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_spec3_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:05:18,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:05:18,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:05:18,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:05:18,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:05:18,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:05:18,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:05:18,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:05:18,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:05:18,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:05:18,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:05:19,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:05:19,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:05:19,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:05:19,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:05:19,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:05:19,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:05:19,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:05:19,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:05:19,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:05:19,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:05:19,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:05:19,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:05:19,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:05:19,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:05:19,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:05:19,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:05:19,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:05:19,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:05:19,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:05:19,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:05:19,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:05:19,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:05:19,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:05:19,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:05:19,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:05:19,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:05:19,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:05:19,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:05:19,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:05:19,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:05:19,026 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 23:05:19,047 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:05:19,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:05:19,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:05:19,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:05:19,049 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:05:19,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:05:19,050 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:05:19,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:05:19,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:05:19,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:05:19,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:05:19,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:05:19,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:05:19,052 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:05:19,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:05:19,053 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:05:19,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:05:19,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:05:19,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:05:19,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:05:19,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:05:19,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:19,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:05:19,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:05:19,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:05:19,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:05:19,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:05:19,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:05:19,056 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 23:05:19,354 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:05:19,367 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:05:19,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:05:19,372 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:05:19,372 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:05:19,373 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_productSimulator.cil.c [2019-10-13 23:05:19,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d27a9b8/d82753248a0345e7b858cac14e64e445/FLAGecb23f8a9 [2019-10-13 23:05:20,183 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:05:20,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_productSimulator.cil.c [2019-10-13 23:05:20,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d27a9b8/d82753248a0345e7b858cac14e64e445/FLAGecb23f8a9 [2019-10-13 23:05:20,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d27a9b8/d82753248a0345e7b858cac14e64e445 [2019-10-13 23:05:20,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:05:20,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:05:20,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:20,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:05:20,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:05:20,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:20" (1/1) ... [2019-10-13 23:05:20,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25eea2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:20, skipping insertion in model container [2019-10-13 23:05:20,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:20" (1/1) ... [2019-10-13 23:05:20,316 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:05:20,385 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:05:21,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:21,236 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:05:21,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:21,430 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:05:21,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21 WrapperNode [2019-10-13 23:05:21,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:21,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:05:21,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:05:21,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:05:21,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2019-10-13 23:05:21,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2019-10-13 23:05:21,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2019-10-13 23:05:21,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2019-10-13 23:05:21,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2019-10-13 23:05:21,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2019-10-13 23:05:21,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2019-10-13 23:05:21,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:05:21,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:05:21,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:05:21,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:05:21,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (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 23:05:21,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:05:21,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:05:21,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:21,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:21,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:21,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:21,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:05:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:05:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:05:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:05:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:05:21,779 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:05:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:05:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:05:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:05:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:05:21,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:05:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:05:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:05:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:05:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:05:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:05:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-13 23:05:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-13 23:05:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:05:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-13 23:05:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-13 23:05:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:05:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-13 23:05:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-13 23:05:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-13 23:05:21,786 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-13 23:05:21,786 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:05:21,786 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:05:21,787 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:05:21,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:05:21,787 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:05:21,788 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:05:21,788 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:05:21,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:05:21,788 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:05:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:05:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 