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_spec2_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:16,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:16,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:16,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:16,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:16,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:16,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:16,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:16,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:16,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:16,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:16,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:16,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:16,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:16,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:16,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:16,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:16,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:16,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:16,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:16,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:16,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:16,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:16,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:16,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:16,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:16,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:16,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:16,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:16,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:16,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:16,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:16,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:16,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:16,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:16,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:16,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:16,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:16,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:16,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:16,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:16,155 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 [2019-10-13 23:04:16,181 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:16,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:16,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:16,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:16,188 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:16,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:16,188 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:16,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:16,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:16,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:16,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:16,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:16,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:16,189 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:16,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:16,190 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:16,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:16,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:16,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:16,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:16,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:16,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:16,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:16,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:16,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:16,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:16,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:16,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:16,192 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 [2019-10-13 23:04:16,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:16,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:16,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:16,522 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:16,522 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:16,523 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product31.cil.c [2019-10-13 23:04:16,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/057cdb0dd/ab7a2ddca97048b4b10f8046a32e95dd/FLAG7bf75936f [2019-10-13 23:04:17,244 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:17,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product31.cil.c [2019-10-13 23:04:17,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/057cdb0dd/ab7a2ddca97048b4b10f8046a32e95dd/FLAG7bf75936f [2019-10-13 23:04:17,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/057cdb0dd/ab7a2ddca97048b4b10f8046a32e95dd [2019-10-13 23:04:17,433 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:17,435 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:17,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:17,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:17,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:17,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:17" (1/1) ... [2019-10-13 23:04:17,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f7640f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:17, skipping insertion in model container [2019-10-13 23:04:17,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:17" (1/1) ... [2019-10-13 23:04:17,449 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:17,528 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:18,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:18,377 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:18,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:18,590 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:18,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18 WrapperNode [2019-10-13 23:04:18,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:18,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:18,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:18,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:18,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (1/1) ... [2019-10-13 23:04:18,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:18,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:18,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:18,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:18,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (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 [2019-10-13 23:04:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:18,897 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:18,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:18,898 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:18,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:18,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:18,906 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:18,906 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:18,906 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:18,907 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:18,907 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:18,907 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:18,907 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:18,907 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:18,908 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:18,908 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:18,908 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:18,908 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:18,909 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:18,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:18,909 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:18,909 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:18,909 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:18,911 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:18,911 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:18,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:18,911 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:18,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:18,912 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:18,912 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:04:18,912 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:18,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:18,912 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:18,913 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:18,913 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:04:18,914 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:18,914 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:18,914 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:18,914 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:18,914 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:18,915 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:18,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:04:18,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:04:18,915 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:18,915 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:18,916 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:18,916 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:18,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:18,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:18,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:18,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:18,919 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:18,922 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:18,922 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:18,922 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:18,922 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:18,922 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:18,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:18,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:18,924 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:18,924 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:18,924 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:18,924 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:18,925 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:18,925 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:18,925 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:18,925 