java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:53,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:53,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:53,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:53,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:53,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:53,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:53,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:53,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:53,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:54,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:54,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:54,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:54,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:54,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:54,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:54,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:54,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:54,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:54,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:54,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:54,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:54,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:54,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:54,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:54,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:54,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:54,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:54,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:54,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:54,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:54,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:54,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:54,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:54,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:54,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:54,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:54,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:54,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:54,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:54,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:54,048 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 03:07:54,083 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:54,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:54,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:54,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:54,091 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:54,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:54,091 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:54,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:54,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:54,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:54,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:54,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:54,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:54,092 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:54,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:54,093 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:54,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:54,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:54,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:54,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:54,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:54,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:54,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:54,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:54,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:54,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:54,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:54,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:54,098 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 03:07:54,468 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:54,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:54,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:54,502 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:54,503 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:54,504 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product19.cil.c [2019-10-15 03:07:54,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a879a3d37/0741c6a752fc495592e3ba79a6732001/FLAGe1ad8c568 [2019-10-15 03:07:55,257 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:55,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product19.cil.c [2019-10-15 03:07:55,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a879a3d37/0741c6a752fc495592e3ba79a6732001/FLAGe1ad8c568 [2019-10-15 03:07:55,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a879a3d37/0741c6a752fc495592e3ba79a6732001 [2019-10-15 03:07:55,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:55,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:55,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:55,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:55,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:55,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:55" (1/1) ... [2019-10-15 03:07:55,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54803c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:55, skipping insertion in model container [2019-10-15 03:07:55,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:55" (1/1) ... [2019-10-15 03:07:55,482 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:55,583 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:56,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:56,335 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:56,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:56,617 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:56,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56 WrapperNode [2019-10-15 03:07:56,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:56,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:56,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:56,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:56,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (1/1) ... [2019-10-15 03:07:56,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:07:56,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:07:56,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:07:56,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:07:56,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (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 03:07:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:07:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:07:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:07:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:07:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:07:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:07:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:07:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:07:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:07:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:07:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:07:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:07:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:07:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:07:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:07:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:07:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:07:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:07:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:07:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:07:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:07:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:07:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:07:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:07:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:07:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:07:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:07:56,957 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:07:56,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:07:56,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:07:56,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:07:56,957 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:07:56,958 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:07:56,958 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:07:56,958 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:07:56,958 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:07:56,958 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:07:56,959 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:07:56,959 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:07:56,959 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:07:56,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:07:56,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:07:56,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:07:56,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:07:56,960 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:07:56,960 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:07:56,960 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:07:56,961 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:07:56,961 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:07:56,961 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:07:56,961 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:07:56,961 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:07:56,962 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:07:56,962 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:07:56,962 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:07:56,962 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:07:56,962 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:07:56,963 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:07:56,963 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:07:56,963 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:07:56,963 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:07:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:07:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:07:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:07:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:07:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:07:56,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:56,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:56,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:56,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:07:56,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:07:56,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:07:56,966 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:07:56,966 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:07:56,966 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:07:56,966 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:07:56,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:07:56,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:07:56,967 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:07:56,967 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:07:56,967 