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 0.1.24-13a467a-m [2019-10-15 03:09:51,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:51,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:51,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:51,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:51,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:51,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:51,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:51,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:51,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:51,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:51,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:51,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:51,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:51,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:51,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:51,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:51,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:51,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:51,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:51,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:51,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:51,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:51,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:51,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:51,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:51,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:51,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:51,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:51,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:51,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:51,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:51,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:51,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:51,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:51,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:51,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:51,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:51,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:51,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:51,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:51,135 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 03:09:51,150 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:51,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:51,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:51,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:51,152 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:51,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:51,153 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:51,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:51,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:51,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:51,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:51,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:51,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:51,154 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:51,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:51,154 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:51,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:51,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:51,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:51,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:51,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:51,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:51,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:51,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:51,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:51,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:51,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:51,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:51,157 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 03:09:51,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:51,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:51,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:51,546 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:51,547 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:51,547 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_productSimulator.cil.c [2019-10-15 03:09:51,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d00e52d95/15212e7accd8471599ee5043793c56c6/FLAGf6cbb87f4 [2019-10-15 03:09:52,412 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:52,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_productSimulator.cil.c [2019-10-15 03:09:52,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d00e52d95/15212e7accd8471599ee5043793c56c6/FLAGf6cbb87f4 [2019-10-15 03:09:52,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d00e52d95/15212e7accd8471599ee5043793c56c6 [2019-10-15 03:09:52,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:52,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:52,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:52,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:52,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:52,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:52" (1/1) ... [2019-10-15 03:09:52,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd083ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:52, skipping insertion in model container [2019-10-15 03:09:52,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:52" (1/1) ... [2019-10-15 03:09:52,591 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:52,707 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:53,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:53,669 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:53,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:53,947 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:53,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:53 WrapperNode [2019-10-15 03:09:53,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:53,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:53,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:53,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:53,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:53" (1/1) ... [2019-10-15 03:09:53,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:53" (1/1) ... [2019-10-15 03:09:54,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:53" (1/1) ... [2019-10-15 03:09:54,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:53" (1/1) ... [2019-10-15 03:09:54,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:53" (1/1) ... [2019-10-15 03:09:54,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:53" (1/1) ... [2019-10-15 03:09:54,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:53" (1/1) ... [2019-10-15 03:09:54,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:54,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:54,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:54,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:54,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:53" (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 03:09:54,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:54,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:54,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:54,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:54,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:54,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:54,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:54,324 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:54,324 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:54,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:54,325 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:54,325 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:54,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:54,326 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:54,326 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:54,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:54,327 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:54,327 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:54,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-15 03:09:54,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-15 03:09:54,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:54,327 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-15 03:09:54,328 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-15 03:09:54,328 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:54,328 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-15 03:09:54,328 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-15 03:09:54,328 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-15 03:09:54,328 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-15 03:09:54,329 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:54,329 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:54,329 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:54,329 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:54,329 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:54,329 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-15 03:09:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-15 03:09:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-15 03:09:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-15 03:09:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-15 03:09:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-15 03:09:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-15 03:09:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-15 03:09:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-15 03:09:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-15 03:09:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-15 03:09:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-15 03:09:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:09:54,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:09:54,334 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:54,334 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:54,334 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:54,334 