23:05:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 23:05:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 23:05:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 23:05:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:05:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:05:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:05:21,791 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 23:05:21,791 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 23:05:21,791 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 23:05:21,791 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 23:05:21,792 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:21,792 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:05:21,792 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:05:21,792 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-13 23:05:21,792 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-13 23:05:21,793 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:05:21,794 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-13 23:05:21,794 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-13 23:05:21,794 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:05:21,794 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:05:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:05:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:05:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:05:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:05:21,796 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:05:21,796 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:05:21,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:05:21,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:05:21,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:05:21,797 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:05:21,798 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:05:21,798 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:05:21,798 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:05:21,799 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:05:21,799 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:05:21,799 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:05:21,799 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:05:21,800 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:05:21,800 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:05:21,801 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:05:21,801 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:05:21,801 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:05:21,801 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:05:21,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:05:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:05:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:05:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:05:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:05:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:05:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:05:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:05:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:05:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:05:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:05:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:05:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:05:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:05:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:05:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:05:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:05:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:05:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:05:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:05:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:05:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:05:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:05:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:05:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:05:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:05:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:05:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:05:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:05:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:05:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:05:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:05:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:05:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:05:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:05:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:05:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:05:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:05:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:05:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:05:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:05:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:05:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:05:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:05:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:05:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:05:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:05:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:05:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:05:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:05:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-13 23:05:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-13 23:05:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-13 23:05:21,818 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-13 23:05:21,825 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-13 23:05:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-13 23:05:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-13 23:05:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-13 23:05:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:05:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:05:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:05:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:05:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:05:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 23:05:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 23:05:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 23:05:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 23:05:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:05:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:05:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 23:05:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 23:05:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 23:05:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 23:05:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:05:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:05:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-13 23:05:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-13 23:05:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:05:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:05:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-13 23:05:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-13 23:05:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:05:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:05:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:05:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:05:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:05:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:05:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:05:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:05:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:05:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:05:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:05:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:05:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:05:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:05:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:05:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:05:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:05:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:05:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:05:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:05:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:05:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:05:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:05:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:05:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:05:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:05:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:05:27,210 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:05:27,210 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:05:27,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:27 BoogieIcfgContainer [2019-10-13 23:05:27,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:05:27,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:05:27,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:05:27,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:05:27,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:05:20" (1/3) ... [2019-10-13 23:05:27,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd42d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:27, skipping insertion in model container [2019-10-13 23:05:27,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (2/3) ... [2019-10-13 23:05:27,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd42d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:27, skipping insertion in model container [2019-10-13 