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_spec13_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:57:57,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:57:57,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:57:57,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:57:57,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:57:57,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:57:57,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:57:57,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:57:57,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:57:57,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:57:57,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:57:57,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:57:57,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:57:57,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:57:57,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:57:57,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:57:57,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:57:57,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:57:57,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:57:57,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:57:57,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:57:57,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:57:57,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:57:57,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:57:57,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:57:57,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:57:57,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:57:57,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:57:57,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:57:57,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:57:57,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:57:57,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:57:57,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:57:57,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:57:57,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:57:57,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:57:57,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:57:57,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:57:57,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:57:57,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:57:57,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:57:57,643 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 13:57:57,668 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:57:57,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:57:57,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:57:57,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:57:57,670 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:57:57,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:57:57,670 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:57:57,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:57:57,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:57:57,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:57:57,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:57:57,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:57:57,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:57:57,672 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:57:57,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:57:57,672 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:57:57,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:57:57,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:57:57,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:57:57,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:57:57,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:57:57,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:57:57,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:57:57,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:57:57,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:57:57,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:57:57,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:57:57,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:57:57,675 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 13:57:57,967 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:57:57,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:57:57,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:57:57,993 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:57:57,993 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:57:57,994 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c [2019-10-07 13:57:58,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7cc109ad/a8ee2a5917774225a49a606cbdd3b731/FLAG38cf76991 [2019-10-07 13:57:58,699 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:57:58,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c [2019-10-07 13:57:58,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7cc109ad/a8ee2a5917774225a49a606cbdd3b731/FLAG38cf76991 [2019-10-07 13:57:58,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7cc109ad/a8ee2a5917774225a49a606cbdd3b731 [2019-10-07 13:57:58,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:57:58,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:57:58,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:57:58,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:57:58,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:57:58,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:57:58" (1/1) ... [2019-10-07 13:57:58,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d8693f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:57:58, skipping insertion in model container [2019-10-07 13:57:58,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:57:58" (1/1) ... [2019-10-07 13:57:58,929 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:57:59,007 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:57:59,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:57:59,691 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:57:59,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:57:59,887 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:57:59,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:57:59 WrapperNode [2019-10-07 13:57:59,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:57:59,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:57:59,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:57:59,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:57:59,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:57:59" (1/1) ... [2019-10-07 13:57:59,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:57:59" (1/1) ... [2019-10-07 13:57:59,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:57:59" (1/1) ... [2019-10-07 13:57:59,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:57:59" (1/1) ... [2019-10-07 13:58:00,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:57:59" (1/1) ... [2019-10-07 13:58:00,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:57:59" (1/1) ... [2019-10-07 13:58:00,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:57:59" (1/1) ... [2019-10-07 13:58:00,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:58:00,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:58:00,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:58:00,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:58:00,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:57:59" (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 13:58:00,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:58:00,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:58:00,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 13:58:00,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 13:58:00,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 13:58:00,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 13:58:00,167 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 13:58:00,167 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 13:58:00,167 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 13:58:00,167 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 13:58:00,168 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 13:58:00,168 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 13:58:00,168 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 13:58:00,168 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 13:58:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-07 13:58:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-07 13:58:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 13:58:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 13:58:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 13:58:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 13:58:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 13:58:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 13:58:00,171 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 13:58:00,171 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 13:58:00,171 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 13:58:00,171 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 13:58:00,172 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 13:58:00,172 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 13:58:00,172 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 13:58:00,172 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 13:58:00,172 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 13:58:00,173 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 13:58:00,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:58:00,173 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 13:58:00,173 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 13:58:00,173 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 13:58:00,174 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 13:58:00,174 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 13:58:00,174 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 13:58:00,174 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 13:58:00,174 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 13:58:00,175 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-07 13:58:00,175 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 13:58:00,175 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 13:58:00,175 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 13:58:00,175 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 13:58:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 13:58:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 13:58:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 13:58:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 13:58:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 13:58:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 13:58:00,177 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 13:58:00,177 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 13:58:00,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 13:58:00,177 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 13:58:00,177 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 13:58:00,178 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 13:58:00,178 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 13:58:00,178 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 13:58:00,178 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-07 13:58:00,178 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 13:58:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-07 13:58:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 13:58:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 13:58:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 13:58:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 13:58:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 13:58:00,180 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 13:58:00,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 13:58:00,180 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 13:58:00,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 13:58:00,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 13:58:00,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 13:58:00,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 13:58:00,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 13:58:00,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 13:58:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:58:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:58:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 13:58:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 13:58:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 13:58:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 13:58:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 13:58:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 13:58:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 13:58:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 13:58:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 13:58:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 13:58:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 13:58:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 13:58:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 13:58:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-07 13:58:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 