/usr/bin/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_spec14_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:08:06,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:08:06,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:08:06,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:08:06,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:08:06,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:08:06,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:08:06,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:08:06,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:08:06,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:08:06,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:08:06,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:08:06,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:08:06,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:08:06,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:08:06,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:08:06,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:08:06,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:08:06,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:08:06,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:08:06,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:08:06,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:08:06,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:08:06,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:08:06,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:08:06,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:08:06,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:08:06,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:08:06,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:08:06,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:08:06,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:08:06,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:08:06,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:08:06,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:08:06,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:08:07,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:08:07,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:08:07,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:08:07,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:08:07,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:08:07,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:08:07,003 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 [2019-11-07 04:08:07,022 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:08:07,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:08:07,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:08:07,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:08:07,025 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:08:07,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:08:07,026 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:08:07,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:08:07,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:08:07,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:08:07,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:08:07,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:08:07,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:08:07,028 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:08:07,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:08:07,028 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:08:07,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:08:07,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:08:07,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:08:07,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:08:07,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:08:07,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:08:07,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:08:07,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:08:07,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:08:07,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:08:07,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:08:07,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:08:07,031 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 [2019-11-07 04:08:07,335 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:08:07,350 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:08:07,353 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:08:07,355 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:08:07,356 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:08:07,356 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_productSimulator.cil.c [2019-11-07 04:08:07,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/036503483/5f0c77ebfa3b42e8b7244dd161509b70/FLAGbfa8d304c [2019-11-07 04:08:08,017 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:08:08,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_productSimulator.cil.c [2019-11-07 04:08:08,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/036503483/5f0c77ebfa3b42e8b7244dd161509b70/FLAGbfa8d304c [2019-11-07 04:08:08,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/036503483/5f0c77ebfa3b42e8b7244dd161509b70 [2019-11-07 04:08:08,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:08:08,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:08:08,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:08:08,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:08:08,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:08:08,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:08" (1/1) ... [2019-11-07 04:08:08,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dfebce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:08, skipping insertion in model container [2019-11-07 04:08:08,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:08" (1/1) ... [2019-11-07 04:08:08,261 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:08:08,363 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:08:09,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:08:09,181 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:08:09,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:08:09,404 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:08:09,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:09 WrapperNode [2019-11-07 04:08:09,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:08:09,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:08:09,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:08:09,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:08:09,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:09" (1/1) ... [2019-11-07 04:08:09,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:09" (1/1) ... [2019-11-07 04:08:09,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:09" (1/1) ... [2019-11-07 04:08:09,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:09" (1/1) ... [2019-11-07 04:08:09,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:09" (1/1) ... [2019-11-07 04:08:09,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:09" (1/1) ... [2019-11-07 04:08:09,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:09" (1/1) ... [2019-11-07 04:08:09,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:08:09,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:08:09,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:08:09,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:08:09,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:09" (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 [2019-11-07 04:08:09,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:08:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:08:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:08:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-11-07 04:08:09,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:08:09,690 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:08:09,690 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:08:09,690 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:08:09,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:08:09,691 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:08:09,691 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:08:09,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:08:09,692 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:08:09,692 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:08:09,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:08:09,693 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:08:09,694 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:08:09,695 