23:05:27,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:27" (3/3) ... [2019-10-13 23:05:27,221 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_productSimulator.cil.c [2019-10-13 23:05:27,234 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:05:27,244 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:05:27,257 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:05:27,295 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:05:27,295 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:05:27,296 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:05:27,296 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:05:27,296 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:05:27,296 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:05:27,296 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:05:27,296 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:05:27,340 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states. [2019-10-13 23:05:27,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-13 23:05:27,355 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:27,356 INFO L380 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:27,358 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:27,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:27,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1567062533, now seen corresponding path program 1 times [2019-10-13 23:05:27,376 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:27,377 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281236555] [2019-10-13 23:05:27,377 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:27,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:27,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:28,106 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:05:28,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281236555] [2019-10-13 23:05:28,108 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:28,108 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:05:28,109 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015507075] [2019-10-13 23:05:28,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:05:28,115 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:28,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:05:28,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:05:28,136 INFO L87 Difference]: Start difference. First operand 731 states. Second operand 6 states. [2019-10-13 23:05:28,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:28,401 INFO L93 Difference]: Finished difference Result 1169 states and 1713 transitions. [2019-10-13 23:05:28,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:05:28,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-10-13 23:05:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:28,443 INFO L225 Difference]: With dead ends: 1169 [2019-10-13 23:05:28,443 INFO L226 Difference]: Without dead ends: 588 [2019-10-13 23:05:28,457 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:28,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-10-13 23:05:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2019-10-13 23:05:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-10-13 23:05:28,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 850 transitions. [2019-10-13 23:05:28,665 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 850 transitions. Word has length 107 [2019-10-13 23:05:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:28,668 INFO L462 AbstractCegarLoop]: Abstraction has 588 states and 850 transitions. [2019-10-13 23:05:28,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:05:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 850 transitions. [2019-10-13 23:05:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 23:05:28,680 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:28,680 INFO L380 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:28,681 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1392192250, now seen corresponding path program 1 times [2019-10-13 23:05:28,683 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:28,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821597853] [2019-10-13 23:05:28,684 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:28,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:28,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:05:29,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821597853] [2019-10-13 23:05:29,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953115915] [2019-10-13 23:05:29,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:29,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 3322 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:05:29,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:05:29,892 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:05:30,017 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:30,017 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:30,017 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983122409] [2019-10-13 23:05:30,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:30,020 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:30,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:30,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:30,020 INFO L87 Difference]: Start difference. First operand 588 states and 850 transitions. Second operand 3 states. [2019-10-13 23:05:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:30,139 INFO L93 Difference]: Finished difference Result 1665 states and 2445 transitions. [2019-10-13 23:05:30,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:30,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2019-10-13 23:05:30,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:30,153 INFO L225 Difference]: With dead ends: 1665 [2019-10-13 23:05:30,153 INFO L226 Difference]: Without dead ends: 1126 [2019-10-13 23:05:30,158 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:30,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2019-10-13 23:05:30,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1122. [2019-10-13 23:05:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2019-10-13 23:05:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1640 transitions. [2019-10-13 23:05:30,264 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1640 transitions. Word has length 108 [2019-10-13 23:05:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:30,267 INFO L462 AbstractCegarLoop]: Abstraction has 1122 states and 1640 transitions. [2019-10-13 23:05:30,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1640 transitions. [2019-10-13 23:05:30,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-13 23:05:30,276 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:30,277 INFO L380 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:30,486 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:30,486 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:30,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:30,487 INFO L82 PathProgramCache]: Analyzing trace with hash 71449972, now seen corresponding path program 1 times [2019-10-13 23:05:30,487 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:30,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873605172] [2019-10-13 23:05:30,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:30,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:30,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:05:30,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873605172] [2019-10-13 23:05:30,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784426521] [2019-10-13 23:05:30,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:31,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 3322 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:31,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:31,445 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:05:31,445 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:05:31,599 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:31,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:31,599 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045854806] [2019-10-13 23:05:31,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:31,600 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:31,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:31,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:31,601 INFO L87 Difference]: Start difference. First operand 1122 states and 1640 transitions. Second operand 3 states. [2019-10-13 23:05:31,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:31,736 INFO L93 Difference]: Finished difference Result 3124 states and 4646 transitions. [2019-10-13 23:05:31,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:31,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2019-10-13 23:05:31,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:31,752 INFO L225 Difference]: With dead ends: 3124 [2019-10-13 23:05:31,752 INFO L226 Difference]: Without dead ends: 2073 [2019-10-13 23:05:31,758 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:31,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2019-10-13 23:05:31,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2051. [2019-10-13 23:05:31,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2051 states. [2019-10-13 23:05:31,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 3009 transitions. [2019-10-13 23:05:31,863 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 3009 transitions. Word has length 109 [2019-10-13 23:05:31,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:31,864 INFO L462 AbstractCegarLoop]: Abstraction has 2051 states and 3009 transitions. [2019-10-13 23:05:31,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:31,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 3009 transitions. [2019-10-13 23:05:31,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-13 23:05:31,867 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:31,867 