13:58:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-07 13:58:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:58:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 13:58:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 13:58:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 13:58:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 13:58:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 13:58:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 13:58:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 13:58:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 13:58:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 13:58:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 13:58:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 13:58:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 13:58:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 13:58:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 13:58:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 13:58:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 13:58:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 13:58:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 13:58:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 13:58:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 13:58:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 13:58:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 13:58:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 13:58:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 13:58:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 13:58:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:58:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 13:58:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 13:58:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 13:58:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 13:58:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 13:58:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 13:58:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 13:58:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 13:58:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 13:58:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 13:58:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 13:58:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 13:58:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-07 13:58:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 13:58:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 13:58:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 13:58:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 13:58:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 13:58:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 13:58:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 13:58:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 13:58:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 13:58:00,202 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 13:58:00,202 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 13:58:00,202 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-07 13:58:00,203 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-07 13:58:00,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:58:00,203 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 13:58:00,203 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 13:58:00,203 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:58:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:58:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 13:58:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:58:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:58:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:58:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:58:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 13:58:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:58:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 13:58:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 13:58:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:58:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 13:58:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 13:58:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 13:58:00,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:58:00,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 13:58:00,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:58:05,256 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:58:05,257 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 13:58:05,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:58:05 BoogieIcfgContainer [2019-10-07 13:58:05,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:58:05,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:58:05,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:58:05,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:58:05,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:57:58" (1/3) ... [2019-10-07 13:58:05,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a0e180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:58:05, skipping insertion in model container [2019-10-07 13:58:05,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:57:59" (2/3) ... [2019-10-07 13:58:05,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a0e180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:58:05, skipping insertion in model container [2019-10-07 13:58:05,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:58:05" (3/3) ... [2019-10-07 13:58:05,267 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product30.cil.c [2019-10-07 13:58:05,277 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:58:05,287 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:58:05,299 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:58:05,331 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:58:05,331 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:58:05,331 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:58:05,331 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:58:05,331 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:58:05,331 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:58:05,331 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:58:05,332 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:58:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states. [2019-10-07 13:58:05,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-07 13:58:05,384 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:05,386 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:05,388 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:05,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:05,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1446989103, now seen corresponding path program 1 times [2019-10-07 13:58:05,403 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:05,404 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:05,404 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:05,404 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:05,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-07 13:58:06,152 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:06,152 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:58:06,154 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 13:58:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:06,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-07 13:58:06,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:58:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:58:06,960 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:58:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:07,141 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:58:07,141 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-10-07 13:58:07,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:58:07,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:58:07,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:58:07,165 INFO L87 Difference]: Start difference. First operand 611 states. Second operand 4 states. [2019-10-07 13:58:08,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:08,272 INFO L93 Difference]: Finished difference Result 1866 states and 2887 transitions. [2019-10-07 13:58:08,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:58:08,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2019-10-07 13:58:08,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:08,343 INFO L225 Difference]: With dead ends: 1866 [2019-10-07 13:58:08,343 INFO L226 Difference]: Without dead ends: 1374 [2019-10-07 13:58:08,363 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:58:08,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2019-10-07 13:58:08,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1282. [2019-10-07 13:58:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1282 states. [2019-10-07 13:58:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1964 transitions. [2019-10-07 13:58:08,806 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1964 transitions. Word has length 95 [2019-10-07 13:58:08,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:08,807 INFO L462 AbstractCegarLoop]: Abstraction has 1282 states and 1964 transitions. [2019-10-07 13:58:08,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:58:08,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1964 transitions. [2019-10-07 13:58:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-07 13:58:08,824 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:08,825 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:09,041 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:58:09,042 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:09,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:09,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1536710755, now seen corresponding path program 1 times [2019-10-07 13:58:09,042 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:09,042 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:09,043 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:09,043 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:09,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:09,465 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:09,465 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:58:09,465 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 13:58:09,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 13:58:09,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 13:58:09,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:58:09,471 INFO L87 Difference]: Start difference. First operand 1282 states and 1964 transitions. Second operand 10 states. [2019-10-07 13:58:11,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:11,120 INFO L93 Difference]: Finished difference Result 2724 states and 4187 transitions. [2019-10-07 13:58:11,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 13:58:11,121 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 136 [2019-10-07 13:58:11,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:11,133 INFO L225 Difference]: With dead ends: 2724 [2019-10-07 13:58:11,134 INFO L226 Difference]: Without dead ends: 1479 [2019-10-07 13:58:11,141 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 13:58:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2019-10-07 13:58:11,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1471. [2019-10-07 13:58:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1471 states. [2019-10-07 13:58:11,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2234 transitions. [2019-10-07 13:58:11,221 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2234 transitions. Word has length 136 [2019-10-07 13:58:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:11,222 INFO L462 AbstractCegarLoop]: Abstraction has 1471 states and 2234 transitions. [2019-10-07 13:58:11,222 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 13:58:11,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2234 transitions. [2019-10-07 13:58:11,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-07 13:58:11,227 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:11,227 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:11,227 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:11,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:11,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1792045812, now seen corresponding path program 1 times [2019-10-07 13:58:11,228 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:11,228 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:11,228 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:11,228 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:11,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:11,477 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:11,477 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:58:11,477 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 13:58:11,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 13:58:11,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 13:58:11,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:58:11,479 INFO L87 Difference]: Start difference. First operand 1471 states and 2234 transitions. Second operand 9 states. [2019-10-07 13:58:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:17,168 INFO L93 Difference]: Finished difference Result 4369 states and 6726 transitions. [2019-10-07 