/usr/bin/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_spec1_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:09:35,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:09:35,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:09:35,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:09:35,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:09:35,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:09:35,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:09:35,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:09:35,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:09:35,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:09:35,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:09:35,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:09:35,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:09:35,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:09:35,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:09:35,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:09:35,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:09:35,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:09:35,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:09:35,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:09:35,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:09:35,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:09:35,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:09:35,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:09:35,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:09:35,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:09:35,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:09:35,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:09:35,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:09:35,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:09:35,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:09:35,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:09:35,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:09:35,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:09:35,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:09:35,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:09:35,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:09:35,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:09:35,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:09:35,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:09:35,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:09:35,635 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 [2019-11-07 04:09:35,659 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:09:35,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:09:35,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:09:35,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:09:35,661 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:09:35,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:09:35,662 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:09:35,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:09:35,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:09:35,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:09:35,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:09:35,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:09:35,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:09:35,664 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:09:35,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:09:35,665 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:09:35,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:09:35,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:09:35,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:09:35,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:09:35,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:09:35,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:09:35,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:09:35,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:09:35,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:09:35,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:09:35,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:09:35,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:09:35,667 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 [2019-11-07 04:09:35,961 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:09:35,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:09:35,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:09:35,978 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:09:35,979 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:09:35,980 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_productSimulator.cil.c [2019-11-07 04:09:36,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/199e9d21f/6957254b85084cba9f68231f2aa0ec5f/FLAGb2e151f66 [2019-11-07 04:09:36,672 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:09:36,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_productSimulator.cil.c [2019-11-07 04:09:36,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/199e9d21f/6957254b85084cba9f68231f2aa0ec5f/FLAGb2e151f66 [2019-11-07 04:09:36,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/199e9d21f/6957254b85084cba9f68231f2aa0ec5f [2019-11-07 04:09:36,885 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:09:36,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:09:36,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:09:36,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:09:36,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:09:36,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:09:36" (1/1) ... [2019-11-07 04:09:36,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5178d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:36, skipping insertion in model container [2019-11-07 04:09:36,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:09:36" (1/1) ... [2019-11-07 04:09:36,904 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:09:36,984 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:09:37,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:09:37,772 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:09:38,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:09:38,083 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:09:38,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:38 WrapperNode [2019-11-07 04:09:38,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:09:38,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:09:38,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:09:38,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:09:38,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:38" (1/1) ... [2019-11-07 04:09:38,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:38" (1/1) ... [2019-11-07 04:09:38,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:38" (1/1) ... [2019-11-07 04:09:38,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:38" (1/1) ... [2019-11-07 04:09:38,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:38" (1/1) ... [2019-11-07 04:09:38,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:38" (1/1) ... [2019-11-07 04:09:38,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:38" (1/1) ... [2019-11-07 04:09:38,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:09:38,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:09:38,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:09:38,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:09:38,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:38" (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 [2019-11-07 04:09:38,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:09:38,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:09:38,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:09:38,390 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:09:38,391 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:09:38,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:09:38,392 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:09:38,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:09:38,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:09:38,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:09:38,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:09:38,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:09:38,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:09:38,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:09:38,395 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:09:38,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:09:38,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:09:38,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:09:38,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:09:38,399 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:09:38,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:09:38,399 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:09:38,399 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:09:38,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:09:38,400 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:09:38,400 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:09:38,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:09:38,400 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:09:38,401 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:09:38,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-11-07 04:09:38,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-11-07 04:09:38,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:09:38,401 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-11-07 04:09:38,402 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-11-07 04:09:38,402 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:09:38,402 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-11-07 04:09:38,402 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-11-07 04:09:38,402 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-11-07 04:09:38,402 