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 0.1.24-13a467a-m [2019-10-15 03:08:26,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:08:26,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:08:26,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:08:26,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:08:26,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:08:26,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:08:26,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:08:26,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:08:26,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:08:26,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:08:26,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:08:26,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:08:26,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:08:26,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:08:26,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:08:26,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:08:26,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:08:26,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:08:26,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:08:26,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:08:26,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:08:26,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:08:26,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:08:26,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:08:26,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:08:26,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:08:26,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:08:26,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:08:26,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:08:26,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:08:26,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:08:26,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:08:26,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:08:26,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:08:26,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:08:26,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:08:26,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:08:26,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:08:26,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:08:26,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:08:26,737 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 [2019-10-15 03:08:26,770 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:08:26,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:08:26,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:08:26,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:08:26,772 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:08:26,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:08:26,773 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:08:26,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:08:26,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:08:26,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:08:26,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:08:26,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:08:26,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:08:26,774 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:08:26,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:08:26,774 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:08:26,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:08:26,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:08:26,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:08:26,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:08:26,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:08:26,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:08:26,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:08:26,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:08:26,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:08:26,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:08:26,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:08:26,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:08:26,778 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 [2019-10-15 03:08:27,112 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:08:27,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:08:27,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:08:27,131 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:08:27,131 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:08:27,132 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product23.cil.c [2019-10-15 03:08:27,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a527500/ac26caa4dc0145e3b4d06687fc9265be/FLAGa91aa7b89 [2019-10-15 03:08:27,875 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:08:27,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product23.cil.c [2019-10-15 03:08:27,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a527500/ac26caa4dc0145e3b4d06687fc9265be/FLAGa91aa7b89 [2019-10-15 03:08:28,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a527500/ac26caa4dc0145e3b4d06687fc9265be [2019-10-15 03:08:28,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:08:28,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:08:28,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:28,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:08:28,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:08:28,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:28" (1/1) ... [2019-10-15 03:08:28,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465ce920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:28, skipping insertion in model container [2019-10-15 03:08:28,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:28" (1/1) ... [2019-10-15 03:08:28,158 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:08:28,318 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:08:29,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:29,159 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:08:29,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:29,400 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:08:29,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:29 WrapperNode [2019-10-15 03:08:29,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:29,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:08:29,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:08:29,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:08:29,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:29" (1/1) ... [2019-10-15 03:08:29,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:29" (1/1) ... [2019-10-15 03:08:29,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:29" (1/1) ... [2019-10-15 03:08:29,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:29" (1/1) ... [2019-10-15 03:08:29,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:29" (1/1) ... [2019-10-15 03:08:29,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:29" (1/1) ... [2019-10-15 03:08:29,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:29" (1/1) ... [2019-10-15 03:08:29,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:08:29,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:08:29,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:08:29,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:08:29,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:29" (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 [2019-10-15 03:08:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:08:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:08:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:08:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:08:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:08:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:08:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:08:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:08:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:08:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:08:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:08:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:08:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:08:29,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:08:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:08:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:08:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:08:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:08:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:08:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:08:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:08:29,798 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:08:29,798 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:08:29,798 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:08:29,798 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:08:29,799 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:08:29,799 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:08:29,799 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:08:29,799 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:08:29,800 