13:58:17,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-07 13:58:17,174 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2019-10-07 13:58:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:17,199 INFO L225 Difference]: With dead ends: 4369 [2019-10-07 13:58:17,199 INFO L226 Difference]: Without dead ends: 2938 [2019-10-07 13:58:17,209 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-10-07 13:58:17,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2019-10-07 13:58:17,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2822. [2019-10-07 13:58:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2019-10-07 13:58:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 4344 transitions. [2019-10-07 13:58:17,460 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 4344 transitions. Word has length 137 [2019-10-07 13:58:17,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:17,461 INFO L462 AbstractCegarLoop]: Abstraction has 2822 states and 4344 transitions. [2019-10-07 13:58:17,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 13:58:17,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 4344 transitions. [2019-10-07 13:58:17,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-07 13:58:17,465 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:17,466 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:17,466 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:17,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:17,466 INFO L82 PathProgramCache]: Analyzing trace with hash 173874336, now seen corresponding path program 1 times [2019-10-07 13:58:17,467 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:17,467 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:17,467 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:17,467 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:17,677 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:17,677 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:58:17,677 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:58:17,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:58:17,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:58:17,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:58:17,679 INFO L87 Difference]: Start difference. First operand 2822 states and 4344 transitions. Second operand 7 states. [2019-10-07 13:58:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:17,838 INFO L93 Difference]: Finished difference Result 4597 states and 7148 transitions. [2019-10-07 13:58:17,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 13:58:17,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2019-10-07 13:58:17,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:17,865 INFO L225 Difference]: With dead ends: 4597 [2019-10-07 13:58:17,866 INFO L226 Difference]: Without dead ends: 2892 [2019-10-07 13:58:17,881 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 13:58:17,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2019-10-07 13:58:18,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2864. [2019-10-07 13:58:18,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2019-10-07 13:58:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4404 transitions. [2019-10-07 13:58:18,068 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4404 transitions. Word has length 141 [2019-10-07 13:58:18,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:18,074 INFO L462 AbstractCegarLoop]: Abstraction has 2864 states and 4404 transitions. [2019-10-07 13:58:18,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:58:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4404 transitions. [2019-10-07 13:58:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-07 13:58:18,086 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:18,086 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:18,087 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:18,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:18,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1741600244, now seen corresponding path program 1 times [2019-10-07 13:58:18,087 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:18,088 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:18,088 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:18,088 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:18,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:18,333 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:18,334 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:58:18,334 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:58:18,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:58:18,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:58:18,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:58:18,336 INFO L87 Difference]: Start difference. First operand 2864 states and 4404 transitions. Second operand 7 states. [2019-10-07 13:58:18,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:18,473 INFO L93 Difference]: Finished difference Result 4655 states and 7224 transitions. [2019-10-07 13:58:18,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 13:58:18,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2019-10-07 13:58:18,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:18,495 INFO L225 Difference]: With dead ends: 4655 [2019-10-07 13:58:18,495 INFO L226 Difference]: Without dead ends: 2922 [2019-10-07 13:58:18,506 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 13:58:18,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2019-10-07 13:58:18,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2870. [2019-10-07 13:58:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2870 states. [2019-10-07 13:58:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4410 transitions. [2019-10-07 13:58:18,659 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4410 transitions. Word has length 142 [2019-10-07 13:58:18,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:18,661 INFO L462 AbstractCegarLoop]: Abstraction has 2870 states and 4410 transitions. [2019-10-07 13:58:18,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:58:18,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4410 transitions. [2019-10-07 13:58:18,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-07 13:58:18,669 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:18,669 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:18,669 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:18,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:18,670 INFO L82 PathProgramCache]: Analyzing trace with hash 756657108, now seen corresponding path program 1 times [2019-10-07 13:58:18,670 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:18,670 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:18,670 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:18,670 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:18,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:18,973 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:18,975 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:18,976 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:58:18,976 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:58:18,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:58:18,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:58:18,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:58:18,978 INFO L87 Difference]: Start difference. First operand 2870 states and 4410 transitions. Second operand 7 states. [2019-10-07 13:58:19,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:19,132 INFO L93 Difference]: Finished difference Result 4665 states and 7234 transitions. [2019-10-07 13:58:19,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 13:58:19,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2019-10-07 13:58:19,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:19,154 INFO L225 Difference]: With dead ends: 4665 [2019-10-07 13:58:19,154 INFO L226 Difference]: Without dead ends: 2928 [2019-10-07 13:58:19,165 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 13:58:19,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2019-10-07 13:58:19,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2876. [2019-10-07 13:58:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2876 states. [2019-10-07 13:58:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 4416 transitions. [2019-10-07 13:58:19,302 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 4416 transitions. Word has length 142 [2019-10-07 13:58:19,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:19,304 INFO L462 AbstractCegarLoop]: Abstraction has 2876 states and 4416 transitions. [2019-10-07 13:58:19,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:58:19,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 4416 transitions. [2019-10-07 13:58:19,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-07 13:58:19,309 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:19,310 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:19,310 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:19,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:19,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1275886392, now seen corresponding path program 1 times [2019-10-07 13:58:19,312 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:19,312 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:19,312 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:19,312 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:19,576 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:19,576 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:58:19,576 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:58:19,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:58:19,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:58:19,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:58:19,577 INFO L87 Difference]: Start difference. First operand 2876 states and 4416 transitions. Second operand 7 states. [2019-10-07 13:58:23,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:23,257 INFO L93 Difference]: Finished difference Result 6498 states and 10201 transitions. [2019-10-07 13:58:23,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 13:58:23,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2019-10-07 13:58:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:23,290 INFO L225 Difference]: With dead ends: 6498 [2019-10-07 13:58:23,290 INFO L226 Difference]: Without dead ends: 4507 [2019-10-07 13:58:23,306 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:58:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2019-10-07 13:58:23,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 4307. [2019-10-07 13:58:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2019-10-07 13:58:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 6517 transitions. [2019-10-07 13:58:23,622 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 6517 transitions. Word has length 145 [2019-10-07 13:58:23,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:23,623 INFO L462 AbstractCegarLoop]: Abstraction has 4307 states and 6517 transitions. [2019-10-07 13:58:23,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:58:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 6517 transitions. [2019-10-07 13:58:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-07 13:58:23,630 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:23,631 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:23,631 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:23,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:23,631 INFO L82 PathProgramCache]: Analyzing trace with hash 338848400, now seen corresponding path program 1 times [2019-10-07 13:58:23,632 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:23,632 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:23,632 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:23,632 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:23,919 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:23,920 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:58:23,920 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 13:58:23,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 13:58:23,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 13:58:23,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:58:23,921 INFO L87 Difference]: Start difference. First operand 4307 states and 6517 transitions. Second operand 9 states. [2019-10-07 13:58:24,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:24,309 INFO L93 Difference]: Finished difference Result 8185 states and 12666 transitions. [2019-10-07 13:58:24,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 13:58:24,310 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 148 [2019-10-07 13:58:24,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:24,369 INFO L225 Difference]: With dead ends: 8185 [2019-10-07 13:58:24,370 INFO L226 Difference]: Without dead ends: 4715 [2019-10-07 13:58:24,403 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-07 13:58:24,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2019-10-07 13:58:24,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4715. [2019-10-07 13:58:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4715 states. [2019-10-07 13:58:24,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 7125 transitions. [2019-10-07 13:58:24,731 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 7125 transitions. Word has length 148 [2019-10-07 13:58:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:24,731 INFO L462 AbstractCegarLoop]: Abstraction has 4715 states and 7125 transitions. [2019-10-07 13:58:24,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 13:58:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 7125 transitions. [2019-10-07 13:58:24,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-07 13:58:24,736 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:24,736 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:24,737 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:24,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:24,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2128988024, now seen corresponding path program 1 times [2019-10-07 13:58:24,738 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:24,738 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:24,738 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:24,738 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:24,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:24,969 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:24,970 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:58:24,970 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 13:58:24,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 13:58:24,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 13:58:24,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:58:24,971 INFO L87 Difference]: Start difference. First operand 4715 states and 7125 transitions. Second operand 6 states. [2019-10-07 13:58:30,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:30,542 INFO L93 Difference]: Finished difference Result 15435 states and 25434 transitions. [2019-10-07 13:58:30,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 13:58:30,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2019-10-07 13:58:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:30,615 INFO L225 Difference]: With dead ends: 15435 [2019-10-07 13:58:30,616 INFO L226 Difference]: Without dead ends: 10757 [2019-10-07 13:58:30,644 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:58:30,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10757 states. [2019-10-07 13:58:31,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10757 to 10140. [2019-10-07 13:58:31,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10140 states. [2019-10-07 13:58:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10140 states to 10140 states and 15861 transitions. [2019-10-07 13:58:31,205 INFO L78 Accepts]: Start accepts. Automaton has 10140 states and 15861 transitions. Word has length 149 [2019-10-07 13:58:31,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:31,205 INFO L462 AbstractCegarLoop]: Abstraction has 10140 states and 15861 transitions. [2019-10-07 13:58:31,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 13:58:31,206 INFO L276 IsEmpty]: Start isEmpty. Operand 10140 states and 15861 transitions. [2019-10-07 13:58:31,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-07 13:58:31,211 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:31,212 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:31,212 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:31,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:31,212 INFO L82 PathProgramCache]: Analyzing trace with hash 2050471785, now seen corresponding path program 1 times [2019-10-07 13:58:31,213 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:31,213 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:31,213 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:31,213 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:31,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:31,458 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:31,459 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:58:31,459 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:58:31,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:58:31,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:58:31,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:58:31,461 INFO L87 Difference]: Start difference. First operand 10140 states and 15861 transitions. Second operand 7 states. [2019-10-07 13:58:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:35,761 INFO L93 Difference]: Finished difference Result 18472 states and 29716 transitions. [2019-10-07 13:58:35,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 13:58:35,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2019-10-07 13:58:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:35,827 INFO L225 Difference]: With dead ends: 18472 [2019-10-07 13:58:35,828 INFO L226 Difference]: Without dead ends: 10780 [2019-10-07 13:58:35,858 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:58:35,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10780 states. [2019-10-07 13:58:36,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10780 to 10248. [2019-10-07 13:58:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10248 states. [2019-10-07 13:58:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10248 states to 10248 states and 15997 transitions. [2019-10-07 13:58:36,367 INFO L78 Accepts]: Start accepts. Automaton has 10248 states and 15997 transitions. Word has length 150 [2019-10-07 13:58:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:36,369 INFO L462 AbstractCegarLoop]: Abstraction has 10248 states and 15997 transitions. [2019-10-07 13:58:36,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:58:36,369 INFO L276 IsEmpty]: Start isEmpty. Operand 10248 states and 15997 transitions. [2019-10-07 13:58:36,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-07 13:58:36,374 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:36,375 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:36,375 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:36,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:36,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1318831606, now seen corresponding path program 1 times [2019-10-07 13:58:36,375 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:36,376 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:36,376 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:36,376 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:58:36,554 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:36,555 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:58:36,555 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 13:58:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:37,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 3237 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:58:37,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:58:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:58:37,138 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:58:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:58:37,333 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:58:37,333 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-07 13:58:37,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:58:37,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:58:37,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:58:37,335 INFO L87 Difference]: Start difference. First operand 10248 states and 15997 transitions. Second operand 4 states. [2019-10-07 13:58:37,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:37,778 INFO L93 Difference]: Finished difference Result 20633 states and 33299 transitions. [2019-10-07 13:58:37,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:58:37,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2019-10-07 13:58:37,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:37,836 INFO L225 Difference]: With dead ends: 20633 [2019-10-07 13:58:37,836 INFO L226 Difference]: Without dead ends: 10422 [2019-10-07 13:58:37,883 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:58:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10422 states. [2019-10-07 13:58:38,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10422 to 10422. [2019-10-07 13:58:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10422 states. [2019-10-07 13:58:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10422 states to 10422 states and 16171 transitions. [2019-10-07 13:58:38,426 INFO L78 Accepts]: Start accepts. Automaton has 10422 states and 16171 transitions. Word has length 155 [2019-10-07 13:58:38,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:38,426 INFO L462 AbstractCegarLoop]: Abstraction has 10422 states and 16171 transitions. [2019-10-07 13:58:38,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:58:38,426 INFO L276 IsEmpty]: Start isEmpty. Operand 10422 states and 16171 transitions. [2019-10-07 13:58:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-07 13:58:38,432 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:38,432 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:38,640 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:58:38,640 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:38,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:38,641 INFO L82 PathProgramCache]: Analyzing trace with hash -220426463, now seen corresponding path program 1 times [2019-10-07 13:58:38,641 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:38,641 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:38,642 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:38,642 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:38,804 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:38,805 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:58:38,805 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 13:58:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:39,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 3242 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:58:39,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:58:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-07 13:58:39,403 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:58:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:58:39,555 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:58:39,555 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-07 13:58:39,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:58:39,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:58:39,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:58:39,556 INFO L87 Difference]: Start difference. First operand 10422 states and 16171 transitions. Second operand 5 states. [2019-10-07 13:58:39,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:39,956 INFO L93 Difference]: Finished difference Result 20894 states and 33383 transitions. [2019-10-07 13:58:39,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:58:39,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2019-10-07 13:58:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:40,018 INFO L225 Difference]: With dead ends: 20894 [2019-10-07 13:58:40,019 INFO L226 Difference]: Without dead ends: 10393 [2019-10-07 13:58:40,061 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:58:40,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10393 states. [2019-10-07 13:58:40,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10393 to 10393. [2019-10-07 13:58:40,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10393 states. [2019-10-07 13:58:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10393 states to 10393 states and 16055 transitions. [2019-10-07 13:58:40,548 INFO L78 Accepts]: Start accepts. Automaton has 10393 states and 16055 transitions. Word has length 157 [2019-10-07 13:58:40,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:40,549 INFO L462 AbstractCegarLoop]: Abstraction has 10393 states and 16055 transitions. [2019-10-07 13:58:40,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:58:40,549 INFO L276 IsEmpty]: Start isEmpty. Operand 10393 states and 16055 transitions. [2019-10-07 13:58:40,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-07 13:58:40,554 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:40,554 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:40,770 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:58:40,771 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:40,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:40,771 INFO L82 PathProgramCache]: Analyzing trace with hash -27713964, now seen corresponding path program 1 times [2019-10-07 13:58:40,772 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:40,772 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:40,772 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:40,772 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:40,924 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 13:58:40,924 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:40,924 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:58:40,924 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 13:58:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:41,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 3246 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:58:41,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:58:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:58:41,600 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:58:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:58:41,842 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:58:41,842 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-07 13:58:41,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:58:41,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:58:41,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:58:41,843 