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-11-07 04:09:38,403 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:09:38,403 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:09:38,403 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:09:38,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:09:38,403 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:09:38,403 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:09:38,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:09:38,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:09:38,404 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:09:38,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:09:38,404 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-11-07 04:09:38,404 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-11-07 04:09:38,404 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-11-07 04:09:38,405 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-11-07 04:09:38,405 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:09:38,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:09:38,405 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:09:38,405 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-11-07 04:09:38,405 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-11-07 04:09:38,406 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-11-07 04:09:38,406 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-11-07 04:09:38,407 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:09:38,407 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:09:38,407 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:09:38,407 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-11-07 04:09:38,407 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-11-07 04:09:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:09:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-11-07 04:09:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-11-07 04:09:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:09:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:09:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:09:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:09:38,409 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:09:38,410 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:09:38,410 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:09:38,410 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:09:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:09:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:09:38,412 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:09:38,412 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:09:38,413 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:09:38,413 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:09:38,413 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:09:38,413 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:09:38,413 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:09:38,414 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:09:38,414 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:09:38,415 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:09:38,415 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:09:38,415 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:09:38,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:09:38,415 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:09:38,416 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:09:38,416 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:09:38,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:09:38,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:09:38,416 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:09:38,416 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:09:38,417 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:09:38,417 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:09:38,417 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:09:38,417 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:09:38,417 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:09:38,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:09:38,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:09:38,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:09:38,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:09:38,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:09:38,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:09:38,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:09:38,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:09:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:09:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:09:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:09:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:09:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:09:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:09:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:09:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:09:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:09:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:09:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:09:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:09:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:09:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:09:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:09:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:09:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:09:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:09:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:09:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:09:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:09:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:09:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:09:38,428 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:09:38,428 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:09:38,428 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:09:38,428 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:09:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:09:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:09:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:09:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:09:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:09:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:09:38,437 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:09:38,437 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:09:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:09:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:09:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:09:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:09:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:09:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-11-07 04:09:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-11-07 04:09:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-11-07 04:09:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-11-07 04:09:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-11-07 04:09:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-11-07 04:09:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-11-07 04:09:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-11-07 04:09:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:09:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:09:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:09:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:09:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:09:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-11-07 04:09:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-11-07 04:09:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-11-07 04:09:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-11-07 04:09:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:09:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:09:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-11-07 04:09:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-11-07 04:09:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-11-07 04:09:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-11-07 04:09:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:09:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:09:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:09:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-11-07 04:09:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-11-07 04:09:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-11-07 04:09:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-11-07 04:09:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:09:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:09:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:09:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:09:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:09:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:09:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:09:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:09:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:09:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:09:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:09:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:09:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:09:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:09:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:09:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:09:38,447 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:09:38,447 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:09:38,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:09:38,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:09:38,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:09:38,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:09:44,015 