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:18,925 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:18,926 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:18,926 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:18,926 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:18,926 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:18,926 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:18,926 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:18,927 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:18,927 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:18,927 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:18,931 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:18,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:18,931 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:18,932 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:18,932 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:18,936 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:18,936 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:18,936 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:04:18,936 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:04:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:04:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:04:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:24,183 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:24,183 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:24,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:24 BoogieIcfgContainer [2019-10-13 23:04:24,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:24,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:24,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:24,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:24,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:17" (1/3) ... [2019-10-13 23:04:24,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c1ace7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:24, skipping insertion in model container [2019-10-13 23:04:24,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:18" (2/3) ... [2019-10-13 23:04:24,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c1ace7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:24, skipping insertion in model container [2019-10-13 23:04:24,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:24" (3/3) ... [2019-10-13 23:04:24,194 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product31.cil.c [2019-10-13 23:04:24,205 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:24,214 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:24,226 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:24,257 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:24,257 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:24,257 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:24,257 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:24,257 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:24,257 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:24,257 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:24,258 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:24,291 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states. [2019-10-13 23:04:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:04:24,316 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:24,317 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:24,319 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:24,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:24,326 INFO L82 PathProgramCache]: Analyzing trace with hash -93894055, now seen corresponding path program 1 times [2019-10-13 23:04:24,335 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:24,336 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227977773] [2019-10-13 23:04:24,336 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:24,336 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:24,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:24,946 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227977773] [2019-10-13 23:04:24,947 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:24,948 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:04:24,948 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320314458] [2019-10-13 23:04:24,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:04:24,956 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:24,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:04:24,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:04:24,974 INFO L87 Difference]: Start difference. First operand 601 states. Second operand 2 states. [2019-10-13 23:04:25,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:25,069 INFO L93 Difference]: Finished difference Result 504 states and 742 transitions. [2019-10-13 23:04:25,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:04:25,071 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-13 23:04:25,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:25,101 INFO L225 Difference]: With dead ends: 504 [2019-10-13 23:04:25,101 INFO L226 Difference]: Without dead ends: 470 [2019-10-13 23:04:25,109 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:04:25,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-10-13 23:04:25,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2019-10-13 23:04:25,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2019-10-13 23:04:25,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 691 transitions. [2019-10-13 23:04:25,223 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 691 transitions. Word has length 112 [2019-10-13 23:04:25,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:25,226 INFO L462 AbstractCegarLoop]: Abstraction has 470 states and 691 transitions. [2019-10-13 23:04:25,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:04:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 691 transitions. [2019-10-13 23:04:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 23:04:25,237 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:25,237 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:25,237 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:25,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:25,238 INFO L82 PathProgramCache]: Analyzing trace with hash -696682179, now seen corresponding path program 1 times [2019-10-13 23:04:25,238 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:25,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200877542] [2019-10-13 23:04:25,238 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:25,239 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:25,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:25,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200877542] [2019-10-13 23:04:25,515 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:25,516 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:25,516 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830728665] [2019-10-13 23:04:25,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:25,520 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:25,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:25,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:25,525 INFO L87 Difference]: Start difference. First operand 470 states and 691 transitions. Second operand 7 states. [2019-10-13 23:04:29,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:29,750 INFO L93 Difference]: Finished difference Result 1337 states and 2010 transitions. [2019-10-13 23:04:29,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:04:29,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 23:04:29,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:29,761 INFO L225 Difference]: With dead ends: 1337 [2019-10-13 23:04:29,761 INFO L226 Difference]: Without dead ends: 909 [2019-10-13 23:04:29,767 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:04:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2019-10-13 23:04:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 884. [2019-10-13 23:04:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2019-10-13 23:04:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1325 transitions. [2019-10-13 23:04:29,868 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1325 transitions. Word has length 113 [2019-10-13 23:04:29,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:29,869 INFO L462 AbstractCegarLoop]: Abstraction has 884 states and 1325 transitions. [2019-10-13 23:04:29,869 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:29,869 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1325 transitions. [2019-10-13 23:04:29,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:04:29,876 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:29,876 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:29,876 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:29,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:29,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1598354599, now seen corresponding path program 1 times [2019-10-13 23:04:29,877 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:29,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71014467] [2019-10-13 23:04:29,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:29,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:29,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:30,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71014467] [2019-10-13 23:04:30,112 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:30,113 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:30,113 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091828772] [2019-10-13 23:04:30,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:30,117 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:30,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:30,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:30,117 INFO L87 Difference]: Start difference. First operand 884 states and 1325 transitions. Second operand 4 states. [2019-10-13 23:04:32,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:32,047 INFO L93 Difference]: Finished difference Result 2636 states and 4048 transitions. [2019-10-13 23:04:32,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:32,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-13 23:04:32,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:32,067 INFO L225 Difference]: With dead ends: 2636 [2019-10-13 23:04:32,068 INFO L226 Difference]: Without dead ends: 1794 [2019-10-13 23:04:32,076 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2019-10-13 23:04:32,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1696. [2019-10-13 23:04:32,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1696 states. [2019-10-13 