INFO L87 Difference]: Start difference. First operand 10393 states and 16055 transitions. Second operand 5 states. [2019-10-07 13:58:43,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:43,511 INFO L93 Difference]: Finished difference Result 27604 states and 46128 transitions. [2019-10-07 13:58:43,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:58:43,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-10-07 13:58:43,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:43,605 INFO L225 Difference]: With dead ends: 27604 [2019-10-07 13:58:43,605 INFO L226 Difference]: Without dead ends: 17248 [2019-10-07 13:58:43,662 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 308 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:58:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17248 states. [2019-10-07 13:58:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17248 to 16992. [2019-10-07 13:58:44,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16992 states. [2019-10-07 13:58:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16992 states to 16992 states and 27189 transitions. [2019-10-07 13:58:44,413 INFO L78 Accepts]: Start accepts. Automaton has 16992 states and 27189 transitions. Word has length 158 [2019-10-07 13:58:44,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:44,413 INFO L462 AbstractCegarLoop]: Abstraction has 16992 states and 27189 transitions. [2019-10-07 13:58:44,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:58:44,414 INFO L276 IsEmpty]: Start isEmpty. Operand 16992 states and 27189 transitions. [2019-10-07 13:58:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-07 13:58:44,419 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:44,419 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:44,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:58:44,627 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:44,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:44,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1954643300, now seen corresponding path program 1 times [2019-10-07 13:58:44,628 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:44,628 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:44,628 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:44,628 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:44,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:58:45,892 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:45,892 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:58:45,892 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 13:58:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:46,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 3249 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:58:46,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:58:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 13:58:46,526 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:58:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:58:46,748 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:58:46,748 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 8 [2019-10-07 13:58:46,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:58:46,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:58:46,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:58:46,750 INFO L87 Difference]: Start difference. First operand 16992 states and 27189 transitions. Second operand 5 states. [2019-10-07 13:58:47,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:47,367 INFO L93 Difference]: Finished difference Result 34327 states and 57841 transitions. [2019-10-07 13:58:47,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:58:47,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2019-10-07 13:58:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:47,435 INFO L225 Difference]: With dead ends: 34327 [2019-10-07 13:58:47,435 INFO L226 Difference]: Without dead ends: 17372 [2019-10-07 13:58:47,492 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 313 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:58:47,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17372 states. [2019-10-07 13:58:48,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17372 to 17198. [2019-10-07 13:58:48,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17198 states. [2019-10-07 13:58:48,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17198 states to 17198 states and 27451 transitions. [2019-10-07 13:58:48,457 INFO L78 Accepts]: Start accepts. Automaton has 17198 states and 27451 transitions. Word has length 159 [2019-10-07 13:58:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:48,458 INFO L462 AbstractCegarLoop]: Abstraction has 17198 states and 27451 transitions. [2019-10-07 13:58:48,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:58:48,458 INFO L276 IsEmpty]: Start isEmpty. Operand 17198 states and 27451 transitions. [2019-10-07 13:58:48,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-07 13:58:48,463 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:48,463 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:48,670 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:58:48,671 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:48,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:48,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1650267818, now seen corresponding path program 1 times [2019-10-07 13:58:48,672 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:48,672 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:48,672 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:48,672 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:48,856 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:48,856 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:58:48,856 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 13:58:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:49,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 3246 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-07 13:58:49,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:58:49,573 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 13:58:49,574 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:58:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:49,878 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:58:49,878 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2019-10-07 13:58:49,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:58:49,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:58:49,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-07 13:58:49,879 INFO L87 Difference]: Start difference. First operand 17198 states and 27451 transitions. Second operand 7 states. [2019-10-07 13:58:52,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:52,186 INFO L93 Difference]: Finished difference Result 38870 states and 66465 transitions. [2019-10-07 13:58:52,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 13:58:52,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2019-10-07 13:58:52,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:52,272 INFO L225 Difference]: With dead ends: 38870 [2019-10-07 13:58:52,272 INFO L226 Difference]: Without dead ends: 21709 [2019-10-07 13:58:52,311 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 305 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-10-07 13:58:52,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21709 states. [2019-10-07 13:58:53,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21709 to 21591. [2019-10-07 13:58:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21591 states. [2019-10-07 13:58:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21591 states to 21591 states and 38423 transitions. [2019-10-07 13:58:53,215 INFO L78 Accepts]: Start accepts. Automaton has 21591 states and 38423 transitions. Word has length 158 [2019-10-07 13:58:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:53,215 INFO L462 AbstractCegarLoop]: Abstraction has 21591 states and 38423 transitions. [2019-10-07 13:58:53,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:58:53,215 INFO L276 IsEmpty]: Start isEmpty. Operand 21591 states and 38423 transitions. [2019-10-07 13:58:53,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-07 13:58:53,221 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:53,221 INFO L385 BasicCegarLoop]: trace histogram [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 13:58:53,429 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:58:53,429 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:53,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:53,430 INFO L82 PathProgramCache]: Analyzing trace with hash -2002281414, now seen corresponding path program 1 times [2019-10-07 13:58:53,430 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:53,430 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:53,431 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:53,431 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:58:53,593 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:53,593 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:58:53,594 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 13:58:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:54,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 3252 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:58:54,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:58:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 13:58:54,280 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:58:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:58:54,433 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:58:54,433 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 10 [2019-10-07 13:58:54,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:58:54,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:58:54,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:58:54,435 INFO L87 Difference]: Start difference. First operand 21591 states and 38423 transitions. Second operand 4 states. [2019-10-07 13:58:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:55,730 INFO L93 Difference]: Finished difference Result 44197 states and 83811 transitions. [2019-10-07 13:58:55,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:58:55,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-10-07 13:58:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:55,820 INFO L225 Difference]: With dead ends: 44197 [2019-10-07 13:58:55,820 INFO L226 Difference]: Without dead ends: 22657 [2019-10-07 13:58:55,918 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:58:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22657 states. [2019-10-07 13:58:56,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22657 to 22463. [2019-10-07 13:58:56,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22463 states. [2019-10-07 13:58:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22463 states to 22463 states and 39819 transitions. [2019-10-07 13:58:58,810 INFO L78 Accepts]: Start accepts. Automaton has 22463 states and 39819 transitions. Word has length 160 [2019-10-07 13:58:58,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:58,810 INFO L462 AbstractCegarLoop]: Abstraction has 22463 states and 39819 transitions. [2019-10-07 13:58:58,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:58:58,811 INFO L276 IsEmpty]: Start isEmpty. Operand 22463 states and 39819 transitions. [2019-10-07 13:58:58,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-07 13:58:58,815 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:58,815 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:59,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:58:59,023 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:59,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:59,024 INFO L82 PathProgramCache]: Analyzing trace with hash -2067722790, now seen corresponding path program 1 times [2019-10-07 13:58:59,024 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:59,025 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:59,025 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:59,025 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:59,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:58:59,207 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:59,207 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:58:59,207 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 13:58:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:59,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 3255 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:58:59,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:58:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:58:59,971 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:59:00,179 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:00,179 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 12 [2019-10-07 13:59:00,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:59:00,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:59:00,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:59:00,180 INFO L87 Difference]: Start difference. First operand 22463 states and 39819 transitions. Second operand 5 states. [2019-10-07 13:59:02,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:02,794 INFO L93 Difference]: Finished difference Result 57084 states and 114650 transitions. [2019-10-07 13:59:02,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:59:02,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2019-10-07 