. [2019-10-07 14:34:35,755 INFO L78 Accepts]: Start accepts. Automaton has 209669 states and 371830 transitions. Word has length 177 [2019-10-07 14:34:35,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:34:35,755 INFO L462 AbstractCegarLoop]: Abstraction has 209669 states and 371830 transitions. [2019-10-07 14:34:35,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:34:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 209669 states and 371830 transitions. [2019-10-07 14:34:35,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-07 14:34:35,763 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:34:35,763 INFO L385 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:34:35,964 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:34:35,964 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:34:35,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:34:35,965 INFO L82 PathProgramCache]: Analyzing trace with hash -867335604, now seen corresponding path program 1 times [2019-10-07 14:34:35,966 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:34:35,966 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:34:35,967 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:34:35,967 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:34:35,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:34:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:34:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:34:36,201 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:34:36,201 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:34:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:34:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:34:38,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 3458 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:34:38,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:34:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 14:34:38,193 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:34:38,377 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:34:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:34:38,502 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:34:38,502 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 6] total 16 [2019-10-07 14:34:38,503 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:34:38,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:34:38,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:34:38,503 INFO L87 Difference]: Start difference. First operand 209669 states and 371830 transitions. Second operand 6 states. [2019-10-07 14:34:59,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:34:59,604 INFO L93 Difference]: Finished difference Result 441813 states and 832688 transitions. [2019-10-07 14:34:59,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:34:59,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2019-10-07 14:34:59,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:35:01,314 INFO L225 Difference]: With dead ends: 441813 [2019-10-07 14:35:01,314 INFO L226 Difference]: Without dead ends: 199156 [2019-10-07 14:35:02,422 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 375 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2019-10-07 14:35:10,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199156 states. [2019-10-07 14:35:20,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199156 to 198817. [2019-10-07 14:35:20,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198817 states. [2019-10-07 14:35:21,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198817 states to 198817 states and 344252 transitions. [2019-10-07 14:35:21,797 INFO L78 Accepts]: Start accepts. Automaton has 198817 states and 344252 transitions. Word has length 191 [2019-10-07 14:35:21,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:35:21,797 INFO L462 AbstractCegarLoop]: Abstraction has 198817 states and 344252 transitions. [2019-10-07 14:35:21,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:35:21,797 INFO L276 IsEmpty]: Start isEmpty. Operand 198817 states and 344252 transitions. [2019-10-07 14:35:21,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-07 14:35:21,804 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:35:21,804 INFO L385 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:35:22,012 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:35:22,013 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:35:22,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:35:22,013 INFO L82 PathProgramCache]: Analyzing trace with hash -477573092, now seen corresponding path program 1 times [2019-10-07 14:35:22,013 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:35:22,014 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:35:22,014 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:35:22,014 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:35:22,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:35:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:35:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 14:35:22,235 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:35:22,236 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:35:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:35:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:35:24,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 3462 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-07 14:35:24,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:35:24,284 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2019-10-07 14:35:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 14:35:24,338 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:35:24,785 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:35:25,231 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:35:25,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:35:25,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:35:25,265 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:35:25,265 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:35:25,266 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:35:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-07 14:35:25,332 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:35:25,332 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 7] total 20 [2019-10-07 14:35:25,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:35:25,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:35:25,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:35:25,333 INFO L87 Difference]: Start difference. First operand 198817 states and 344252 transitions. Second operand 6 states. [2019-10-07 14:35:53,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:35:53,000 INFO L93 Difference]: Finished difference Result 558463 states and 1058040 transitions. [2019-10-07 14:35:53,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:35:53,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2019-10-07 14:35:53,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:35:56,070 INFO L225 Difference]: With dead ends: 558463 [2019-10-07 14:35:56,070 INFO L226 Difference]: Without dead ends: 359566 [2019-10-07 14:35:57,863 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 384 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:35:58,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359566 states. [2019-10-07 14:36:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359566 to 355017. [2019-10-07 14:36:30,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355017 states. [2019-10-07 14:36:34,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355017 states to 355017 states and 657349 transitions. [2019-10-07 14:36:34,179 INFO L78 Accepts]: Start accepts. Automaton has 355017 states and 657349 transitions. Word has length 195 [2019-10-07 14:36:34,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:36:34,179 INFO L462 AbstractCegarLoop]: Abstraction has 355017 states and 657349 transitions. [2019-10-07 14:36:34,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:36:34,179 INFO L276 IsEmpty]: Start isEmpty. Operand 355017 states and 657349 transitions. [2019-10-07 14:36:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-07 14:36:34,186 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:36:34,186 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:36:34,388 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:36:34,388 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:36:34,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:36:34,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1229814238, now seen corresponding path program 1 times [2019-10-07 14:36:34,390 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:36:34,390 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:34,390 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:34,391 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:34,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:36:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 14:36:34,555 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:34,556 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:36:34,556 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:36:34,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:36:34,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:36:34,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:36:34,557 INFO L87 Difference]: Start difference. First operand 355017 states and 657349 transitions. Second operand 7 states. [2019-10-07 14:37:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:37:13,232 INFO L93 Difference]: Finished difference Result 597625 states and 1153673 transitions. [2019-10-07 14:37:13,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:37:13,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2019-10-07 14:37:13,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:37:16,124 INFO L225 Difference]: With dead ends: 597625 [2019-10-07 14:37:16,125 INFO L226 Difference]: Without dead ends: 363243 [2019-10-07 14:37:18,153 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:37:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363243 states. [2019-10-07 14:37:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363243 to 361267. [2019-10-07 14:37:56,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361267 states. [2019-10-07 14:38:01,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361267 states to 361267 states and 667903 transitions. [2019-10-07 14:38:01,704 INFO L78 Accepts]: Start accepts. Automaton has 361267 states and 667903 transitions. Word has length 198 [2019-10-07 14:38:01,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:38:01,705 INFO L462 AbstractCegarLoop]: Abstraction has 361267 states and 667903 transitions. [2019-10-07 14:38:01,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:38:01,705 INFO L276 IsEmpty]: Start isEmpty. Operand 361267 states and 667903 transitions. [2019-10-07 14:38:01,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-07 14:38:01,712 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:38:01,712 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:38:01,712 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:38:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:38:01,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1845084806, now seen corresponding path program 1 times [2019-10-07 14:38:01,713 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:38:01,713 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:38:01,713 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:38:01,713 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:38:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:38:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:38:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 14:38:01,938 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:38:01,938 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:38:01,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:38:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:38:02,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 3478 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-07 14:38:02,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:38:02,932 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2019-10-07 14:38:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 14:38:03,883 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:38:04,311 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:38:04,742 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:38:04,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:38:04,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:38:04,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:38:04,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:38:04,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:38:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-07 14:38:04,851 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:38:04,851 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 7] total 20 [2019-10-07 14:38:04,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:38:04,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:38:04,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:38:04,852 INFO L87 Difference]: Start difference. First operand 361267 states and 667903 transitions. Second operand 6 states. [2019-10-07 14:39:07,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:39:07,402 INFO L93 Difference]: Finished difference Result 1030645 states and 2167040 transitions. [2019-10-07 14:39:07,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:39:07,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2019-10-07 14:39:07,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:39:13,954 INFO L225 Difference]: With dead ends: 1030645 [2019-10-07 14:39:13,955 INFO L226 Difference]: Without dead ends: 669283 [2019-10-07 14:39:18,516 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 396 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:39:18,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669283 states.