23:04:32,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2589 transitions. [2019-10-13 23:04:32,274 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2589 transitions. Word has length 117 [2019-10-13 23:04:32,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:32,275 INFO L462 AbstractCegarLoop]: Abstraction has 1696 states and 2589 transitions. [2019-10-13 23:04:32,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:32,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2589 transitions. [2019-10-13 23:04:32,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:04:32,289 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:32,290 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:32,290 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:32,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:32,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1991943500, now seen corresponding path program 1 times [2019-10-13 23:04:32,292 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:32,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652901247] [2019-10-13 23:04:32,292 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:32,293 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:32,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:32,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652901247] [2019-10-13 23:04:32,622 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:32,622 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:32,623 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432437618] [2019-10-13 23:04:32,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:32,624 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:32,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:32,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:32,625 INFO L87 Difference]: Start difference. First operand 1696 states and 2589 transitions. Second operand 4 states. [2019-10-13 23:04:34,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:34,926 INFO L93 Difference]: Finished difference Result 5019 states and 7822 transitions. [2019-10-13 23:04:34,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:34,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 23:04:34,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:34,963 INFO L225 Difference]: With dead ends: 5019 [2019-10-13 23:04:34,964 INFO L226 Difference]: Without dead ends: 3366 [2019-10-13 23:04:34,979 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:34,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2019-10-13 23:04:35,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3245. [2019-10-13 23:04:35,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3245 states. [2019-10-13 23:04:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3245 states to 3245 states and 5018 transitions. [2019-10-13 23:04:35,283 INFO L78 Accepts]: Start accepts. Automaton has 3245 states and 5018 transitions. Word has length 118 [2019-10-13 23:04:35,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:35,284 INFO L462 AbstractCegarLoop]: Abstraction has 3245 states and 5018 transitions. [2019-10-13 23:04:35,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3245 states and 5018 transitions. [2019-10-13 23:04:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:04:35,290 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:35,291 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:35,291 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:35,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:35,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1622030967, now seen corresponding path program 1 times [2019-10-13 23:04:35,292 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:35,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993274655] [2019-10-13 23:04:35,293 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:35,293 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:35,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:35,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993274655] [2019-10-13 23:04:35,603 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:35,604 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:35,604 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779881236] [2019-10-13 23:04:35,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:35,605 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:35,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:35,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:35,605 INFO L87 Difference]: Start difference. First operand 3245 states and 5018 transitions. Second operand 4 states. [2019-10-13 23:04:37,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:37,599 INFO L93 Difference]: Finished difference Result 9718 states and 15446 transitions. [2019-10-13 23:04:37,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:37,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-13 23:04:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:37,674 INFO L225 Difference]: With dead ends: 9718 [2019-10-13 23:04:37,674 INFO L226 Difference]: Without dead ends: 6518 [2019-10-13 23:04:37,700 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:37,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6518 states. [2019-10-13 23:04:38,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6518 to 6352. [2019-10-13 23:04:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6352 states. [2019-10-13 23:04:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6352 states to 6352 states and 9992 transitions. [2019-10-13 23:04:38,094 INFO L78 Accepts]: Start accepts. Automaton has 6352 states and 9992 transitions. Word has length 119 [2019-10-13 23:04:38,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:38,097 INFO L462 AbstractCegarLoop]: Abstraction has 6352 states and 9992 transitions. [2019-10-13 23:04:38,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:38,098 INFO L276 IsEmpty]: Start isEmpty. Operand 6352 states and 9992 transitions. [2019-10-13 23:04:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:04:38,101 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:38,102 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:38,104 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:38,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:38,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1255326870, now seen corresponding path program 1 times [2019-10-13 23:04:38,105 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:38,105 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321386197] [2019-10-13 23:04:38,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:38,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:38,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:38,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321386197] [2019-10-13 23:04:38,294 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:38,295 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:38,295 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079345527] [2019-10-13 23:04:38,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:38,296 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:38,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:38,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:38,296 INFO L87 Difference]: Start difference. First operand 6352 states and 9992 transitions. Second operand 4 states. [2019-10-13 23:04:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:40,555 INFO L93 Difference]: Finished difference Result 19141 states and 31425 transitions. [2019-10-13 23:04:40,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:40,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 23:04:40,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:40,678 INFO L225 Difference]: With dead ends: 19141 [2019-10-13 23:04:40,678 INFO L226 Difference]: Without dead ends: 12838 [2019-10-13 23:04:40,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:40,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12838 states. [2019-10-13 23:04:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12838 to 12583. [2019-10-13 23:04:42,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12583 states. [2019-10-13 23:04:42,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12583 states to 12583 states and 20350 transitions. [2019-10-13 23:04:42,200 INFO L78 Accepts]: Start accepts. Automaton has 12583 states and 20350 transitions. Word has length 120 [2019-10-13 23:04:42,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:42,201 INFO L462 AbstractCegarLoop]: Abstraction has 12583 states and 20350 transitions. [2019-10-13 23:04:42,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:42,201 INFO L276 IsEmpty]: Start isEmpty. Operand 12583 states and 20350 transitions. [2019-10-13 23:04:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:04:42,207 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:42,207 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:42,208 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:42,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:42,209 INFO L82 PathProgramCache]: Analyzing trace with hash 259110507, now seen corresponding path program 1 times [2019-10-13 23:04:42,209 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:42,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870569595] [2019-10-13 23:04:42,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:42,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:42,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:42,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870569595] [2019-10-13 23:04:42,367 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:42,368 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:42,368 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039275362] [2019-10-13 23:04:42,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:42,369 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:42,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:42,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:42,369 INFO L87 Difference]: Start difference. First operand 12583 states and 20350 transitions. Second operand 4 states. [2019-10-13 23:04:45,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:45,305 INFO L93 Difference]: Finished difference Result 38064 states and 66025 transitions. [2019-10-13 23:04:45,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:45,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-13 23:04:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:45,576 INFO L225 Difference]: With dead ends: 38064 [2019-10-13 23:04:45,577 INFO L226 Difference]: Without dead ends: 25526 [2019-10-13 23:04:45,694 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:45,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25526 states.