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:08:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:08:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:08:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:08:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:08:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:08:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:08:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:08:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:08:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:08:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:08:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:08:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:08:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:08:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:08:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:08:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:08:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:08:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:08:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:08:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:08:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:08:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:08:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:08:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-11-07 04:08:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-11-07 04:08:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:08:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-11-07 04:08:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-11-07 04:08:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:08:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-11-07 04:08:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-11-07 04:08:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-11-07 04:08:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-11-07 04:08:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:08:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:08:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:08:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:08:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:08:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:08:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:08:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:08:09,703 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:08:09,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:08:09,703 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-11-07 04:08:09,703 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-11-07 04:08:09,704 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-11-07 04:08:09,704 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-11-07 04:08:09,704 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:08:09,704 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:08:09,704 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:08:09,704 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-11-07 04:08:09,704 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-11-07 04:08:09,704 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-11-07 04:08:09,705 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-11-07 04:08:09,705 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:08:09,705 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:08:09,706 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:08:09,706 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-11-07 04:08:09,706 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-11-07 04:08:09,707 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:08:09,707 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-11-07 04:08:09,707 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-11-07 04:08:09,707 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:08:09,708 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:08:09,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:08:09,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:08:09,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:08:09,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:08:09,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:08:09,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:08:09,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:08:09,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:08:09,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:08:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:08:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:08:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:08:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:08:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:08:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:08:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:08:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-11-07 04:08:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:08:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:08:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:08:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:08:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:08:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:08:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:08:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:08:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:08:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:08:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:08:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:08:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:08:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:08:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:08:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:08:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:08:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:08:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:08:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:08:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:08:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:08:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:08:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:08:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:08:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:08:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:08:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:08:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:08:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:08:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:08:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:08:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:08:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:08:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:08:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:08:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:08:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:08:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:08:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:08:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:08:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:08:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:08:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:08:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:08:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:08:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:08:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-11-07 04:08:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-11-07 04:08:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-11-07 04:08:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-11-07 04:08:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-11-07 04:08:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-11-07 04:08:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-11-07 04:08:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-11-07 04:08:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:08:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:08:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:08:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:08:09,736 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:08:09,736 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-11-07 04:08:09,736 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-11-07 04:08:09,736 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-11-07 04:08:09,736 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-11-07 04:08:09,736 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:08:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:08:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-11-07 04:08:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-11-07 04:08:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-11-07 04:08:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-11-07 04:08:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:08:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:08:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:08:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-11-07 