13:59:02,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:02,943 INFO L225 Difference]: With dead ends: 57084 [2019-10-07 13:59:02,943 INFO L226 Difference]: Without dead ends: 37367 [2019-10-07 13:59:03,046 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 324 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:59:03,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37367 states. [2019-10-07 13:59:04,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37367 to 36150. [2019-10-07 13:59:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36150 states. [2019-10-07 13:59:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36150 states to 36150 states and 71226 transitions. [2019-10-07 13:59:05,250 INFO L78 Accepts]: Start accepts. Automaton has 36150 states and 71226 transitions. Word has length 163 [2019-10-07 13:59:05,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:05,251 INFO L462 AbstractCegarLoop]: Abstraction has 36150 states and 71226 transitions. [2019-10-07 13:59:05,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:59:05,251 INFO L276 IsEmpty]: Start isEmpty. Operand 36150 states and 71226 transitions. [2019-10-07 13:59:05,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-07 13:59:05,254 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:05,255 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:59:05,463 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:05,463 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:05,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:05,464 INFO L82 PathProgramCache]: Analyzing trace with hash -38060604, now seen corresponding path program 1 times [2019-10-07 13:59:05,464 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:05,464 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:05,464 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:05,464 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:59:05,611 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:05,611 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:05,612 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 13:59:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:06,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 3254 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:59:06,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:59:06,276 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:59:06,412 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:06,412 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2019-10-07 13:59:06,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:59:06,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:59:06,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:59:06,414 INFO L87 Difference]: Start difference. First operand 36150 states and 71226 transitions. Second operand 4 states. [2019-10-07 13:59:07,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:07,897 INFO L93 Difference]: Finished difference Result 70700 states and 149490 transitions. [2019-10-07 13:59:07,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:59:07,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2019-10-07 13:59:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:08,066 INFO L225 Difference]: With dead ends: 70700 [2019-10-07 13:59:08,066 INFO L226 Difference]: Without dead ends: 34601 [2019-10-07 13:59:08,913 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:59:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34601 states. [2019-10-07 13:59:10,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34601 to 33573. [2019-10-07 13:59:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33573 states. [2019-10-07 13:59:10,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33573 states to 33573 states and 62966 transitions. [2019-10-07 13:59:10,366 INFO L78 Accepts]: Start accepts. Automaton has 33573 states and 62966 transitions. Word has length 163 [2019-10-07 13:59:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:10,366 INFO L462 AbstractCegarLoop]: Abstraction has 33573 states and 62966 transitions. [2019-10-07 13:59:10,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:59:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 33573 states and 62966 transitions. [2019-10-07 13:59:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-07 13:59:10,369 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:10,369 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:59:10,570 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:10,570 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:10,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:10,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1397091858, now seen corresponding path program 1 times [2019-10-07 13:59:10,571 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:10,571 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:10,572 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:10,572 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:10,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-07 13:59:10,715 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:10,716 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:10,716 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 13:59:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:11,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 3255 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:59:11,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 13:59:11,411 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:59:13,988 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:59:13,988 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 7 [2019-10-07 13:59:13,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:59:13,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:59:13,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:59:13,992 INFO L87 Difference]: Start difference. First operand 33573 states and 62966 transitions. Second operand 4 states. [2019-10-07 13:59:15,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:15,440 INFO L93 Difference]: Finished difference Result 68518 states and 144324 transitions. [2019-10-07 13:59:15,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:59:15,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-10-07 13:59:15,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:15,622 INFO L225 Difference]: With dead ends: 68518 [2019-10-07 13:59:15,622 INFO L226 Difference]: Without dead ends: 34996 [2019-10-07 13:59:15,833 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 328 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:59:15,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34996 states. [2019-10-07 13:59:17,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34996 to 34305. [2019-10-07 13:59:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34305 states. [2019-10-07 13:59:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34305 states to 34305 states and 64055 transitions. [2019-10-07 13:59:17,734 INFO L78 Accepts]: Start accepts. Automaton has 34305 states and 64055 transitions. Word has length 166 [2019-10-07 13:59:17,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:17,734 INFO L462 AbstractCegarLoop]: Abstraction has 34305 states and 64055 transitions. [2019-10-07 13:59:17,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:59:17,734 INFO L276 IsEmpty]: Start isEmpty. Operand 34305 states and 64055 transitions. [2019-10-07 13:59:17,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-07 13:59:17,738 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:17,738 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:59:17,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:17,946 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:17,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:17,946 INFO L82 PathProgramCache]: Analyzing trace with hash -513219096, now seen corresponding path program 1 times [2019-10-07 13:59:17,947 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:17,947 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:17,947 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:17,947 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:17,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:59:18,104 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:18,104 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:18,105 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 13:59:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:18,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:59:18,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:59:18,840 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:59:19,055 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:19,055 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-10-07 13:59:19,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:59:19,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:59:19,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:59:19,057 INFO L87 Difference]: Start difference. First operand 34305 states and 64055 transitions. Second operand 5 states. [2019-10-07 13:59:22,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:22,471 INFO L93 Difference]: Finished difference Result 81601 states and 168259 transitions. [2019-10-07 13:59:22,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:59:22,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2019-10-07 13:59:22,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:22,710 INFO L225 Difference]: With dead ends: 81601 [2019-10-07 13:59:22,711 INFO L226 Difference]: Without dead ends: 50750 [2019-10-07 13:59:22,924 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 342 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-10-07 13:59:22,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50750 states. [2019-10-07 13:59:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50750 to 49710. [2019-10-07 13:59:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49710 states. [2019-10-07 13:59:28,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49710 states to 49710 states and 101218 transitions. [2019-10-07 13:59:28,495 INFO L78 Accepts]: Start accepts. Automaton has 49710 states and 101218 transitions. Word has length 172 [2019-10-07 13:59:28,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:28,495 INFO L462 AbstractCegarLoop]: Abstraction has 49710 states and 101218 transitions. [2019-10-07 13:59:28,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:59:28,495 INFO L276 IsEmpty]: Start isEmpty. Operand 49710 states and 101218 transitions. [2019-10-07 13:59:28,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-07 13:59:28,498 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:28,499 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:59:28,701 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:28,701 INFO L410 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:28,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:28,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1531665166, now seen corresponding path program 1 times [2019-10-07 13:59:28,702 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:28,702 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:28,703 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:28,703 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:28,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:59:28,856 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:28,857 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:28,857 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 13:59:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:29,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:59:29,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:59:29,609 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:59:29,844 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:29,845 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 12 [2019-10-07 13:59:29,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:59:29,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:59:29,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:59:29,846 INFO L87 Difference]: Start difference. First operand 49710 states and 101218 transitions. Second operand 5 states. [2019-10-07 13:59:34,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:34,364 INFO L93 Difference]: Finished difference Result 112352 states and 247976 transitions. [2019-10-07 13:59:34,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:59:34,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2019-10-07 13:59:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:34,867 INFO L225 Difference]: With dead ends: 112352 [2019-10-07 13:59:34,868 INFO L226 Difference]: Without dead ends: 66169 [2019-10-07 13:59:35,319 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 342 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:59:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66169 states. [2019-10-07 13:59:42,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66169 to 64777. [2019-10-07 13:59:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64777 states. [2019-10-07 13:59:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64777 states to 64777 states and 142757 transitions. [2019-10-07 13:59:43,570 INFO L78 Accepts]: Start accepts. Automaton has 64777 states and 142757 transitions. Word has length 172 [2019-10-07 13:59:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:43,570 INFO L462 AbstractCegarLoop]: Abstraction has 64777 states and 142757 transitions. [2019-10-07 