/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_spec13_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:06:59,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:06:59,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:06:59,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:06:59,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:06:59,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:06:59,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:06:59,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:06:59,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:06:59,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:06:59,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:06:59,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:06:59,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:06:59,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:06:59,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:06:59,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:06:59,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:06:59,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:06:59,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:06:59,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:06:59,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:06:59,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:06:59,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:06:59,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:06:59,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:06:59,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:06:59,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:06:59,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:06:59,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:06:59,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:06:59,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:06:59,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:06:59,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:06:59,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:06:59,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:06:59,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:06:59,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:06:59,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:06:59,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:06:59,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:06:59,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:06:59,868 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 04:06:59,883 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:06:59,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:06:59,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:06:59,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:06:59,885 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:06:59,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:06:59,885 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:06:59,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:06:59,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:06:59,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:06:59,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:06:59,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:06:59,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:06:59,886 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:06:59,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:06:59,887 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:06:59,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:06:59,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:06:59,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:06:59,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:06:59,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:06:59,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:06:59,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:06:59,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:06:59,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:06:59,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:06:59,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:06:59,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:06:59,889 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 04:07:00,171 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:07:00,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:07:00,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:07:00,189 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:07:00,189 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:07:00,190 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c [2019-11-07 04:07:00,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5fcc5a80/b5b5596b5da247ecaa569541b450eb6f/FLAG504a5fde0 [2019-11-07 04:07:00,871 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:07:00,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c [2019-11-07 04:07:00,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5fcc5a80/b5b5596b5da247ecaa569541b450eb6f/FLAG504a5fde0 [2019-11-07 04:07:01,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5fcc5a80/b5b5596b5da247ecaa569541b450eb6f [2019-11-07 04:07:01,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:07:01,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:07:01,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:07:01,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:07:01,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:07:01,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:07:01" (1/1) ... [2019-11-07 04:07:01,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a316cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:01, skipping insertion in model container [2019-11-07 04:07:01,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:07:01" (1/1) ... [2019-11-07 04:07:01,175 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:07:01,339 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:07:02,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:07:02,267 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:07:02,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:07:02,451 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:07:02,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:02 WrapperNode [2019-11-07 04:07:02,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:07:02,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:07:02,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:07:02,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:07:02,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:02" (1/1) ... [2019-11-07 04:07:02,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:02" (1/1) ... [2019-11-07 04:07:02,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:02" (1/1) ... [2019-11-07 04:07:02,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:02" (1/1) ... [2019-11-07 04:07:02,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:02" (1/1) ... [2019-11-07 04:07:02,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:02" (1/1) ... [2019-11-07 04:07:02,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:02" (1/1) ... [2019-11-07 04:07:02,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:07:02,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:07:02,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:07:02,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:07:02,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:02" (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 04:07:02,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:07:02,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:07:02,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:07:02,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:07:02,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:07:02,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:07:02,738 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:07:02,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:07:02,739 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:07:02,739 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:07:02,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:07:02,739 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:07:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:07:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:07:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-11-07 04:07:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-11-07 04:07:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:07:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:07:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:07:02,742 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:07:02,742 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:07:02,742 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:07:02,742 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:07:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:07:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:07:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:07:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:07:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:07:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:07:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:07:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:07:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:07:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:07:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:07:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:07:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:07:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:07:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:07:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:07:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:07:02,747 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:07:02,747 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:07:02,747 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:07:02,747 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:07:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:07:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:07:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:07:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:07:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:07:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:07:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:07:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:07:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:07:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:07:02,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:07:02,750 