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:54,334 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:54,338 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:54,338 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:54,338 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:54,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:09:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:09:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-15 03:09:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-15 03:09:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-15 03:09:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-15 03:09:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-15 03:09:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-15 03:09:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-15 03:09:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-15 03:09:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-15 03:09:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-15 03:09:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-15 03:09:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-15 03:09:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-15 03:09:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-15 03:09:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-15 03:09:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-15 03:09:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-15 03:09:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-15 03:09:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-15 03:09:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-15 03:09:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:10:01,304 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:10:01,305 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:10:01,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:01 BoogieIcfgContainer [2019-10-15 03:10:01,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:10:01,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:10:01,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:10:01,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:10:01,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:52" (1/3) ... [2019-10-15 03:10:01,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7bc78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:01, skipping insertion in model container [2019-10-15 03:10:01,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:53" (2/3) ... [2019-10-15 03:10:01,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7bc78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:01, skipping insertion in model container [2019-10-15 03:10:01,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:01" (3/3) ... [2019-10-15 03:10:01,322 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_productSimulator.cil.c [2019-10-15 03:10:01,334 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:10:01,345 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:10:01,358 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:10:01,393 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:10:01,393 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:10:01,393 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:10:01,393 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:10:01,393 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:10:01,393 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:10:01,393 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:10:01,394 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:10:01,430 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states. [2019-10-15 03:10:01,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-15 03:10:01,445 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:01,446 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] [2019-10-15 03:10:01,448 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:01,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:01,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1567062533, now seen corresponding path program 1 times [2019-10-15 03:10:01,466 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:01,467 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645291115] [2019-10-15 03:10:01,467 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:01,467 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:01,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:10:02,294 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645291115] [2019-10-15 03:10:02,296 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:02,297 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:10:02,297 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923357083] [2019-10-15 03:10:02,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:10:02,309 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:02,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:10:02,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:10:02,330 INFO L87 Difference]: Start difference. First operand 731 states. Second operand 6 states. [2019-10-15 03:10:02,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:02,619 INFO L93 Difference]: Finished difference Result 1169 states and 1713 transitions. [2019-10-15 03:10:02,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:10:02,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-10-15 03:10:02,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:02,660 INFO L225 Difference]: With dead ends: 1169 [2019-10-15 03:10:02,661 INFO L226 Difference]: Without dead ends: 588 [2019-10-15 03:10:02,674 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:02,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-10-15 03:10:02,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2019-10-15 03:10:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-10-15 03:10:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 850 transitions. [2019-10-15 03:10:02,823 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 850 transitions. Word has length 107 [2019-10-15 03:10:02,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:02,826 INFO L462 AbstractCegarLoop]: Abstraction has 588 states and 850 transitions. [2019-10-15 03:10:02,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:10:02,828 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 850 transitions. [2019-10-15 03:10:02,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-15 03:10:02,842 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:02,842 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] [2019-10-15 03:10:02,842 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:02,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:02,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1392192250, now seen corresponding path program 1 times [2019-10-15 03:10:02,844 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:02,845 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929557314] [2019-10-15 03:10:02,845 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:02,845 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:02,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:10:03,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929557314] [2019-10-15 03:10:03,393 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652697863] [2019-10-15 03:10:03,393 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 [2019-10-15 03:10:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:04,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 3322 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:10:04,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:10:04,133 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:10:04,352 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:10:04,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:10:04,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024301085] [2019-10-15 03:10:04,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:04,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:04,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:04,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:04,366 INFO L87 Difference]: Start difference. First operand 588 states and 850 transitions. Second operand 3 states. [2019-10-15 03:10:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:04,495 INFO L93 Difference]: Finished difference Result 1665 states and 2445 transitions. [2019-10-15 03:10:04,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:04,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2019-10-15 03:10:04,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:04,513 INFO L225 Difference]: With dead ends: 1665 [2019-10-15 03:10:04,514 INFO L226 Difference]: Without dead ends: 1126 [2019-10-15 03:10:04,522 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:04,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2019-10-15 03:10:04,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1122. [2019-10-15 03:10:04,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2019-10-15 03:10:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1640 transitions. [2019-10-15 03:10:04,658 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1640 transitions. Word has length 108 [2019-10-15 03:10:04,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:04,660 INFO L462 AbstractCegarLoop]: Abstraction has 1122 states and 1640 transitions. [2019-10-15 03:10:04,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:04,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1640 transitions. [2019-10-15 03:10:04,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-15 03:10:04,670 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:04,670 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] [2019-10-15 03:10:04,879 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:04,880 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:04,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:04,880 INFO L82 PathProgramCache]: Analyzing trace with hash 71449972, now seen corresponding path program 1 times [2019-10-15 03:10:04,881 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:04,882 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952552265] [2019-10-15 03:10:04,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:04,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:04,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:10:05,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952552265] [2019-10-15 