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:07:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:07:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:07:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:07:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:07:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:07:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:07:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:07:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:07:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:07:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:07:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:07:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:07:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:07:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:07:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:07:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:07:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:07:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:07:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:07:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:07:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:07:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:07:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:07:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:07:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:07:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:07:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:07:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:07:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:07:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:07:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:07:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:07:56,974 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:56,974 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:07:56,974 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:07:56,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:07:56,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:07:56,974 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:07:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:07:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:07:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:07:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:07:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:07:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:07:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:07:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:07:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:07:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:07:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:07:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:07:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:07:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:07:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:07:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:07:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:07:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:07:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:07:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:07:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:07:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:07:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:07:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:07:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:07:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:07:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:07:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:07:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:07:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:07:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:07:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:07:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:07:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:07:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:07:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:07:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:07:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:07:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:07:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:07:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:07:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:07:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:07:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:07:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:07:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:03,421 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:03,421 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:03,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:03 BoogieIcfgContainer [2019-10-15 03:08:03,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:03,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:03,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:03,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:03,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:55" (1/3) ... [2019-10-15 03:08:03,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecbc971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:03, skipping insertion in model container [2019-10-15 03:08:03,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:56" (2/3) ... [2019-10-15 03:08:03,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecbc971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:03, skipping insertion in model container [2019-10-15 03:08:03,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:03" (3/3) ... [2019-10-15 03:08:03,431 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product19.cil.c [2019-10-15 03:08:03,440 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:03,450 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:03,462 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:03,493 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:03,493 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:03,494 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:03,494 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:03,494 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:03,494 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:03,494 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:03,494 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:03,527 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states. [2019-10-15 03:08:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-15 03:08:03,547 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:03,548 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:03,550 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:03,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:03,556 INFO L82 PathProgramCache]: Analyzing trace with hash 805408432, now seen corresponding path program 1 times [2019-10-15 03:08:03,566 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:03,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25760589] [2019-10-15 03:08:03,566 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:03,567 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:03,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:04,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25760589] [2019-10-15 03:08:04,186 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:04,186 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:08:04,186 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170499327] [2019-10-15 03:08:04,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:08:04,192 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:04,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:08:04,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:04,211 INFO L87 Difference]: Start difference. First operand 569 states. Second operand 2 states. [2019-10-15 03:08:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:04,298 INFO L93 Difference]: Finished difference Result 472 states and 703 transitions. [2019-10-15 03:08:04,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:08:04,300 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-15 03:08:04,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:04,329 INFO L225 Difference]: With dead ends: 472 [2019-10-15 03:08:04,329 INFO L226 Difference]: Without dead ends: 438 [2019-10-15 03:08:04,335 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:04,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2019-10-15 03:08:04,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2019-10-15 03:08:04,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2019-10-15 03:08:04,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 652 transitions. [2019-10-15 03:08:04,439 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 652 transitions. Word has length 112 [2019-10-15 03:08:04,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:04,442 INFO L462 AbstractCegarLoop]: Abstraction has 438 states and 652 transitions. [2019-10-15 03:08:04,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:08:04,443 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 652 transitions. [2019-10-15 03:08:04,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 03:08:04,452 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:04,452 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:04,453 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:04,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:04,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2038950407, now seen corresponding path program 1 times [2019-10-15 03:08:04,453 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:04,454 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002569290] [2019-10-15 03:08:04,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:04,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:04,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:04,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002569290] [2019-10-15 03:08:04,927 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:04,928 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:04,928 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027685836] [2019-10-15 03:08:04,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:04,930 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:04,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:04,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:04,931 INFO L87 Difference]: Start difference. First operand 438 states and 652 transitions. Second operand 7 states. [2019-10-15 03:08:10,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:10,184 INFO L93 Difference]: Finished difference Result 1241 states and 1893 transitions. [2019-10-15 03:08:10,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:08:10,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-15 03:08:10,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:10,195 INFO L225 Difference]: With dead ends: 1241 [2019-10-15 03:08:10,195 INFO L226 Difference]: Without dead ends: 845 [2019-10-15 03:08:10,202 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:08:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2019-10-15 03:08:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 820. [2019-10-15 03:08:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2019-10-15 03:08:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1247 transitions. [2019-10-15 03:08:10,299 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1247 transitions. Word has length 113 [2019-10-15 03:08:10,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:10,300 INFO L462 AbstractCegarLoop]: Abstraction has 820 states and 1247 transitions. [2019-10-15 03:08:10,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:10,307 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1247 transitions. [2019-10-15 03:08:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 03:08:10,313 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:10,313 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:10,313 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:10,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1250569818, now seen corresponding path program 1 times [2019-10-15 03:08:10,314 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:10,314 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343444977] [2019-10-15 03:08:10,314 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:10,314 