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:07:02,750 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:07:02,750 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:07:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:07:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:07:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-11-07 04:07:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:07:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-11-07 04:07:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:07:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:07:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:07:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:07:02,753 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:07:02,753 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:07:02,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:07:02,753 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:07:02,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:07:02,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:07:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:07:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:07:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:07:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:07:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:07:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:07:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:07:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:07:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:07:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:07:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:07:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:07:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:07:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:07:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:07:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:07:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:07:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:07:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:07:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-11-07 04:07:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:07:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-11-07 04:07:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:07:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:07:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:07:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:07:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:07:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:07:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:07:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:07:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:07:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:07:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:07:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:07:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:07:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:07:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:07:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:07:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:07:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:07:02,761 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:07:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:07:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:07:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:07:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:07:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:07:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:07:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:07:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:07:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:07:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:07:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:07:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:07:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:07:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:07:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:07:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:07:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:07:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:07:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:07:02,766 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:07:02,766 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:07:02,766 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:07:02,766 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:07:02,766 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:07:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:07:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:07:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:07:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:07:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:07:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:07:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:07:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:07:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-11-07 04:07:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-11-07 04:07:02,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:07:02,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:07:02,769 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:07:02,769 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:07:02,769 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:07:02,769 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:07:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:07:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:07:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:07:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:07:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:07:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:07:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:07:02,770 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:07:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:07:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:07:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:07:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:07:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:07:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:07:02,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:07:07,998 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:07:07,999 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:07:08,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:07:08 BoogieIcfgContainer [2019-11-07 04:07:08,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:07:08,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:07:08,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:07:08,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:07:08,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:07:01" (1/3) ... [2019-11-07 04:07:08,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b46c23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:07:08, skipping insertion in model container [2019-11-07 04:07:08,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:02" (2/3) ... [2019-11-07 04:07:08,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b46c23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:07:08, skipping insertion in model container [2019-11-07 04:07:08,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:07:08" (3/3) ... [2019-11-07 04:07:08,009 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product30.cil.c [2019-11-07 04:07:08,019 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:07:08,028 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:07:08,040 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:07:08,071 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:07:08,071 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:07:08,071 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:07:08,071 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:07:08,072 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:07:08,072 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:07:08,072 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:07:08,072 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:07:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states. [2019-11-07 04:07:08,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 04:07:08,124 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:08,125 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:08,128 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:08,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:08,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1446989103, now seen corresponding path program 1 times [2019-11-07 04:07:08,146 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:08,146 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636891868] [2019-11-07 04:07:08,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-07 04:07:08,887 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636891868] [2019-11-07 04:07:08,888 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139618079] [2019-11-07 04:07:08,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:09,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-07 04:07:09,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:07:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:07:09,718 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:07:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:09,924 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:07:09,924 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-11-07 04:07:09,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931980715] [2019-11-07 04:07:09,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:07:09,935 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:09,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:07:09,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:07:09,953 INFO L87 Difference]: Start difference. First operand 611 states. Second operand 4 states. [2019-11-07 04:07:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:11,279 INFO L93 Difference]: Finished difference Result 1866 states and 2887 transitions. [2019-11-07 04:07:11,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:07:11,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2019-11-07 04:07:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:11,320 INFO L225 Difference]: With dead ends: 1866 [2019-11-07 04:07:11,321 INFO L226 Difference]: Without dead ends: 1374 [2019-11-07 04:07:11,331 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:07:11,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2019-11-07 04:07:11,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1282. [2019-11-07 04:07:11,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1282 states. [2019-11-07 04:07:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1964 transitions. [2019-11-07 04:07:11,537 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1964 transitions. Word has length 95 [2019-11-07 04:07:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:11,538 INFO L462 AbstractCegarLoop]: Abstraction has 1282 states and 1964 transitions. [2019-11-07 04:07:11,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:07:11,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1964 transitions. [2019-11-07 04:07:11,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-07 04:07:11,549 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:11,550 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:11,750 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:11,751 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:11,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:11,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1536710755, now seen corresponding path program 1 times [2019-11-07 04:07:11,752 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:11,753 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339530216] [2019-11-07 04:07:11,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:12,190 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339530216] [2019-11-07 04:07:12,191 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:12,191 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:07:12,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573712663] [2019-11-07 04:07:12,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:07:12,195 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:12,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:07:12,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:07:12,200 INFO L87 Difference]: Start difference. First operand 1282 states and 1964 transitions. Second operand 10 states. [2019-11-07 04:07:13,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:13,714 INFO L93 Difference]: Finished difference Result 2724 states and 4187 transitions. [2019-11-07 04:07:13,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 04:07:13,715 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 136 [2019-11-07 04:07:13,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:13,729 INFO L225 Difference]: With dead ends: 2724 [2019-11-07 04:07:13,729 INFO L226 Difference]: Without dead ends: 1479 [2019-11-07 04:07:13,738 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-07 04:07:13,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2019-11-07 04:07:13,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1471. [2019-11-07 04:07:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1471 states. [2019-11-07 04:07:13,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2234 transitions. [2019-11-07 04:07:13,841 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2234 transitions. Word has length 136 [2019-11-07 04:07:13,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:13,842 INFO L462 AbstractCegarLoop]: Abstraction has 1471 states and 2234 transitions. [2019-11-07 04:07:13,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:07:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2234 transitions. [2019-11-07 04:07:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-11-07 04:07:13,847 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:13,847 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:13,848 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:13,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:13,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1792045812, now seen corresponding path program 1 times [2019-11-07 04:07:13,848 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:13,849 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517277742] [2019-11-07 04:07:13,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:14,139 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517277742] [2019-11-07 04:07:14,139 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:14,139 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:07:14,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388054022] [2019-11-07 04:07:14,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:07:14,141 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:14,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:07:14,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:07:14,141 INFO L87 Difference]: Start difference. First operand 1471 states and 2234 transitions. Second operand 9 states. [2019-11-07 04:07:19,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:19,766 INFO L93 Difference]: Finished difference Result 4369 states and 6726 transitions. [2019-11-07 04:07:19,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-07 04:07:19,766 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2019-11-07 04:07:19,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:19,791 INFO L225 Difference]: With dead ends: 4369 [2019-11-07 04:07:19,791 INFO L226 Difference]: Without dead ends: 2938 [2019-11-07 04:07:19,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-11-07 04:07:19,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2019-11-07 04:07:19,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2822. [2019-11-07 04:07:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2019-11-07 04:07:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 4344 transitions. [2019-11-07 04:07:19,979 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 4344 transitions. Word has length 137 [2019-11-07 04:07:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:19,980 INFO L462 AbstractCegarLoop]: Abstraction has 2822 states and 4344 transitions. [2019-11-07 04:07:19,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:07:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 4344 transitions. [2019-11-07 04:07:19,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-07 04:07:19,987 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:19,987 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:19,988 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:19,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:19,988 INFO L82 PathProgramCache]: Analyzing trace with hash 173874336, now seen corresponding path program 1 times [2019-11-07 04:07:19,988 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:19,988 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61184948] [2019-11-07 04:07:19,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:20,209 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61184948] [2019-11-07 04:07:20,209 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:20,210 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:07:20,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374862123] [2019-11-07 04:07:20,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:07:20,211 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:20,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:07:20,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:20,212 INFO L87 Difference]: Start difference. First operand 2822 states and 4344 transitions. Second operand 7 states. [2019-11-07 04:07:20,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:20,369 INFO L93 Difference]: Finished difference Result 4597 states and 7148 transitions. [2019-11-07 04:07:20,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:07:20,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2019-11-07 04:07:20,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:20,400 INFO L225 Difference]: With dead ends: 4597 [2019-11-07 04:07:20,400 INFO L226 Difference]: Without dead ends: 2892 [2019-11-07 04:07:20,414 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:20,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2019-11-07 04:07:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2864. [2019-11-07 04:07:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2019-11-07 04:07:20,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4404 transitions. [2019-11-07 04:07:20,615 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4404 transitions. Word has length 141 [2019-11-07 04:07:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:20,618 INFO L462 AbstractCegarLoop]: Abstraction has 2864 states and 4404 transitions. [2019-11-07 04:07:20,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:07:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4404 transitions. [2019-11-07 04:07:20,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-07 04:07:20,630 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:20,630 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:20,630 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:20,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:20,631 INFO L82 PathProgramCache]: Analyzing trace with hash 756657108, now seen corresponding path program 1 times [2019-11-07 04:07:20,631 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:20,631 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130376398] [2019-11-07 04:07:20,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:20,928 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130376398] [2019-11-07 04:07:20,929 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:20,929 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:07:20,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736837255] [2019-11-07 04:07:20,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:07:20,930 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:20,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:07:20,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:20,931 INFO L87 Difference]: Start difference. First operand 2864 states and 4404 transitions. Second operand 7 states. [2019-11-07 04:07:21,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:21,089 INFO L93 Difference]: Finished difference Result 4655 states and 7224 transitions. [2019-11-07 04:07:21,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:07:21,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2019-11-07 04:07:21,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:21,119 INFO L225 Difference]: With dead ends: 4655 [2019-11-07 04:07:21,119 INFO L226 Difference]: Without dead ends: 2922 [2019-11-07 04:07:21,133 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:21,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2019-11-07 04:07:21,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2870. [2019-11-07 04:07:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2870 states. [2019-11-07 04:07:21,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4410 transitions. [2019-11-07 04:07:21,285 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4410 transitions. Word has length 142 [2019-11-07 04:07:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:21,289 INFO L462 AbstractCegarLoop]: Abstraction has 2870 states and 4410 transitions. [2019-11-07 04:07:21,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:07:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4410 transitions. [2019-11-07 04:07:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-07 04:07:21,296 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:21,296 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:21,296 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:21,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:21,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1741600244, now seen corresponding path program 1 times [2019-11-07 04:07:21,297 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:21,297 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946349554] [2019-11-07 04:07:21,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:21,508 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946349554] [2019-11-07 04:07:21,512 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:21,512 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:07:21,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389255365] [2019-11-07 04:07:21,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:07:21,514 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:21,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:07:21,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:21,515 INFO L87 Difference]: Start difference. First operand 2870 states and 4410 transitions. Second operand 7 states. [2019-11-07 04:07:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:21,678 INFO L93 Difference]: Finished difference Result 4665 states and 7234 transitions. [2019-11-07 04:07:21,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:07:21,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2019-11-07 04:07:21,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:21,703 INFO L225 Difference]: With dead ends: 4665 [2019-11-07 04:07:21,703 INFO L226 Difference]: Without dead ends: 2928 [2019-11-07 04:07:21,715 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2019-11-07 04:07:21,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2876. [2019-11-07 04:07:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2876 states. [2019-11-07 04:07:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 4416 transitions. [2019-11-07 04:07:21,865 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 4416 transitions. Word has length 142 [2019-11-07 04:07:21,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:21,867 INFO L462 AbstractCegarLoop]: Abstraction has 2876 states and 4416 transitions. [2019-11-07 04:07:21,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:07:21,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 4416 transitions. [2019-11-07 04:07:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-07 04:07:21,872 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:21,872 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:21,872 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:21,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:21,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1275886392, now seen corresponding path program 1 times [2019-11-07 04:07:21,873 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:21,873 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039705974] [2019-11-07 04:07:21,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:22,237 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039705974] [2019-11-07 04:07:22,238 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:22,238 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:07:22,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11958780] [2019-11-07 04:07:22,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:07:22,239 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:22,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:07:22,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:22,240 INFO L87 Difference]: Start difference. First operand 2876 states and 4416 transitions. Second operand 7 states. [2019-11-07 04:07:26,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:26,275 INFO L93 Difference]: Finished difference Result 6498 states and 10201 transitions. [2019-11-07 04:07:26,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:07:26,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2019-11-07 04:07:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:26,311 INFO L225 Difference]: With dead ends: 6498 [2019-11-07 04:07:26,312 INFO L226 Difference]: Without dead ends: 4507 [2019-11-07 04:07:26,328 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:07:26,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2019-11-07 04:07:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 4307. [2019-11-07 04:07:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2019-11-07 04:07:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 6517 transitions. [2019-11-07 04:07:26,548 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 6517 transitions. Word has length 145 [2019-11-07 04:07:26,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:26,549 INFO L462 AbstractCegarLoop]: Abstraction has 4307 states and 6517 transitions. [2019-11-07 04:07:26,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:07:26,549 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 6517 transitions. [2019-11-07 04:07:26,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-07 04:07:26,554 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:26,554 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:26,555 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:26,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:26,555 INFO L82 PathProgramCache]: Analyzing trace with hash 338848400, now seen corresponding path program 1 times [2019-11-07 04:07:26,556 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:26,556 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347899078] [2019-11-07 04:07:26,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:26,785 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347899078] [2019-11-07 04:07:26,786 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:26,786 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:07:26,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083912569] [2019-11-07 04:07:26,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:07:26,788 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:26,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:07:26,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:07:26,788 INFO L87 Difference]: Start difference. First operand 4307 states and 6517 transitions. Second operand 9 states. [2019-11-07 04:07:27,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:27,219 INFO L93 Difference]: Finished difference Result 8185 states and 12666 transitions. [2019-11-07 04:07:27,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:07:27,220 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 148 [2019-11-07 04:07:27,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:27,269 INFO L225 Difference]: With dead ends: 8185 [2019-11-07 04:07:27,269 INFO L226 Difference]: Without dead ends: 4715 [2019-11-07 04:07:27,297 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:07:27,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2019-11-07 04:07:27,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4715. [2019-11-07 04:07:27,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4715 states. [2019-11-07 04:07:27,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 7125 transitions. [2019-11-07 04:07:27,514 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 7125 transitions. Word has length 148 [2019-11-07 04:07:27,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:27,514 INFO L462 AbstractCegarLoop]: Abstraction has 4715 states and 7125 transitions. [2019-11-07 04:07:27,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:07:27,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 7125 transitions. [2019-11-07 04:07:27,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 04:07:27,520 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:27,520 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:27,520 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:27,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:27,521 INFO L82 PathProgramCache]: Analyzing trace with hash 2128988024, now seen corresponding path program 1 times [2019-11-07 04:07:27,522 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:27,522 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085728646] [2019-11-07 04:07:27,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:27,922 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085728646] [2019-11-07 04:07:27,923 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:27,923 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:07:27,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781751184] [2019-11-07 04:07:27,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:07:27,925 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:27,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:07:27,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:07:27,926 INFO L87 Difference]: Start difference. First operand 4715 states and 7125 transitions. Second operand 6 states.