03:10:05,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998764208] [2019-10-15 03:10:05,335 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 [2019-10-15 03:10:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:06,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 3322 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:10:06,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:10:06,158 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:10:06,317 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:10:06,317 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:10:06,317 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368837473] [2019-10-15 03:10:06,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:06,319 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:06,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:06,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:06,319 INFO L87 Difference]: Start difference. First operand 1122 states and 1640 transitions. Second operand 3 states. [2019-10-15 03:10:06,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:06,448 INFO L93 Difference]: Finished difference Result 3124 states and 4646 transitions. [2019-10-15 03:10:06,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:06,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2019-10-15 03:10:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:06,466 INFO L225 Difference]: With dead ends: 3124 [2019-10-15 03:10:06,466 INFO L226 Difference]: Without dead ends: 2073 [2019-10-15 03:10:06,473 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2019-10-15 03:10:06,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2051. [2019-10-15 03:10:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2051 states. [2019-10-15 03:10:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 3009 transitions. [2019-10-15 03:10:06,584 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 3009 transitions. Word has length 109 [2019-10-15 03:10:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:06,585 INFO L462 AbstractCegarLoop]: Abstraction has 2051 states and 3009 transitions. [2019-10-15 03:10:06,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 3009 transitions. [2019-10-15 03:10:06,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:10:06,589 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:06,589 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] [2019-10-15 03:10:06,806 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:06,807 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:06,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:06,807 INFO L82 PathProgramCache]: Analyzing trace with hash 616910148, now seen corresponding path program 1 times [2019-10-15 03:10:06,808 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:06,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67428823] [2019-10-15 03:10:06,808 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:06,808 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:06,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:10:07,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67428823] [2019-10-15 03:10:07,096 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:07,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-15 03:10:07,097 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367166529] [2019-10-15 03:10:07,097 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 03:10:07,098 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:07,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 03:10:07,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:10:07,098 INFO L87 Difference]: Start difference. First operand 2051 states and 3009 transitions. Second operand 11 states. [2019-10-15 03:10:17,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:17,178 INFO L93 Difference]: Finished difference Result 4109 states and 6109 transitions. [2019-10-15 03:10:17,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:10:17,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2019-10-15 03:10:17,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:17,217 INFO L225 Difference]: With dead ends: 4109 [2019-10-15 03:10:17,217 INFO L226 Difference]: Without dead ends: 4106 [2019-10-15 03:10:17,220 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:10:17,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2019-10-15 03:10:17,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4001. [2019-10-15 03:10:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4001 states. [2019-10-15 03:10:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 5964 transitions. [2019-10-15 03:10:17,456 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 5964 transitions. Word has length 110 [2019-10-15 03:10:17,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:17,456 INFO L462 AbstractCegarLoop]: Abstraction has 4001 states and 5964 transitions. [2019-10-15 03:10:17,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 03:10:17,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 5964 transitions. [2019-10-15 03:10:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:10:17,459 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:17,460 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] [2019-10-15 03:10:17,460 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:17,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:17,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1253405958, now seen corresponding path program 1 times [2019-10-15 03:10:17,461 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:17,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856616274] [2019-10-15 03:10:17,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:17,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:17,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:10:17,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856616274] [2019-10-15 03:10:17,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484205846] [2019-10-15 03:10:17,758 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 [2019-10-15 03:10:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:18,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 3323 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:10:18,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:10:18,598 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:10:18,832 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:10:18,832 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:10:18,833 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70420786] [2019-10-15 03:10:18,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:18,833 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:18,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:18,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:18,834 INFO L87 Difference]: Start difference. First operand 4001 states and 5964 transitions. Second operand 3 states. [2019-10-15 03:10:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:19,113 INFO L93 Difference]: Finished difference Result 9803 states and 14864 transitions. [2019-10-15 03:10:19,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:19,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-10-15 03:10:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:19,174 INFO L225 Difference]: With dead ends: 9803 [2019-10-15 03:10:19,174 INFO L226 Difference]: Without dead ends: 5873 [2019-10-15 03:10:19,197 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5873 states. [2019-10-15 03:10:19,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5873 to 5759. [2019-10-15 03:10:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5759 states. [2019-10-15 03:10:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5759 states to 5759 states and 8589 transitions. [2019-10-15 03:10:19,570 INFO L78 Accepts]: Start accepts. Automaton has 5759 states and 8589 transitions. Word has length 110 [2019-10-15 03:10:19,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:19,571 INFO L462 AbstractCegarLoop]: Abstraction has 5759 states and 8589 transitions. [2019-10-15 03:10:19,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5759 states and 8589 transitions. [2019-10-15 03:10:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-15 03:10:19,576 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:19,577 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] [2019-10-15 03:10:19,788 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:19,789 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:19,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:19,790 INFO L82 PathProgramCache]: Analyzing trace with hash 102908054, now seen corresponding path program 1 times [2019-10-15 03:10:19,791 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:19,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885061561] [2019-10-15 03:10:19,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:19,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:19,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:10:20,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885061561] [2019-10-15 03:10:20,157 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104812125] [2019-10-15 03:10:20,157 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 [2019-10-15 03:10:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:20,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 3335 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:10:20,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:10:21,045 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:21,175 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:10:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:10:21,358 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:10:21,358 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-15 03:10:21,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186647992] [2019-10-15 03:10:21,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 03:10:21,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:21,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 03:10:21,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:10:21,360 INFO L87 Difference]: Start difference. First operand 5759 states and 8589 transitions. Second operand 11 states.