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:10,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:10,621 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343444977] [2019-10-15 03:08:10,621 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:10,622 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:10,622 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903682851] [2019-10-15 03:08:10,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:10,625 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:10,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:10,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:10,626 INFO L87 Difference]: Start difference. First operand 820 states and 1247 transitions. Second operand 4 states. [2019-10-15 03:08:13,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:13,904 INFO L93 Difference]: Finished difference Result 2444 states and 3814 transitions. [2019-10-15 03:08:13,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:13,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-15 03:08:13,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:13,923 INFO L225 Difference]: With dead ends: 2444 [2019-10-15 03:08:13,924 INFO L226 Difference]: Without dead ends: 1666 [2019-10-15 03:08:13,938 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2019-10-15 03:08:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1568. [2019-10-15 03:08:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2019-10-15 03:08:14,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2433 transitions. [2019-10-15 03:08:14,150 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2433 transitions. Word has length 117 [2019-10-15 03:08:14,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:14,154 INFO L462 AbstractCegarLoop]: Abstraction has 1568 states and 2433 transitions. [2019-10-15 03:08:14,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:14,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2433 transitions. [2019-10-15 03:08:14,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:08:14,163 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:14,163 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:14,164 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:14,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:14,164 INFO L82 PathProgramCache]: Analyzing trace with hash -114542382, now seen corresponding path program 1 times [2019-10-15 03:08:14,165 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:14,165 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753022347] [2019-10-15 03:08:14,166 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:14,166 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:14,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:14,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753022347] [2019-10-15 03:08:14,453 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:14,454 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:14,454 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42896146] [2019-10-15 03:08:14,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:14,455 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:14,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:14,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:14,456 INFO L87 Difference]: Start difference. First operand 1568 states and 2433 transitions. Second operand 4 states. [2019-10-15 03:08:16,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:16,558 INFO L93 Difference]: Finished difference Result 4635 states and 7354 transitions. [2019-10-15 03:08:16,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:16,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-15 03:08:16,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:16,590 INFO L225 Difference]: With dead ends: 4635 [2019-10-15 03:08:16,590 INFO L226 Difference]: Without dead ends: 3110 [2019-10-15 03:08:16,601 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:16,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2019-10-15 03:08:16,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 2989. [2019-10-15 03:08:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2989 states. [2019-10-15 03:08:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 4706 transitions. [2019-10-15 03:08:16,865 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 4706 transitions. Word has length 118 [2019-10-15 03:08:16,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:16,867 INFO L462 AbstractCegarLoop]: Abstraction has 2989 states and 4706 transitions. [2019-10-15 03:08:16,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:16,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 4706 transitions. [2019-10-15 03:08:16,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:08:16,872 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:16,872 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:16,872 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:16,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:16,873 INFO L82 PathProgramCache]: Analyzing trace with hash 742573672, now seen corresponding path program 1 times [2019-10-15 03:08:16,873 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:16,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770578249] [2019-10-15 03:08:16,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:16,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:16,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:17,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770578249] [2019-10-15 03:08:17,088 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:17,088 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:17,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092846258] [2019-10-15 03:08:17,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:17,090 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:17,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:17,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:17,092 INFO L87 Difference]: Start difference. First operand 2989 states and 4706 transitions. Second operand 4 states. [2019-10-15 03:08:19,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:19,383 INFO L93 Difference]: Finished difference Result 8950 states and 14510 transitions. [2019-10-15 03:08:19,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:19,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-15 03:08:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:19,427 INFO L225 Difference]: With dead ends: 8950 [2019-10-15 03:08:19,427 INFO L226 Difference]: Without dead ends: 6006 [2019-10-15 03:08:19,445 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:19,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6006 states. [2019-10-15 03:08:19,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6006 to 5840. [2019-10-15 03:08:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5840 states. [2019-10-15 03:08:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 9368 transitions. [2019-10-15 03:08:19,794 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 9368 transitions. Word has length 119 [2019-10-15 03:08:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:19,795 INFO L462 AbstractCegarLoop]: Abstraction has 5840 states and 9368 transitions. [2019-10-15 03:08:19,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:19,795 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 9368 transitions. [2019-10-15 03:08:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:08:19,798 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:19,799 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:19,799 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:19,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:19,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1543371476, now seen corresponding path program 1 times [2019-10-15 03:08:19,800 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:19,800 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223718929] [2019-10-15 03:08:19,800 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:19,803 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:19,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:19,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223718929] [2019-10-15 03:08:19,979 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:19,980 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:19,980 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907150396] [2019-10-15 03:08:19,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:19,981 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:19,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:19,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:19,981 INFO L87 Difference]: Start difference. First operand 5840 states and 9368 transitions. Second operand 4 states. [2019-10-15 03:08:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:22,757 INFO L93 Difference]: Finished difference Result 17605 states and 29553 transitions. [2019-10-15 03:08:22,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:22,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-15 03:08:22,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:22,877 INFO L225 Difference]: With dead ends: 17605 [2019-10-15 03:08:22,884 INFO L226 Difference]: Without dead ends: 11814 [2019-10-15 03:08:22,926 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11814 states. [2019-10-15 03:08:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 11559. [2019-10-15 03:08:23,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11559 states. [2019-10-15 03:08:23,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11559 states to 11559 states and 19102 transitions. [2019-10-15 03:08:23,858 INFO L78 Accepts]: Start accepts. Automaton has 11559 states and 19102 transitions. Word has length 120 [2019-10-15 03:08:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:23,858 INFO L462 AbstractCegarLoop]: Abstraction has 11559 states and 19102 transitions. [2019-10-15 03:08:23,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:23,859 INFO L276 IsEmpty]: Start isEmpty. Operand 11559 states and 19102 transitions. [2019-10-15 03:08:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:08:23,862 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:23,862 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:23,863 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:23,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:23,863 INFO L82 PathProgramCache]: Analyzing trace with hash 598303530, now seen corresponding path program 1 times [2019-10-15 03:08:23,863 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:23,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368244931] [2019-10-15 03:08:23,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:23,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:23,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:24,069 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368244931] [2019-10-15 03:08:24,069 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:24,069 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:24,069 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853745946] [2019-10-15 03:08:24,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:24,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:24,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:24,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:24,071 INFO L87 Difference]: Start difference. First operand 11559 states and 19102 transitions. Second operand 4 states. [2019-10-15 03:08:27,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:27,292 INFO L93 Difference]: Finished difference Result 34992 states and 62281 transitions. [2019-10-15 03:08:27,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:27,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-15 03:08:27,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:28,431 INFO L225 Difference]: With dead ends: 34992 [2019-10-15 03:08:28,432 INFO L226 Difference]: Without dead ends: 23478 [2019-10-15 03:08:28,479 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:28,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23478 states.