13:59:43,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:59:43,570 INFO L276 IsEmpty]: Start isEmpty. Operand 64777 states and 142757 transitions. [2019-10-07 13:59:43,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-07 13:59:43,575 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:43,576 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:59:43,776 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:43,777 INFO L410 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:43,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:43,777 INFO L82 PathProgramCache]: Analyzing trace with hash 126593650, now seen corresponding path program 1 times [2019-10-07 13:59:43,778 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:43,778 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:43,778 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:43,778 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:59:43,926 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:43,926 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:43,927 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 13:59:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:44,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 3269 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:59:44,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:59:44,636 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:59:44,774 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:44,775 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 6 [2019-10-07 13:59:44,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:59:44,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:59:44,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:59:44,776 INFO L87 Difference]: Start difference. First operand 64777 states and 142757 transitions. Second operand 3 states. [2019-10-07 13:59:57,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:57,294 INFO L93 Difference]: Finished difference Result 181055 states and 527814 transitions. [2019-10-07 13:59:57,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:59:57,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-10-07 13:59:57,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:58,101 INFO L225 Difference]: With dead ends: 181055 [2019-10-07 13:59:58,101 INFO L226 Difference]: Without dead ends: 116342 [2019-10-07 13:59:59,588 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:59:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116342 states. [2019-10-07 14:00:11,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116342 to 111801. [2019-10-07 14:00:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111801 states. [2019-10-07 14:00:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111801 states to 111801 states and 306315 transitions. [2019-10-07 14:00:22,581 INFO L78 Accepts]: Start accepts. Automaton has 111801 states and 306315 transitions. Word has length 174 [2019-10-07 14:00:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:00:22,581 INFO L462 AbstractCegarLoop]: Abstraction has 111801 states and 306315 transitions. [2019-10-07 14:00:22,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:00:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 111801 states and 306315 transitions. [2019-10-07 14:00:22,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-07 14:00:22,587 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:00:22,587 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:22,795 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:22,796 INFO L410 AbstractCegarLoop]: === Iteration 23 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:00:22,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:00:22,796 INFO L82 PathProgramCache]: Analyzing trace with hash -586074028, now seen corresponding path program 1 times [2019-10-07 14:00:22,797 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:00:22,797 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:22,797 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:22,797 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:00:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-07 14:00:22,938 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:22,938 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:00:22,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:00:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:23,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:00:23,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:00:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:00:23,707 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:00:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:00:23,858 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:00:23,887 INFO L162 IcfgInterpreter]: Started Sifa with 149 locations of interest [2019-10-07 14:00:23,887 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:00:23,894 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:00:23,901 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:00:23,902 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:01:12,458 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 767 [2019-10-07 14:01:17,409 WARN L191 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 430 DAG size of output: 347 [2019-10-07 14:01:17,878 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 860 [2019-10-07 14:01:18,299 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 860 [2019-10-07 14:01:19,138 WARN L191 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 860 [2019-10-07 14:01:19,715 WARN L191 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:01:20,187 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:01:21,133 WARN L191 SmtUtils]: Spent 941.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:01:21,641 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:01:27,726 WARN L191 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 1046 DAG size of output: 1044 [2019-10-07 14:01:28,182 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:01:28,696 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:01:29,170 WARN L191 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:01:29,635 WARN L191 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:01:30,128 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:01:30,148 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 385 for LOIs [2019-10-07 14:01:30,398 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 735 [2019-10-07 14:01:30,505 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 735 [2019-10-07 14:01:30,849 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 919 [2019-10-07 14:01:30,850 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1090 for LOIs [2019-10-07 14:01:31,288 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:31,737 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:31,852 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:32,595 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:33,053 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:33,506 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:33,747 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:34,545 WARN L191 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:35,026 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:35,467 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:35,654 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:36,399 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:37,189 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 1090 [2019-10-07 14:01:37,634 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:37,756 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:38,491 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:38,959 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:39,401 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:39,513 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:40,250 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:40,699 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:41,139 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:41,250 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:41,991 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:42,434 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:42,898 WARN L191 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:43,011 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:43,764 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:44,211 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:44,660 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:44,771 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:45,531 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:45,975 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:46,434 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:46,551 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:47,302 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:47,754 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:48,210 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:48,324 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:49,074 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:49,534 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:49,990 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:50,102 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:50,859 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:51,311 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:51,761 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:51,872 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:52,631 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:53,085 WARN L191 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:53,531 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:01:53,643 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:54,403 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:55,259 WARN L191 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:56,031 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:56,152 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:01:56,901 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:59,106 WARN L191 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:01:59,861 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:01:59,984 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:02:00,743 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:01,496 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:02,245 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:02,357 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:02:03,110 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:03,897 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:04,664 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:04,781 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:02:05,551 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:06,642 WARN L191 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:07,393 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:07,517 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:02:08,271 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:09,018 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:09,782 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:09,894 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:02:10,661 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:11,427 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:02:12,166 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:02:12,283 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:02:13,034 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:13,780 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:14,528 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:14,665 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:02:15,415 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:02:16,204 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:16,949 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:17,066 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:02:17,815 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:02:19,183 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1260 DAG size of output: 1256 [2019-10-07 14:02:19,929 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:20,054 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:02:20,812 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:02:21,560 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:22,304 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:22,416 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:02:23,167 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:02:24,548 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:02:25,285 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:25,427 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:02:26,179 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:27,519 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:02:28,262 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:28,380 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:02:29,118 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:29,850 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:30,591 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:30,703 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:02:31,440 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:32,212 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:32,957 