04:08:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-11-07 04:08:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-11-07 04:08:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:08:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-11-07 04:08:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:08:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:08:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:08:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:08:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:08:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:08:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:08:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:08:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:08:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:08:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:08:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:08:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:08:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:08:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:08:09,741 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:08:09,741 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:08:09,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:08:09,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:08:09,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:08:15,057 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:08:15,058 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:08:15,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:08:15 BoogieIcfgContainer [2019-11-07 04:08:15,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:08:15,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:08:15,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:08:15,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:08:15,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:08:08" (1/3) ... [2019-11-07 04:08:15,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281a4f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:08:15, skipping insertion in model container [2019-11-07 04:08:15,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:09" (2/3) ... [2019-11-07 04:08:15,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281a4f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:08:15, skipping insertion in model container [2019-11-07 04:08:15,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:08:15" (3/3) ... [2019-11-07 04:08:15,071 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_productSimulator.cil.c [2019-11-07 04:08:15,084 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:08:15,095 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:08:15,111 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:08:15,146 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:08:15,147 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:08:15,147 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:08:15,147 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:08:15,147 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:08:15,147 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:08:15,148 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:08:15,148 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:08:15,194 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states. [2019-11-07 04:08:15,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-07 04:08:15,224 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:15,225 INFO L410 BasicCegarLoop]: trace histogram [5, 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] [2019-11-07 04:08:15,231 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:15,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:15,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1399259546, now seen corresponding path program 1 times [2019-11-07 04:08:15,250 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:15,251 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928984807] [2019-11-07 04:08:15,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 04:08:15,977 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928984807] [2019-11-07 04:08:15,978 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:15,979 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:08:15,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287867411] [2019-11-07 04:08:15,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:08:15,987 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:16,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:08:16,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:08:16,004 INFO L87 Difference]: Start difference. First operand 675 states. Second operand 6 states. [2019-11-07 04:08:16,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:16,242 INFO L93 Difference]: Finished difference Result 1076 states and 1560 transitions. [2019-11-07 04:08:16,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:08:16,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-11-07 04:08:16,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:16,294 INFO L225 Difference]: With dead ends: 1076 [2019-11-07 04:08:16,294 INFO L226 Difference]: Without dead ends: 541 [2019-11-07 04:08:16,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:08:16,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2019-11-07 04:08:16,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2019-11-07 04:08:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2019-11-07 04:08:16,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 774 transitions. [2019-11-07 04:08:16,453 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 774 transitions. Word has length 98 [2019-11-07 04:08:16,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:16,455 INFO L462 AbstractCegarLoop]: Abstraction has 541 states and 774 transitions. [2019-11-07 04:08:16,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:08:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 774 transitions. [2019-11-07 04:08:16,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-07 04:08:16,461 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:16,462 INFO L410 BasicCegarLoop]: trace histogram [5, 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] [2019-11-07 04:08:16,462 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:16,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:16,462 INFO L82 PathProgramCache]: Analyzing trace with hash 328067681, now seen corresponding path program 1 times [2019-11-07 04:08:16,463 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:16,463 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986611805] [2019-11-07 04:08:16,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 04:08:16,810 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986611805] [2019-11-07 04:08:16,811 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:16,813 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:08:16,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044894896] [2019-11-07 04:08:16,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:08:16,819 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:16,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:08:16,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:08:16,819 INFO L87 Difference]: Start difference. First operand 541 states and 774 transitions. Second operand 3 states. [2019-11-07 04:08:16,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:16,942 INFO L93 Difference]: Finished difference Result 1529 states and 2220 transitions. [2019-11-07 04:08:16,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:08:16,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2019-11-07 04:08:16,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:16,952 INFO L225 Difference]: With dead ends: 1529 [2019-11-07 04:08:16,952 INFO L226 Difference]: Without dead ends: 1035 [2019-11-07 04:08:16,956 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:08:16,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2019-11-07 04:08:17,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1032. [2019-11-07 04:08:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2019-11-07 04:08:17,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1491 transitions. [2019-11-07 04:08:17,024 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1491 transitions. Word has length 99 [2019-11-07 04:08:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:17,025 INFO L462 AbstractCegarLoop]: Abstraction has 1032 states and 1491 transitions. [2019-11-07 04:08:17,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:08:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1491 transitions. [2019-11-07 04:08:17,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-07 04:08:17,028 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:17,029 INFO L410 BasicCegarLoop]: trace histogram [5, 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] [2019-11-07 