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:08:29,800 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:08:29,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:08:29,800 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:08:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:08:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:08:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:08:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:08:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:08:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:08:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:08:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:08:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:08:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:08:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:08:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:08:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:08:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:08:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:08:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:08:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:08:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:08:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:08:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:08:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:08:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:08:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:08:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:08:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:08:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:08:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:08:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:08:29,811 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:08:29,811 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:08:29,811 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:08:29,811 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:29,813 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:08:29,813 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:08:29,813 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:08:29,814 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:08:29,814 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:08:29,815 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:08:29,815 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:08:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:08:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:08:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:08:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:08:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:08:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:08:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:08:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:08:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:08:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:08:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:08:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:08:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:08:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:08:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:08:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:08:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:08:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:08:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:08:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:08:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:08:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:08:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:08:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:08:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:08:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:08:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:08:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:08:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:08:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:08:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:08:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:08:29,828 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:08:29,828 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:08:29,828 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:08:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:08:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:08:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:08:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:08:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:08:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:08:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:08:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:08:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:08:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:08:29,834 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:08:29,838 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:08:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:08:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:08:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:08:29,840 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:08:29,840 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:08:29,841 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:08:29,841 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:08:29,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:08:29,842 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:08:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:08:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:08:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:08:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:08:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:08:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:08:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:08:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:08:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:08:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:08:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:08:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:08:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:08:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:08:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:08:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:08:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:08:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:08:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:08:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:08:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:08:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:08:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:08:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:08:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:08:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:08:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:08:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:08:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:08:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:36,385 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:36,386 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:36,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:36 BoogieIcfgContainer [2019-10-15 03:08:36,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:36,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:36,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:36,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:36,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:08:28" (1/3) ... [2019-10-15 03:08:36,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2abfe890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:36, skipping insertion in model container [2019-10-15 03:08:36,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:29" (2/3) ... [2019-10-15 03:08:36,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2abfe890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:36, skipping insertion in model container [2019-10-15 03:08:36,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:36" (3/3) ... [2019-10-15 03:08:36,402 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product23.cil.c [2019-10-15 03:08:36,414 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:36,425 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:36,437 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:36,471 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:36,472 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:36,472 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:36,472 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:36,472 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:36,472 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:36,472 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:36,472 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:36,520 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states. [2019-10-15 03:08:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-15 03:08:36,554 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:36,557 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] [2019-10-15 03:08:36,562 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:36,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:36,569 INFO L82 PathProgramCache]: Analyzing trace with hash -116246569, now seen corresponding path program 1 times [2019-10-15 03:08:36,579 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:36,580 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905682686] [2019-10-15 03:08:36,580 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:36,580 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:36,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:37,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905682686] [2019-10-15 03:08:37,256 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:37,256 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:08:37,257 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493423313] [2019-10-15 03:08:37,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:08:37,264 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:37,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:08:37,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:37,282 INFO L87 Difference]: Start difference. First operand 594 states. Second operand 2 states. [2019-10-15 03:08:37,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:37,395 INFO L93 Difference]: Finished difference Result 497 states and 735 transitions. [2019-10-15 03:08:37,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:08:37,399 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-15 03:08:37,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:37,446 INFO L225 Difference]: With dead ends: 497 [2019-10-15 03:08:37,446 INFO L226 Difference]: Without dead ends: 463 [2019-10-15 03:08:37,451 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 [2019-10-15 03:08:37,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2019-10-15 03:08:37,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2019-10-15 03:08:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-10-15 03:08:37,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 684 transitions. [2019-10-15 03:08:37,622 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 684 transitions. Word has length 112 [2019-10-15 03:08:37,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:37,626 INFO L462 AbstractCegarLoop]: Abstraction has 463 states and 684 transitions. [2019-10-15 03:08:37,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:08:37,627 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 684 transitions. [2019-10-15 03:08:37,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 03:08:37,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:37,644 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] [2019-10-15 03:08:37,645 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:37,646 INFO L82 PathProgramCache]: Analyzing trace with hash -207245627, now seen corresponding path program 1 times [2019-10-15 03:08:37,646 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:37,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016646121] [2019-10-15 03:08:37,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:37,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:37,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:38,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016646121] [2019-10-15 03:08:38,054 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:38,054 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:38,054 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261299501] [2019-10-15 03:08:38,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:38,057 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:38,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:38,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:38,060 INFO L87 Difference]: Start difference. First operand 463 states and 684 transitions. Second operand 7 states. [2019-10-15 03:08:43,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:43,760 INFO L93 Difference]: Finished difference Result 1316 states and 1989 transitions. [2019-10-15 03:08:43,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:08:43,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-15 03:08:43,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:43,773 INFO L225 Difference]: With dead ends: 1316 [2019-10-15 03:08:43,774 INFO L226 Difference]: Without dead ends: 895 [2019-10-15 03:08:43,782 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 [2019-10-15 03:08:43,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2019-10-15 03:08:43,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 870. [2019-10-15 03:08:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2019-10-15 03:08:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1311 transitions. [2019-10-15 03:08:43,867 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1311 transitions. Word has length 113 [2019-10-15 03:08:43,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:43,868 INFO L462 AbstractCegarLoop]: Abstraction has 870 states and 1311 transitions. [2019-10-15 03:08:43,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:43,868 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1311 transitions. [2019-10-15 03:08:43,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 03:08:43,873 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:43,873 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] [2019-10-15 03:08:43,873 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:43,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:43,874 INFO L82 PathProgramCache]: Analyzing trace with hash -2005734008, now seen corresponding path program 1 times [2019-10-15 03:08:43,874 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:43,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527175062] [2019-10-15 03:08:43,875 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:43,875 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:43,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:44,139 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527175062] [2019-10-15 03:08:44,140 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:44,140 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:44,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974176820] [2019-10-15 03:08:44,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:44,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:44,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:44,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:44,142 INFO L87 Difference]: Start difference. First operand 870 states and 1311 transitions. Second operand 4 states. [2019-10-15 03:08:46,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:46,567 INFO L93 Difference]: Finished difference Result 2594 states and 4006 transitions. [2019-10-15 03:08:46,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:46,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-15 03:08:46,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:46,586 INFO L225 Difference]: With dead ends: 2594 [2019-10-15 03:08:46,586 INFO L226 Difference]: Without dead ends: 1766 [2019-10-15 03:08:46,592 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 [2019-10-15 03:08:46,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2019-10-15 03:08:46,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1668. [2019-10-15 03:08:46,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1668 states. [2019-10-15 03:08:46,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2561 transitions. [2019-10-15 03:08:46,725 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2561 transitions. Word has length 117 [2019-10-15 03:08:46,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:46,727 INFO L462 AbstractCegarLoop]: Abstraction has 1668 states and 2561 transitions. [2019-10-15 03:08:46,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:46,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2561 transitions. [2019-10-15 03:08:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:08:46,733 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:46,733 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] [2019-10-15 03:08:46,734 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:46,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:46,734 INFO L82 PathProgramCache]: Analyzing trace with hash -2049808782, now seen corresponding path program 1 times [2019-10-15 03:08:46,735 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:46,735 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993679952] [2019-10-15 03:08:46,735 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:46,735 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:46,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:47,003 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993679952] [2019-10-15 03:08:47,003 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:47,003 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:47,004 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264201145] [2019-10-15 