INFO L380 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:32,071 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:32,072 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:32,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash 616910148, now seen corresponding path program 1 times [2019-10-13 23:05:32,073 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:32,074 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079691889] [2019-10-13 23:05:32,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:32,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:32,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:05:32,329 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079691889] [2019-10-13 23:05:32,330 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:32,330 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 23:05:32,330 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291855839] [2019-10-13 23:05:32,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 23:05:32,331 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:32,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 23:05:32,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:05:32,332 INFO L87 Difference]: Start difference. First operand 2051 states and 3009 transitions. Second operand 11 states. [2019-10-13 23:05:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:38,747 INFO L93 Difference]: Finished difference Result 4109 states and 6109 transitions. [2019-10-13 23:05:38,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:05:38,748 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2019-10-13 23:05:38,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:38,781 INFO L225 Difference]: With dead ends: 4109 [2019-10-13 23:05:38,781 INFO L226 Difference]: Without dead ends: 4106 [2019-10-13 23:05:38,784 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:05:38,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2019-10-13 23:05:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4001. [2019-10-13 23:05:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4001 states. [2019-10-13 23:05:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 5964 transitions. [2019-10-13 23:05:38,990 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 5964 transitions. Word has length 110 [2019-10-13 23:05:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:38,990 INFO L462 AbstractCegarLoop]: Abstraction has 4001 states and 5964 transitions. [2019-10-13 23:05:38,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 23:05:38,991 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 5964 transitions. [2019-10-13 23:05:38,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-13 23:05:38,993 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:38,993 INFO L380 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:38,994 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:38,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:38,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1253405958, now seen corresponding path program 1 times [2019-10-13 23:05:38,994 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:38,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734072031] [2019-10-13 23:05:38,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:05:39,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734072031] [2019-10-13 23:05:39,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868162130] [2019-10-13 23:05:39,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:39,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 3323 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:39,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:05:39,973 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:05:40,082 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:40,082 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:40,082 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494096690] [2019-10-13 23:05:40,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:40,083 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:40,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:40,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:40,084 INFO L87 Difference]: Start difference. First operand 4001 states and 5964 transitions. Second operand 3 states. [2019-10-13 23:05:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:40,362 INFO L93 Difference]: Finished difference Result 9803 states and 14864 transitions. [2019-10-13 23:05:40,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:40,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-10-13 23:05:40,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:40,409 INFO L225 Difference]: With dead ends: 9803 [2019-10-13 23:05:40,410 INFO L226 Difference]: Without dead ends: 5873 [2019-10-13 23:05:40,436 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:40,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5873 states. [2019-10-13 23:05:40,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5873 to 5759. [2019-10-13 23:05:40,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5759 states. [2019-10-13 23:05:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5759 states to 5759 states and 8589 transitions. [2019-10-13 23:05:40,989 INFO L78 Accepts]: Start accepts. Automaton has 5759 states and 8589 transitions. Word has length 110 [2019-10-13 23:05:40,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:40,990 INFO L462 AbstractCegarLoop]: Abstraction has 5759 states and 8589 transitions. [2019-10-13 23:05:40,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:40,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5759 states and 8589 transitions. [2019-10-13 23:05:40,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-13 23:05:40,993 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:40,993 INFO L380 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:41,202 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:41,203 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:41,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:41,203 INFO L82 PathProgramCache]: Analyzing trace with hash 102908054, now seen corresponding path program 1 times [2019-10-13 23:05:41,204 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:41,204 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460866627] [2019-10-13 23:05:41,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:41,205 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:41,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:05:41,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460866627] [2019-10-13 23:05:41,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594589263] [2019-10-13 23:05:41,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:42,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 3335 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 23:05:42,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:05:42,201 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:42,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:05:42,507 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:42,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-13 23:05:42,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949180406] [2019-10-13 23:05:42,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 23:05:42,508 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:42,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 23:05:42,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:05:42,509 INFO L87 Difference]: Start difference. First operand 5759 states and 8589 transitions. Second operand 11 states. [2019-10-13 23:05:49,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:49,092 INFO L93 Difference]: Finished difference Result 16222 states and 24762 transitions. [2019-10-13 23:05:49,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 23:05:49,093 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2019-10-13 23:05:49,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:49,178 INFO L225 Difference]: With dead ends: 16222 [2019-10-13 23:05:49,178 INFO L226 Difference]: Without dead ends: 10534 [2019-10-13 23:05:49,231 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 216 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2019-10-13 23:05:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10534 states. [2019-10-13 23:05:49,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10534 to 10502. [2019-10-13 23:05:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10502 states. [2019-10-13 23:05:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10502 states to 10502 states and 15392 transitions. [2019-10-13 23:05:49,883 INFO L78 Accepts]: Start accepts. Automaton has 10502 states and 15392 transitions. Word has length 111 [2019-10-13 23:05:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:49,885 INFO L462 AbstractCegarLoop]: Abstraction has 10502 states and 15392 transitions. [2019-10-13 23:05:49,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 23:05:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 10502 states and 15392 transitions. [2019-10-13 23:05:49,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-10-13 23:05:49,897 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:49,897 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:50,108 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:50,108 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:50,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:50,109 INFO L82 PathProgramCache]: Analyzing trace with hash -293524481, now seen corresponding path program 1 times [2019-10-13 23:05:50,113 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:50,114 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136262437] [2019-10-13 23:05:50,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:50,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:50,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat