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_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:04,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:04,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:04,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:04,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:04,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:04,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:04,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:04,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:04,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:04,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:04,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:04,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:04,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:04,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:04,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:04,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:04,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:04,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:04,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:04,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:04,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:04,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:04,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:04,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:04,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:04,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:04,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:04,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:04,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:04,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:04,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:04,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:04,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:04,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:04,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:04,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:04,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:04,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:04,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:04,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:04,963 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 23:04:04,978 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:04,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:04,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:04,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:04,980 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:04,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:04,980 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:04,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:04,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:04,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:04,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:04,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:04,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:04,982 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:04,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:04,982 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:04,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:04,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:04,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:04,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:04,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:04,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:04,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:04,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:04,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:04,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:04,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:04,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:04,985 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 23:04:05,308 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:05,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:05,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:05,331 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:05,332 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:05,333 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product23.cil.c [2019-10-13 23:04:05,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eccf7a90/a5302163bd5a40e3a7185769bea7a409/FLAG5a6dfc879 [2019-10-13 23:04:06,120 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:06,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product23.cil.c [2019-10-13 23:04:06,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eccf7a90/a5302163bd5a40e3a7185769bea7a409/FLAG5a6dfc879 [2019-10-13 23:04:06,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eccf7a90/a5302163bd5a40e3a7185769bea7a409 [2019-10-13 23:04:06,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:06,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:06,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:06,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:06,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:06,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:06" (1/1) ... [2019-10-13 23:04:06,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee9cbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:06, skipping insertion in model container [2019-10-13 23:04:06,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:06" (1/1) ... [2019-10-13 23:04:06,360 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:06,447 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:07,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:07,198 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:07,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:07,468 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:07,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:07 WrapperNode [2019-10-13 23:04:07,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:07,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:07,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:07,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:07,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:07" (1/1) ... [2019-10-13 23:04:07,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:07" (1/1) ... [2019-10-13 23:04:07,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:07" (1/1) ... [2019-10-13 23:04:07,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:07" (1/1) ... [2019-10-13 23:04:07,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:07" (1/1) ... [2019-10-13 23:04:07,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:07" (1/1) ... [2019-10-13 23:04:07,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:07" (1/1) ... [2019-10-13 23:04:07,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:07,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:07,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:07,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:07,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:07" (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 23:04:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:07,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:07,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:07,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:07,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:07,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:07,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:07,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:07,750 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:07,752 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:07,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:07,752 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:07,752 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:07,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:07,756 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:07,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:07,760 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:07,760 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:07,761 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:07,761 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:07,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:07,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:07,769 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:07,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:07,769 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:07,770 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:04:07,770 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:07,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:07,770 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:07,770 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:07,770 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:04:07,771 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:07,772 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:07,772 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:07,772 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:07,773 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:07,773 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:07,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:04:07,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:04:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:07,777 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:07,778 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:07,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:07,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:07,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:07,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:07,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:07,783 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:07,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:07,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:07,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:07,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:07,788 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:07,788 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:07,788 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:07,788 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:07,788 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:07,789 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:07,789 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:07,789 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:04:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:04:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:04:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:04:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:12,774 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:12,775 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:12,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:12 BoogieIcfgContainer [2019-10-13 23:04:12,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:12,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:12,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:12,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:12,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:06" (1/3) ... [2019-10-13 23:04:12,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1978a3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:12, skipping insertion in model container [2019-10-13 23:04:12,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:07" (2/3) ... [2019-10-13 23:04:12,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1978a3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:12, skipping insertion in model container [2019-10-13 23:04:12,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:12" (3/3) ... [2019-10-13 23:04:12,790 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product23.cil.c [2019-10-13 23:04:12,801 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:12,812 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:12,824 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:12,878 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:12,878 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:12,878 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:12,878 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:12,879 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:12,879 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:12,879 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:12,879 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:12,928 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states. [2019-10-13 23:04:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:04:12,968 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:12,970 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 23:04:12,972 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:12,979 INFO L82 PathProgramCache]: Analyzing trace with hash -116246569, now seen corresponding path program 1 times [2019-10-13 23:04:12,988 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:12,989 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026946566] [2019-10-13 23:04:12,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:12,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:12,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:13,655 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 23:04:13,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026946566] [2019-10-13 23:04:13,657 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:13,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:04:13,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170241477] [2019-10-13 23:04:13,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:04:13,663 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:13,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:04:13,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:04:13,680 INFO L87 Difference]: Start difference. First operand 594 states. Second operand 2 states. [2019-10-13 23:04:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:13,755 INFO L93 Difference]: Finished difference Result 497 states and 735 transitions. [2019-10-13 23:04:13,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:04:13,757 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-13 23:04:13,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:13,783 INFO L225 Difference]: With dead ends: 497 [2019-10-13 23:04:13,784 INFO L226 Difference]: Without dead ends: 463 [2019-10-13 23:04:13,788 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 23:04:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2019-10-13 23:04:13,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2019-10-13 23:04:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-10-13 23:04:13,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 684 transitions. [2019-10-13 23:04:13,905 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 684 transitions. Word has length 112 [2019-10-13 23:04:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:13,907 INFO L462 AbstractCegarLoop]: Abstraction has 463 states and 684 transitions. [2019-10-13 23:04:13,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:04:13,908 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 684 transitions. [2019-10-13 23:04:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 23:04:13,915 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:13,915 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 23:04:13,915 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:13,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:13,916 INFO L82 PathProgramCache]: Analyzing trace with hash -207245627, now seen corresponding path program 1 times [2019-10-13 23:04:13,916 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:13,916 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017468562] [2019-10-13 23:04:13,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:13,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:13,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:14,385 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 23:04:14,385 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017468562] [2019-10-13 23:04:14,386 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:14,386 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:14,386 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220463195] [2019-10-13 23:04:14,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:14,388 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:14,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:14,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:14,390 INFO L87 Difference]: Start difference. First operand 463 states and 684 transitions. Second operand 7 states. [2019-10-13 23:04:18,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:18,442 INFO L93 Difference]: Finished difference Result 1316 states and 1989 transitions. [2019-10-13 23:04:18,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:04:18,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 23:04:18,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:18,453 INFO L225 Difference]: With dead ends: 1316 [2019-10-13 23:04:18,453 INFO L226 Difference]: Without dead ends: 895 [2019-10-13 23:04:18,461 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:04:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2019-10-13 23:04:18,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 870. [2019-10-13 23:04:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2019-10-13 23:04:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1311 transitions. [2019-10-13 23:04:18,553 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1311 transitions. Word has length 113 [2019-10-13 23:04:18,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:18,554 INFO L462 AbstractCegarLoop]: Abstraction has 870 states and 1311 transitions. [2019-10-13 23:04:18,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:18,554 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1311 transitions. [2019-10-13 23:04:18,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:04:18,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:18,559 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 23:04:18,559 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:18,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:18,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2005734008, now seen corresponding path program 1 times [2019-10-13 23:04:18,564 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:18,564 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600339470] [2019-10-13 23:04:18,564 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:18,564 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:18,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:18,783 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 23:04:18,783 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600339470] [2019-10-13 23:04:18,784 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:18,784 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:18,784 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808688555] [2019-10-13 23:04:18,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:18,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:18,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:18,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:18,786 INFO L87 Difference]: Start difference. First operand 870 states and 1311 transitions. Second operand 4 states. [2019-10-13 23:04:20,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:20,491 INFO L93 Difference]: Finished difference Result 2594 states and 4006 transitions. [2019-10-13 23:04:20,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:20,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-13 23:04:20,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:20,507 INFO L225 Difference]: With dead ends: 2594 [2019-10-13 23:04:20,507 INFO L226 Difference]: Without dead ends: 1766 [2019-10-13 23:04:20,512 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 23:04:20,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2019-10-13 23:04:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1668. [2019-10-13 23:04:20,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1668 states. [2019-10-13 23:04:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2561 transitions. [2019-10-13 23:04:20,623 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2561 transitions. Word has length 117 [2019-10-13 23:04:20,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:20,624 INFO L462 AbstractCegarLoop]: Abstraction has 1668 states and 2561 transitions. [2019-10-13 23:04:20,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2561 transitions. [2019-10-13 23:04:20,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:04:20,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:20,629 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 23:04:20,629 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:20,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:20,630 INFO L82 PathProgramCache]: Analyzing trace with hash -2049808782, now seen corresponding path program 1 times [2019-10-13 23:04:20,630 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:20,630 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526604409] [2019-10-13 23:04:20,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:20,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:20,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:20,786 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 23:04:20,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526604409] [2019-10-13 23:04:20,786 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:20,787 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:20,787 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772830216] [2019-10-13 23:04:20,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:20,788 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:20,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:20,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:20,788 INFO L87 Difference]: Start difference. First operand 1668 states and 2561 transitions. Second operand 4 states. [2019-10-13 23:04:22,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:22,928 INFO L93 Difference]: Finished difference Result 4935 states and 7738 transitions. [2019-10-13 23:04:22,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:22,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 23:04:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:22,976 INFO L225 Difference]: With dead ends: 4935 [2019-10-13 23:04:22,976 INFO L226 Difference]: Without dead ends: 3310 [2019-10-13 23:04:22,992 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 23:04:22,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2019-10-13 23:04:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 3189. [2019-10-13 23:04:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3189 states. [2019-10-13 23:04:23,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3189 states to 3189 states and 4962 transitions. [2019-10-13 23:04:23,396 INFO L78 Accepts]: Start accepts. Automaton has 3189 states and 4962 transitions. Word has length 118 [2019-10-13 23:04:23,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:23,397 INFO L462 AbstractCegarLoop]: Abstraction has 3189 states and 4962 transitions. [2019-10-13 23:04:23,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:23,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3189 states and 4962 transitions. [2019-10-13 23:04:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:04:23,401 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:23,401 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 23:04:23,401 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:23,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:23,402 INFO L82 PathProgramCache]: Analyzing trace with hash 878844426, now seen corresponding path program 1 times [2019-10-13 23:04:23,402 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:23,402 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754378744] [2019-10-13 23:04:23,402 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:23,403 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:23,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:23,564 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 23:04:23,565 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754378744] [2019-10-13 23:04:23,565 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:23,565 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:23,565 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594279301] [2019-10-13 23:04:23,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:23,566 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:23,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:23,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:23,567 INFO L87 Difference]: Start difference. First operand 3189 states and 4962 transitions. Second operand 4 states. [2019-10-13 23:04:25,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:25,511 INFO L93 Difference]: Finished difference Result 9550 states and 15278 transitions. [2019-10-13 23:04:25,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:25,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-13 23:04:25,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:25,565 INFO L225 Difference]: With dead ends: 9550 [2019-10-13 23:04:25,565 INFO L226 Difference]: Without dead ends: 6406 [2019-10-13 23:04:25,585 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 23:04:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6406 states. [2019-10-13 23:04:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6406 to 6240. [2019-10-13 23:04:25,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2019-10-13 23:04:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 9880 transitions. [2019-10-13 23:04:25,963 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 9880 transitions. Word has length 119 [2019-10-13 23:04:25,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:25,964 INFO L462 AbstractCegarLoop]: Abstraction has 6240 states and 9880 transitions. [2019-10-13 23:04:25,964 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 9880 transitions. [2019-10-13 23:04:25,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:04:25,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:25,969 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 23:04:25,970 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:25,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1472784564, now seen corresponding path program 1 times [2019-10-13 23:04:25,972 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:25,972 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120486427] [2019-10-13 23:04:25,973 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:25,973 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:25,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:26,153 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 23:04:26,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120486427] [2019-10-13 23:04:26,155 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:26,155 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:26,155 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584020636] [2019-10-13 23:04:26,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:26,156 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:26,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:26,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:26,157 INFO L87 Difference]: Start difference. First operand 6240 states and 9880 transitions. Second operand 4 states. [2019-10-13 23:04:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:28,319 INFO L93 Difference]: Finished difference Result 18805 states and 31089 transitions. [2019-10-13 23:04:28,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:28,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 23:04:28,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:28,427 INFO L225 Difference]: With dead ends: 18805 [2019-10-13 23:04:28,427 INFO L226 Difference]: Without dead ends: 12614 [2019-10-13 23:04:28,466 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 23:04:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12614 states. [2019-10-13 23:04:29,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12614 to 12359. [2019-10-13 23:04:29,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12359 states. [2019-10-13 23:04:29,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12359 states to 12359 states and 20126 transitions. [2019-10-13 23:04:29,385 INFO L78 Accepts]: Start accepts. Automaton has 12359 states and 20126 transitions. Word has length 120 [2019-10-13 23:04:29,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:29,385 INFO L462 AbstractCegarLoop]: Abstraction has 12359 states and 20126 transitions. [2019-10-13 23:04:29,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:29,385 INFO L276 IsEmpty]: Start isEmpty. Operand 12359 states and 20126 transitions. [2019-10-13 23:04:29,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:04:29,389 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:29,389 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 23:04:29,389 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:29,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:29,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1589903732, now seen corresponding path program 1 times [2019-10-13 23:04:29,390 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:29,390 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826426290] [2019-10-13 23:04:29,390 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:29,391 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:29,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:29,546 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 23:04:29,547 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826426290] [2019-10-13 23:04:29,547 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:29,547 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:29,547 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943686665] [2019-10-13 23:04:29,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:29,548 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:29,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:29,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:29,549 INFO L87 Difference]: Start difference. First operand 12359 states and 20126 transitions. Second operand 4 states. [2019-10-13 23:04:32,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:32,492 INFO L93 Difference]: Finished difference Result 37392 states and 65353 transitions. [2019-10-13 23:04:32,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:32,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-13 23:04:32,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:32,718 INFO L225 Difference]: With dead ends: 37392 [2019-10-13 23:04:32,718 INFO L226 Difference]: Without dead ends: 25078 [2019-10-13 23:04:32,802 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 23:04:32,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25078 states. [2019-10-13 23:04:35,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25078 to 24496. [2019-10-13 23:04:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24496 states. [2019-10-13 23:04:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24496 states to 24496 states and 41521 transitions. [2019-10-13 23:04:35,215 INFO L78 Accepts]: Start accepts. Automaton has 24496 states and 41521 transitions. Word has length 121 [2019-10-13 23:04:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:35,220 INFO L462 AbstractCegarLoop]: Abstraction has 24496 states and 41521 transitions. [2019-10-13 23:04:35,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:35,220 INFO L276 IsEmpty]: Start isEmpty. Operand 24496 states and 41521 transitions. [2019-10-13 23:04:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-13 23:04:35,244 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:35,244 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-13 23:04:35,245 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:35,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:35,246 INFO L82 PathProgramCache]: Analyzing trace with hash -856043766, now seen corresponding path program 1 times [2019-10-13 23:04:35,248 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:35,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968624712] [2019-10-13 23:04:35,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:35,249 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:35,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 23:04:35,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968624712] [2019-10-13 23:04:35,900 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:35,900 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:04:35,900 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27486270] [2019-10-13 23:04:35,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:04:35,903 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:35,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:04:35,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:35,904 INFO L87 Difference]: Start difference. First operand 24496 states and 41521 transitions. Second operand 5 states.