03:08:47,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:47,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:47,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:47,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:47,007 INFO L87 Difference]: Start difference. First operand 1668 states and 2561 transitions. Second operand 4 states. [2019-10-15 03:08:49,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:49,176 INFO L93 Difference]: Finished difference Result 4935 states and 7738 transitions. [2019-10-15 03:08:49,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:49,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-15 03:08:49,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:49,212 INFO L225 Difference]: With dead ends: 4935 [2019-10-15 03:08:49,213 INFO L226 Difference]: Without dead ends: 3310 [2019-10-15 03:08:49,226 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 [2019-10-15 03:08:49,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2019-10-15 03:08:49,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 3189. [2019-10-15 03:08:49,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3189 states. [2019-10-15 03:08:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3189 states to 3189 states and 4962 transitions. [2019-10-15 03:08:49,564 INFO L78 Accepts]: Start accepts. Automaton has 3189 states and 4962 transitions. Word has length 118 [2019-10-15 03:08:49,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:49,568 INFO L462 AbstractCegarLoop]: Abstraction has 3189 states and 4962 transitions. [2019-10-15 03:08:49,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:49,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3189 states and 4962 transitions. [2019-10-15 03:08:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:08:49,575 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:49,576 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] [2019-10-15 03:08:49,576 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:49,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:49,577 INFO L82 PathProgramCache]: Analyzing trace with hash 878844426, now seen corresponding path program 1 times [2019-10-15 03:08:49,577 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:49,578 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532992375] [2019-10-15 03:08:49,578 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:49,579 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:49,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:50,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532992375] [2019-10-15 03:08:50,002 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:50,002 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:50,002 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628426400] [2019-10-15 03:08:50,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:50,003 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:50,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:50,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:50,004 INFO L87 Difference]: Start difference. First operand 3189 states and 4962 transitions. Second operand 4 states. [2019-10-15 03:08:52,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:52,711 INFO L93 Difference]: Finished difference Result 9550 states and 15278 transitions. [2019-10-15 03:08:52,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:52,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-15 03:08:52,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:52,768 INFO L225 Difference]: With dead ends: 9550 [2019-10-15 03:08:52,768 INFO L226 Difference]: Without dead ends: 6406 [2019-10-15 03:08:52,796 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 [2019-10-15 03:08:52,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6406 states. [2019-10-15 03:08:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6406 to 6240. [2019-10-15 03:08:53,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2019-10-15 03:08:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 9880 transitions. [2019-10-15 03:08:53,243 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 9880 transitions. Word has length 119 [2019-10-15 03:08:53,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:53,244 INFO L462 AbstractCegarLoop]: Abstraction has 6240 states and 9880 transitions. [2019-10-15 03:08:53,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:53,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 9880 transitions. [2019-10-15 03:08:53,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:08:53,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:53,248 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] [2019-10-15 03:08:53,249 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:53,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:53,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1472784564, now seen corresponding path program 1 times [2019-10-15 03:08:53,249 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:53,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329455509] [2019-10-15 03:08:53,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:53,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:53,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:53,457 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329455509] [2019-10-15 03:08:53,457 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:53,458 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:53,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141542812] [2019-10-15 03:08:53,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:53,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:53,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:53,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:53,459 INFO L87 Difference]: Start difference. First operand 6240 states and 9880 transitions. Second operand 4 states. [2019-10-15 03:08:55,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:55,682 INFO L93 Difference]: Finished difference Result 18805 states and 31089 transitions. [2019-10-15 03:08:55,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:55,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-15 03:08:55,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:55,805 INFO L225 Difference]: With dead ends: 18805 [2019-10-15 03:08:55,805 INFO L226 Difference]: Without dead ends: 12614 [2019-10-15 03:08:55,844 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 [2019-10-15 03:08:55,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12614 states. [2019-10-15 03:08:56,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12614 to 12359. [2019-10-15 03:08:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12359 states. [2019-10-15 03:08:56,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12359 states to 12359 states and 20126 transitions. [2019-10-15 03:08:56,777 INFO L78 Accepts]: Start accepts. Automaton has 12359 states and 20126 transitions. Word has length 120 [2019-10-15 03:08:56,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:56,778 INFO L462 AbstractCegarLoop]: Abstraction has 12359 states and 20126 transitions. [2019-10-15 03:08:56,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:56,778 INFO L276 IsEmpty]: Start isEmpty. Operand 12359 states and 20126 transitions. [2019-10-15 03:08:56,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:08:56,782 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:56,782 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] [2019-10-15 03:08:56,782 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:56,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:56,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1589903732, now seen corresponding path program 1 times [2019-10-15 03:08:56,783 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:56,783 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471977527] [2019-10-15 03:08:56,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:56,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:56,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:56,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471977527] [2019-10-15 03:08:56,979 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:56,979 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:56,979 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322263700] [2019-10-15 03:08:56,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:56,980 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:56,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:56,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:56,982 INFO L87 Difference]: Start difference. First operand 12359 states and 20126 transitions. Second operand 4 states. [2019-10-15 03:09:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:00,253 INFO L93 Difference]: Finished difference Result 37392 states and 65353 transitions. [2019-10-15 03:09:00,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:09:00,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-15 03:09:00,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:00,485 INFO L225 Difference]: With dead ends: 37392 [2019-10-15 03:09:00,485 INFO L226 Difference]: Without dead ends: 25078 [2019-10-15 03:09:00,585 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 [2019-10-15 03:09:00,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25078 states.