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:09:44,016 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:09:44,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:09:44 BoogieIcfgContainer [2019-11-07 04:09:44,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:09:44,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:09:44,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:09:44,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:09:44,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:09:36" (1/3) ... [2019-11-07 04:09:44,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ca887f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:09:44, skipping insertion in model container [2019-11-07 04:09:44,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:38" (2/3) ... [2019-11-07 04:09:44,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ca887f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:09:44, skipping insertion in model container [2019-11-07 04:09:44,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:09:44" (3/3) ... [2019-11-07 04:09:44,027 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_productSimulator.cil.c [2019-11-07 04:09:44,037 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:09:44,052 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:09:44,064 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:09:44,103 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:09:44,103 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:09:44,103 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:09:44,104 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:09:44,104 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:09:44,104 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:09:44,104 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:09:44,104 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:09:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2019-11-07 04:09:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-07 04:09:44,160 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:44,162 INFO L410 BasicCegarLoop]: trace histogram [5, 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] [2019-11-07 04:09:44,166 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:44,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:44,172 INFO L82 PathProgramCache]: Analyzing trace with hash -636742612, now seen corresponding path program 1 times [2019-11-07 04:09:44,182 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:44,182 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588825701] [2019-11-07 04:09:44,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:09:44,978 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588825701] [2019-11-07 04:09:44,979 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:44,979 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:09:44,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586552050] [2019-11-07 04:09:44,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:09:44,987 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:45,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:09:45,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:09:45,009 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 6 states. [2019-11-07 04:09:45,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:45,227 INFO L93 Difference]: Finished difference Result 1129 states and 1646 transitions. [2019-11-07 04:09:45,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:09:45,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2019-11-07 04:09:45,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:45,274 INFO L225 Difference]: With dead ends: 1129 [2019-11-07 04:09:45,275 INFO L226 Difference]: Without dead ends: 570 [2019-11-07 04:09:45,290 INFO L630 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 [2019-11-07 04:09:45,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2019-11-07 04:09:45,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2019-11-07 04:09:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2019-11-07 04:09:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 821 transitions. [2019-11-07 04:09:45,453 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 821 transitions. Word has length 124 [2019-11-07 04:09:45,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:45,459 INFO L462 AbstractCegarLoop]: Abstraction has 570 states and 821 transitions. [2019-11-07 04:09:45,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:09:45,460 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 821 transitions. [2019-11-07 04:09:45,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-07 04:09:45,475 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:45,476 INFO L410 BasicCegarLoop]: trace histogram [5, 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] [2019-11-07 04:09:45,476 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:45,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:45,476 INFO L82 PathProgramCache]: Analyzing trace with hash 811356133, now seen corresponding path program 1 times [2019-11-07 04:09:45,477 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:45,479 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372652057] [2019-11-07 04:09:45,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:09:45,869 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372652057] [2019-11-07 04:09:45,869 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:45,869 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:09:45,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469406929] [2019-11-07 04:09:45,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:09:45,872 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:45,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:09:45,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:09:45,873 INFO L87 Difference]: Start difference. First operand 570 states and 821 transitions. Second operand 4 states. [2019-11-07 04:09:47,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:47,388 INFO L93 Difference]: Finished difference Result 1591 states and 2330 transitions. [2019-11-07 04:09:47,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:09:47,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-11-07 04:09:47,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:47,399 INFO L225 Difference]: With dead ends: 1591 [2019-11-07 04:09:47,399 INFO L226 Difference]: Without dead ends: 1092 [2019-11-07 04:09:47,403 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:09:47,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2019-11-07 04:09:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1079. [2019-11-07 04:09:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2019-11-07 04:09:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1561 transitions. [2019-11-07 04:09:47,484 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1561 transitions. Word has length 126 [2019-11-07 04:09:47,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:47,487 INFO L462 AbstractCegarLoop]: Abstraction has 1079 states and 1561 transitions. [2019-11-07 04:09:47,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:09:47,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1561 transitions. [2019-11-07 04:09:47,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-07 04:09:47,495 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:47,495 INFO L410 BasicCegarLoop]: trace histogram [5, 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] [2019-11-07 04:09:47,495 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:47,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:47,496 INFO L82 PathProgramCache]: Analyzing trace with hash -42944481, now seen corresponding path program 1 times [2019-11-07 04:09:47,496 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:47,496 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78538335] [2019-11-07 04:09:47,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:09:47,869 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78538335] [2019-11-07 04:09:47,869 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:47,869 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:09:47,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577328211] [2019-11-07 04:09:47,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:09:47,872 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:47,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:09:47,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:09:47,872 INFO L87 Difference]: Start difference. First operand 1079 states and 1561 transitions. Second operand 9 states. [2019-11-07 04:09:56,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:56,590 INFO L93 Difference]: Finished difference Result 2945 states and 4353 transitions. [2019-11-07 04:09:56,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 04:09:56,590 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2019-11-07 04:09:56,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:56,607 INFO L225 Difference]: With dead ends: 2945 [2019-11-07 04:09:56,607 INFO L226 Difference]: Without dead ends: 1981 [2019-11-07 04:09:56,614 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-11-07 04:09:56,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2019-11-07 04:09:56,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1932. [2019-11-07 04:09:56,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1932 states. [2019-11-07 04:09:56,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2756 transitions. [2019-11-07 04:09:56,771 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2756 transitions. Word has length 127 [2019-11-07 04:09:56,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:56,774 INFO L462 AbstractCegarLoop]: Abstraction has 1932 states and 2756 transitions. [2019-11-07 04:09:56,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:09:56,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2756 transitions. [2019-11-07 04:09:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-07 04:09:56,778 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:56,779 