04:08:17,029 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:17,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:17,030 INFO L82 PathProgramCache]: Analyzing trace with hash 139701888, now seen corresponding path program 1 times [2019-11-07 04:08:17,030 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:17,030 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231071435] [2019-11-07 04:08:17,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:17,332 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 04:08:17,333 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231071435] [2019-11-07 04:08:17,333 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:17,333 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:08:17,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458016981] [2019-11-07 04:08:17,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:08:17,334 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:17,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:08:17,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:08:17,335 INFO L87 Difference]: Start difference. First operand 1032 states and 1491 transitions. Second operand 5 states. [2019-11-07 04:08:20,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:20,963 INFO L93 Difference]: Finished difference Result 3193 states and 4806 transitions. [2019-11-07 04:08:20,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:08:20,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-11-07 04:08:20,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:20,980 INFO L225 Difference]: With dead ends: 3193 [2019-11-07 04:08:20,981 INFO L226 Difference]: Without dead ends: 2230 [2019-11-07 04:08:20,985 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:08:20,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2019-11-07 04:08:21,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2147. [2019-11-07 04:08:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2019-11-07 04:08:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3269 transitions. [2019-11-07 04:08:21,102 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3269 transitions. Word has length 100 [2019-11-07 04:08:21,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:21,103 INFO L462 AbstractCegarLoop]: Abstraction has 2147 states and 3269 transitions. [2019-11-07 04:08:21,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:08:21,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3269 transitions. [2019-11-07 04:08:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-07 04:08:21,111 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:21,112 INFO L410 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:08:21,112 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:21,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:21,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1990728852, now seen corresponding path program 1 times [2019-11-07 04:08:21,112 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:21,113 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543061124] [2019-11-07 04:08:21,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 04:08:21,357 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543061124] [2019-11-07 04:08:21,357 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:21,357 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:08:21,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779073992] [2019-11-07 04:08:21,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:08:21,359 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:21,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:08:21,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:08:21,360 INFO L87 Difference]: Start difference. First operand 2147 states and 3269 transitions. Second operand 9 states. [2019-11-07 04:08:23,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:23,493 INFO L93 Difference]: Finished difference Result 4212 states and 6512 transitions. [2019-11-07 04:08:23,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:08:23,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2019-11-07 04:08:23,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:23,514 INFO L225 Difference]: With dead ends: 4212 [2019-11-07 04:08:23,515 INFO L226 Difference]: Without dead ends: 2133 [2019-11-07 04:08:23,529 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:08:23,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2019-11-07 04:08:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 2133. [2019-11-07 04:08:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2133 states. [2019-11-07 04:08:23,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 3238 transitions. [2019-11-07 04:08:23,659 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 3238 transitions. Word has length 141 [2019-11-07 04:08:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:23,659 INFO L462 AbstractCegarLoop]: Abstraction has 2133 states and 3238 transitions. [2019-11-07 04:08:23,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:08:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 3238 transitions. [2019-11-07 04:08:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 04:08:23,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:23,668 INFO L410 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:08:23,669 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:23,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:23,669 INFO L82 PathProgramCache]: Analyzing trace with hash 651226403, now seen corresponding path program 1 times [2019-11-07 04:08:23,669 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:23,669 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388297032] [2019-11-07 04:08:23,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-11-07 04:08:23,864 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388297032] [2019-11-07 04:08:23,864 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:23,864 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:08:23,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408514114] [2019-11-07 04:08:23,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:08:23,865 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:23,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:08:23,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:08:23,866 INFO L87 Difference]: Start difference. First operand 2133 states and 3238 transitions. Second operand 7 states. [2019-11-07 04:08:28,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:28,577 INFO L93 Difference]: Finished difference Result 6411 states and 9890 transitions. [2019-11-07 04:08:28,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:08:28,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2019-11-07 04:08:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:28,631 INFO L225 Difference]: With dead ends: 6411 [2019-11-07 04:08:28,631 INFO L226 Difference]: Without dead ends: 4350 [2019-11-07 04:08:28,644 INFO L630 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 [2019-11-07 04:08:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2019-11-07 04:08:28,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 4215. [2019-11-07 04:08:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4215 states. [2019-11-07 04:08:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 6462 transitions. [2019-11-07 04:08:28,906 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 6462 transitions. Word has length 149 [2019-11-07 04:08:28,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:28,908 INFO L462 AbstractCegarLoop]: Abstraction has 4215 states and 6462 transitions. [2019-11-07 04:08:28,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:08:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 6462 transitions. [2019-11-07 04:08:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-07 04:08:28,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:28,920 INFO L410 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:08:28,920 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:28,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:28,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1059190089, now seen corresponding path program 1 times [2019-11-07 04:08:28,921 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:28,921 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281917340] [2019-11-07 04:08:28,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-11-07 04:08:29,132 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281917340] [2019-11-07 04:08:29,133 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:29,134 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:08:29,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333568967] [2019-11-07 04:08:29,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:08:29,135 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:29,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:08:29,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:08:29,135 