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:33,079 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:02:33,823 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:34,582 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:35,332 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:35,459 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:02:36,208 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:36,954 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:37,703 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:37,815 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:02:38,561 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:39,929 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1263 DAG size of output: 1256 [2019-10-07 14:02:40,673 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:40,796 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:02:41,540 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:02:42,891 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1265 DAG size of output: 1258 [2019-10-07 14:02:43,639 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:02:43,758 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:02:44,507 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:02:46,171 WARN L191 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:02:46,917 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:47,035 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:02:47,769 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:49,108 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:02:49,847 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:49,967 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:02:50,699 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:51,442 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:52,183 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:52,293 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:02:53,035 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:54,406 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:02:55,149 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:55,267 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:02:56,015 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:57,380 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:02:58,121 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:58,244 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:02:58,981 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:02:59,730 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:00,464 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:00,575 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:03:01,318 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:02,096 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:02,852 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:02,973 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:03:03,725 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:04,489 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:05,243 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:05,362 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:03:06,111 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:07,504 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:03:08,249 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:08,368 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:03:09,120 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:10,494 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:03:11,243 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:11,361 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:03:12,126 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:12,880 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:13,625 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:13,737 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:03:14,482 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:15,268 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:16,023 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:16,142 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:03:16,896 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:17,686 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:18,445 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:18,582 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:03:19,342 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:20,088 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:20,842 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:20,958 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:03:21,714 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:23,094 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1263 DAG size of output: 1256 [2019-10-07 14:03:23,846 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:23,967 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:03:24,721 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:26,100 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:03:26,856 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:26,973 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:03:27,729 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:29,082 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:03:29,829 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:29,946 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:03:30,695 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:31,448 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:32,208 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:32,323 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:03:33,072 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:34,753 WARN L191 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:03:35,502 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:03:35,619 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:03:36,378 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:37,147 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:37,906 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:38,031 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:03:38,782 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:40,136 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:03:40,884 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:03:40,998 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:03:41,754 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:43,029 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:03:43,791 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:03:43,910 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:03:44,662 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:46,015 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1260 DAG size of output: 1256 [2019-10-07 14:03:46,763 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:46,881 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:03:47,640 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:03:49,024 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1260 DAG size of output: 1256 [2019-10-07 14:03:49,772 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:49,888 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:03:50,633 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:03:51,993 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1260 DAG size of output: 1256 [2019-10-07 14:03:52,735 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:03:52,869 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:03:53,616 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:03:54,983 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:03:55,722 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:55,851 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:03:56,604 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:58,106 WARN L191 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:03:58,861 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:03:58,993 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:03:59,733 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:04:00,474 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:04:01,211 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:04:01,321 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:04:02,062 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:04:03,435 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:04:04,173 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:04:04,289 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:04:05,029 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:04:05,781 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:04:06,528 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:04:06,645 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:04:07,401 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:04:08,796 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:04:09,559 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:04:09,669 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:04:10,429 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:04:11,778 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1263 DAG size of output: 1256 [2019-10-07 14:04:12,525 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:04:12,663 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:04:13,416 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:04:14,771 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1265 DAG size of output: 1258 [2019-10-07 14:04:15,515 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:04:15,697 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:04:16,463 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:04:18,006 WARN L191 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:04:18,748 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:04:18,864 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:04:19,601 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:04:20,958 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:04:21,704 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:04:21,819 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:04:22,566 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:04:22,573 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1114 for LOIs [2019-10-07 14:04:23,057 WARN L191 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 1114 [2019-10-07 14:04:23,543 WARN L191 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 1114 [2019-10-07 14:04:23,661 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:04:24,409 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:04:24,420 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1068 for LOIs [2019-10-07 14:04:24,823 WARN L191 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:04:25,231 WARN L191 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:04:25,343 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:04:26,084 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:04:26,335 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:04:26,336 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 14:04:26,343 INFO L168 Benchmark]: Toolchain (without parser) took 387429.91 ms. Allocated memory was 144.2 MB in the beginning and 3.6 GB in the end (delta: 3.4 GB). Free memory was 99.2 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2019-10-07 14:04:26,343 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 144.2 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 14:04:26,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 974.87 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 98.8 MB in the beginning and 140.4 MB in the end (delta: -41.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2019-10-07 14:04:26,344 INFO L168 Benchmark]: Boogie Preprocessor took 209.29 ms. Allocated memory is still 201.9 MB. Free memory was 140.4 MB in the beginning and 130.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-07 14:04:26,344 INFO L168 Benchmark]: RCFGBuilder took 5160.92 ms. Allocated memory was 201.9 MB in the beginning and 312.5 MB in the end (delta: 110.6 MB). Free memory was 130.8 MB in the beginning and 254.0 MB in the end (delta: -123.2 MB). Peak memory consumption was 173.1 MB. Max. memory is 7.1 GB. [2019-10-07 14:04:26,344 INFO L168 Benchmark]: TraceAbstraction took 381080.52 ms. Allocated memory was 312.5 MB in the beginning and 3.6 GB in the end (delta: 3.2 GB). Free memory was 254.0 MB in the beginning and 2.1 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2019-10-07 14:04:26,348 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 144.2 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 974.87 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 98.8 MB in the beginning and 140.4 MB in the end (delta: -41.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 209.29 ms. Allocated memory is still 201.9 MB. Free memory was 140.4 MB in the beginning and 130.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5160.92 ms. Allocated memory was 201.9 MB in the beginning and 312.5 MB in the end (delta: 110.6 MB). Free memory was 130.8 MB in the beginning and 254.0 MB in the end (delta: -123.2 MB). Peak memory consumption was 173.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 381080.52 ms. Allocated memory was 312.5 MB in the beginning and 3.6 GB in the end (delta: 3.2 GB). Free memory was 254.0 MB in the beginning and 2.1 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...