INFO L410 BasicCegarLoop]: trace histogram [5, 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] [2019-11-07 04:09:56,779 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:56,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:56,779 INFO L82 PathProgramCache]: Analyzing trace with hash -39693034, now seen corresponding path program 1 times [2019-11-07 04:09:56,780 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:56,780 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587672889] [2019-11-07 04:09:56,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:09:57,006 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587672889] [2019-11-07 04:09:57,006 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:57,007 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:09:57,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147697025] [2019-11-07 04:09:57,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:09:57,008 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:57,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:09:57,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:09:57,008 INFO L87 Difference]: Start difference. First operand 1932 states and 2756 transitions. Second operand 3 states. [2019-11-07 04:09:57,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:57,219 INFO L93 Difference]: Finished difference Result 5557 states and 8013 transitions. [2019-11-07 04:09:57,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:09:57,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2019-11-07 04:09:57,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:57,261 INFO L225 Difference]: With dead ends: 5557 [2019-11-07 04:09:57,261 INFO L226 Difference]: Without dead ends: 3744 [2019-11-07 04:09:57,272 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:09:57,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2019-11-07 04:09:57,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3732. [2019-11-07 04:09:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3732 states. [2019-11-07 04:09:57,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 5365 transitions. [2019-11-07 04:09:57,510 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 5365 transitions. Word has length 128 [2019-11-07 04:09:57,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:57,511 INFO L462 AbstractCegarLoop]: Abstraction has 3732 states and 5365 transitions. [2019-11-07 04:09:57,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:09:57,511 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 5365 transitions. [2019-11-07 04:09:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-07 04:09:57,515 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:57,515 INFO L410 BasicCegarLoop]: trace histogram [5, 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] [2019-11-07 04:09:57,516 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:57,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:57,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1230838178, now seen corresponding path program 1 times [2019-11-07 04:09:57,516 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:57,517 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752445457] [2019-11-07 04:09:57,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:09:57,849 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752445457] [2019-11-07 04:09:57,849 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:57,849 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:09:57,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394257148] [2019-11-07 04:09:57,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:09:57,850 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:57,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:09:57,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:09:57,851 INFO L87 Difference]: Start difference. First operand 3732 states and 5365 transitions. Second operand 6 states. [2019-11-07 04:10:02,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:02,494 INFO L93 Difference]: Finished difference Result 9952 states and 14864 transitions. [2019-11-07 04:10:02,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:10:02,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2019-11-07 04:10:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:02,567 INFO L225 Difference]: With dead ends: 9952 [2019-11-07 04:10:02,567 INFO L226 Difference]: Without dead ends: 8116 [2019-11-07 04:10:02,582 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:10:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8116 states. [2019-11-07 04:10:03,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8116 to 8029. [2019-11-07 04:10:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8029 states. [2019-11-07 04:10:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8029 states to 8029 states and 12094 transitions. [2019-11-07 04:10:03,163 INFO L78 Accepts]: Start accepts. Automaton has 8029 states and 12094 transitions. Word has length 129 [2019-11-07 04:10:03,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:03,164 INFO L462 AbstractCegarLoop]: Abstraction has 8029 states and 12094 transitions. [2019-11-07 04:10:03,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:10:03,164 INFO L276 IsEmpty]: Start isEmpty. Operand 8029 states and 12094 transitions. [2019-11-07 04:10:03,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-11-07 04:10:03,171 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:03,171 INFO L410 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:03,172 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:03,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:03,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1170189868, now seen corresponding path program 1 times [2019-11-07 04:10:03,172 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:03,173 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059640440] [2019-11-07 04:10:03,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:03,455 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:10:03,455 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059640440] [2019-11-07 04:10:03,456 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:03,457 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 04:10:03,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43268771] [2019-11-07 04:10:03,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 04:10:03,457 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:03,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 04:10:03,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:10:03,458 INFO L87 Difference]: Start difference. First operand 8029 states and 12094 transitions. Second operand 12 states. [2019-11-07 04:10:04,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:04,742 INFO L93 Difference]: Finished difference Result 16867 states and 25880 transitions. [2019-11-07 04:10:04,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:10:04,743 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 168 [2019-11-07 04:10:04,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:04,816 INFO L225 Difference]: With dead ends: 16867 [2019-11-07 04:10:04,817 INFO L226 Difference]: Without dead ends: 8965 [2019-11-07 04:10:04,853 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:10:04,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8965 states. [2019-11-07 04:10:05,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8965 to 8189. [2019-11-07 04:10:05,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8189 states. [2019-11-07 04:10:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8189 states to 8189 states and 12302 transitions. [2019-11-07 04:10:05,361 INFO L78 Accepts]: Start accepts. Automaton has 8189 states and 12302 transitions. Word has length 168 [2019-11-07 04:10:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:05,364 INFO L462 AbstractCegarLoop]: Abstraction has 8189 states and 12302 transitions. [2019-11-07 04:10:05,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 04:10:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 8189 states and 12302 transitions. [2019-11-07 04:10:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 04:10:05,372 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:05,373 INFO L410 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:05,373 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:05,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:05,374 INFO L82 PathProgramCache]: Analyzing trace with hash -882495742, now seen corresponding path program 1 times [2019-11-07 04:10:05,374 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:05,374 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273762609] [2019-11-07 04:10:05,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 04:10:05,585 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273762609] [2019-11-07 04:10:05,585 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:05,585 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:05,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660494128] [2019-11-07 04:10:05,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:05,586 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:05,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:05,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:05,587 INFO L87 Difference]: Start difference. First operand 8189 states and 12302 transitions. Second operand 4 states. [2019-11-07 04:10:07,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:07,485 INFO L93 Difference]: Finished difference Result 23704 states and 36237 transitions. [2019-11-07 04:10:07,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:10:07,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-11-07 04:10:07,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:07,591 INFO L225 Difference]: With dead ends: 23704 [2019-11-07 04:10:07,592 INFO L226 Difference]: Without dead ends: 15642 [2019-11-07 04:10:07,641 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:07,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15642 states.