INFO L87 Difference]: Start difference. First operand 4215 states and 6462 transitions. Second operand 3 states. [2019-11-07 04:08:29,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:29,492 INFO L93 Difference]: Finished difference Result 6270 states and 9582 transitions. [2019-11-07 04:08:29,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:08:29,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2019-11-07 04:08:29,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:29,520 INFO L225 Difference]: With dead ends: 6270 [2019-11-07 04:08:29,520 INFO L226 Difference]: Without dead ends: 4218 [2019-11-07 04:08:29,532 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:08:29,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4218 states. [2019-11-07 04:08:29,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4218 to 4215. [2019-11-07 04:08:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4215 states. [2019-11-07 04:08:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 6398 transitions. [2019-11-07 04:08:29,772 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 6398 transitions. Word has length 154 [2019-11-07 04:08:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:29,773 INFO L462 AbstractCegarLoop]: Abstraction has 4215 states and 6398 transitions. [2019-11-07 04:08:29,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:08:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 6398 transitions. [2019-11-07 04:08:29,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-11-07 04:08:29,784 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:29,785 INFO L410 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:08:29,785 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:29,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:29,786 INFO L82 PathProgramCache]: Analyzing trace with hash 497081962, now seen corresponding path program 1 times [2019-11-07 04:08:29,786 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:29,786 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588373356] [2019-11-07 04:08:29,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-11-07 04:08:30,048 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588373356] [2019-11-07 04:08:30,048 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:30,049 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:08:30,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168201103] [2019-11-07 04:08:30,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:08:30,051 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:30,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:08:30,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:08:30,051 INFO L87 Difference]: Start difference. First operand 4215 states and 6398 transitions. Second operand 9 states. [2019-11-07 04:08:32,645 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2019-11-07 04:08:35,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:35,040 INFO L93 Difference]: Finished difference Result 5334 states and 8030 transitions. [2019-11-07 04:08:35,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:08:35,040 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 153 [2019-11-07 04:08:35,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:35,074 INFO L225 Difference]: With dead ends: 5334 [2019-11-07 04:08:35,074 INFO L226 Difference]: Without dead ends: 5331 [2019-11-07 04:08:35,078 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2019-11-07 04:08:35,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5331 states. [2019-11-07 04:08:35,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5331 to 5155. [2019-11-07 04:08:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5155 states. [2019-11-07 04:08:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 7738 transitions. [2019-11-07 04:08:35,500 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 7738 transitions. Word has length 153 [2019-11-07 04:08:35,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:35,501 INFO L462 AbstractCegarLoop]: Abstraction has 5155 states and 7738 transitions. [2019-11-07 04:08:35,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:08:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 7738 transitions. [2019-11-07 04:08:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-11-07 04:08:35,516 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:35,516 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 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] [2019-11-07 04:08:35,516 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:35,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:35,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1972809671, now seen corresponding path program 1 times [2019-11-07 04:08:35,517 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:35,518 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958365535] [2019-11-07 04:08:35,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-11-07 04:08:35,734 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958365535] [2019-11-07 04:08:35,734 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:35,735 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:08:35,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771126452] [2019-11-07 04:08:35,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:08:35,736 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:35,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:08:35,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:08:35,737 INFO L87 Difference]: Start difference. First operand 5155 states and 7738 transitions. Second operand 7 states. [2019-11-07 04:08:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:35,982 INFO L93 Difference]: Finished difference Result 10322 states and 15614 transitions. [2019-11-07 04:08:35,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:08:35,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2019-11-07 04:08:35,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:36,029 INFO L225 Difference]: With dead ends: 10322 [2019-11-07 04:08:36,029 INFO L226 Difference]: Without dead ends: 5239 [2019-11-07 04:08:36,059 INFO L630 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 [2019-11-07 04:08:36,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5239 states. [2019-11-07 04:08:36,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5239 to 5239. [2019-11-07 04:08:36,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5239 states. [2019-11-07 04:08:36,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 7822 transitions. [2019-11-07 04:08:36,462 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 7822 transitions. Word has length 183 [2019-11-07 04:08:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:36,463 INFO L462 AbstractCegarLoop]: Abstraction has 5239 states and 7822 transitions. [2019-11-07 04:08:36,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:08:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 7822 transitions. [2019-11-07 04:08:36,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-11-07 04:08:36,485 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:36,485 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:08:36,486 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:36,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:36,486 INFO L82 PathProgramCache]: Analyzing trace with hash -807701877, now seen corresponding path program 1 times [2019-11-07 04:08:36,487 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:36,487 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899082117] [2019-11-07 04:08:36,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-11-07 04:08:36,872 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899082117] [2019-11-07 04:08:36,872 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319996129] [2019-11-07 04:08:36,873 INFO L94 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 [2019-11-07 04:08:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:37,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 3388 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-07 04:08:37,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:08:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-11-07 04:08:38,216 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:08:38,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:08:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-11-07 04:08:38,990 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:08:38,990 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 9] total 24 [2019-11-07 04:08:38,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519981439] [2019-11-07 04:08:38,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:08:38,992 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:38,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:08:38,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2019-11-07 04:08:38,993 INFO L87 Difference]: Start difference. First operand 5239 states and 7822 transitions. Second operand 10 states.