java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:15,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:15,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:15,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:15,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:15,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:15,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:15,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:15,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:15,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:15,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:15,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:15,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:15,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:15,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:15,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:15,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:15,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:15,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:15,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:15,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:15,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:15,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:15,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:15,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:15,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:15,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:15,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:15,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:15,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:15,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:15,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:15,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:15,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:15,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:15,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:15,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:15,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:15,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:15,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:15,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:15,904 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 03:07:15,920 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:15,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:15,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:15,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:15,922 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:15,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:15,922 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:15,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:15,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:15,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:15,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:15,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:15,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:15,924 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:15,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:15,924 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:15,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:15,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:15,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:15,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:15,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:15,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:15,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:15,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:15,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:15,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:15,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:15,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:15,927 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 03:07:16,284 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:16,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:16,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:16,314 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:16,314 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:16,315 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c [2019-10-15 03:07:16,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ff8b75a/0dfc4e4889094313b6a8094469426485/FLAG813ea506a [2019-10-15 03:07:17,056 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:17,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c [2019-10-15 03:07:17,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ff8b75a/0dfc4e4889094313b6a8094469426485/FLAG813ea506a [2019-10-15 03:07:17,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ff8b75a/0dfc4e4889094313b6a8094469426485 [2019-10-15 03:07:17,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:17,250 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:17,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:17,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:17,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:17,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:17" (1/1) ... [2019-10-15 03:07:17,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66cd572e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:17, skipping insertion in model container [2019-10-15 03:07:17,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:17" (1/1) ... [2019-10-15 03:07:17,275 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:17,375 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:18,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:18,259 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:18,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:18,602 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:18,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:18 WrapperNode [2019-10-15 03:07:18,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:18,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:18,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:18,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:18,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:18" (1/1) ... [2019-10-15 03:07:18,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:18" (1/1) ... [2019-10-15 03:07:18,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:18" (1/1) ... [2019-10-15 03:07:18,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:18" (1/1) ... [2019-10-15 03:07:18,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:18" (1/1) ... [2019-10-15 03:07:18,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:18" (1/1) ... [2019-10-15 03:07:18,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:18" (1/1) ... [2019-10-15 03:07:18,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:07:18,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:07:18,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:07:18,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:07:18,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:18" (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 03:07:18,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:07:18,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:07:18,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:18,921 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:07:18,921 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:07:18,921 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:07:18,921 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:07:18,922 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:07:18,922 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:07:18,922 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:07:18,922 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:07:18,923 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:07:18,923 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:07:18,923 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:07:18,923 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:07:18,923 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:07:18,924 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:07:18,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:07:18,924 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:07:18,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:07:18,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:07:18,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:07:18,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:07:18,926 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:07:18,926 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:07:18,926 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:07:18,926 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:07:18,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:18,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:18,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:18,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:18,927 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:07:18,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:07:18,928 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:07:18,928 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:07:18,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:07:18,928 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:07:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:07:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:07:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:07:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:07:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:07:18,930 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:07:18,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:07:18,930 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:07:18,930 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:07:18,930 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:07:18,931 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:07:18,931 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:07:18,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:07:18,931 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:07:18,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:07:18,931 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:07:18,931 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:07:18,932 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:07:18,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:07:18,932 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:07:18,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:07:18,932 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:07:18,932 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:07:18,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:07:18,933 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:07:18,933 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:07:18,933 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:18,933 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:07:18,933 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:07:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 03:07:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:07:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 03:07:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:07:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:07:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:07:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:07:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:07:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:07:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:07:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:07:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:07:18,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:07:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:07:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:07:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:07:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:07:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:07:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:07:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:07:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:07:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:07:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:07:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:07:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:07:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:07:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:07:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:07:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:07:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:07:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:07:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:07:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:07:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:07:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:07:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:07:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:07:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:07:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:07:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:07:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:07:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:07:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:07:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:07:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:07:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:07:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:07:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:07:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:07:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:07:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:07:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:07:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:07:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:07:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:07:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:07:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:07:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:07:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:07:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:07:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:07:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:07:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:07:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:07:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:07:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:07:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:07:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:07:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:07:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:07:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:07:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:07:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:07:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:07:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:07:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:07:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:07:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:07:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:07:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:07:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 03:07:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 03:07:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:07:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:07:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:07:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:07:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:07:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:07:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:07:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:07:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:07:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:07:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:07:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:07:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:07:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:07:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:07:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:07:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:07:25,574 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:07:25,575 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:07:25,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:25 BoogieIcfgContainer [2019-10-15 03:07:25,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:07:25,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:07:25,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:07:25,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:07:25,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:17" (1/3) ... [2019-10-15 03:07:25,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd087f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:25, skipping insertion in model container [2019-10-15 03:07:25,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:18" (2/3) ... [2019-10-15 03:07:25,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd087f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:25, skipping insertion in model container [2019-10-15 03:07:25,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:25" (3/3) ... [2019-10-15 03:07:25,586 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product28.cil.c [2019-10-15 03:07:25,596 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:07:25,606 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:07:25,619 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:07:25,662 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:07:25,662 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:07:25,663 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:07:25,663 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:07:25,663 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:07:25,663 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:07:25,663 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:07:25,663 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:07:25,699 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states. [2019-10-15 03:07:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 03:07:25,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:25,715 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:25,717 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:25,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:25,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1234480511, now seen corresponding path program 1 times [2019-10-15 03:07:25,797 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:25,797 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277685067] [2019-10-15 03:07:25,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:25,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:25,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:26,397 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 03:07:26,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277685067] [2019-10-15 03:07:26,399 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:26,399 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:07:26,400 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211419954] [2019-10-15 03:07:26,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:07:26,408 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:26,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:07:26,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:07:26,426 INFO L87 Difference]: Start difference. First operand 592 states. Second operand 2 states. [2019-10-15 03:07:26,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:26,505 INFO L93 Difference]: Finished difference Result 495 states and 732 transitions. [2019-10-15 03:07:26,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:07:26,507 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 97 [2019-10-15 03:07:26,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:26,537 INFO L225 Difference]: With dead ends: 495 [2019-10-15 03:07:26,537 INFO L226 Difference]: Without dead ends: 461 [2019-10-15 03:07:26,543 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 03:07:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2019-10-15 03:07:26,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2019-10-15 03:07:26,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2019-10-15 03:07:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 681 transitions. [2019-10-15 03:07:26,650 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 681 transitions. Word has length 97 [2019-10-15 03:07:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:26,652 INFO L462 AbstractCegarLoop]: Abstraction has 461 states and 681 transitions. [2019-10-15 03:07:26,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:07:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 681 transitions. [2019-10-15 03:07:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 03:07:26,658 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:26,659 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:26,659 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:26,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:26,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1657051741, now seen corresponding path program 1 times [2019-10-15 03:07:26,660 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:26,660 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316675513] [2019-10-15 03:07:26,660 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:26,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:26,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:27,070 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 03:07:27,070 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316675513] [2019-10-15 03:07:27,071 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:27,071 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:07:27,072 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869210603] [2019-10-15 03:07:27,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:07:27,074 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:27,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:07:27,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:07:27,079 INFO L87 Difference]: Start difference. First operand 461 states and 681 transitions. Second operand 9 states. [2019-10-15 03:07:34,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:34,489 INFO L93 Difference]: Finished difference Result 1244 states and 1879 transitions. [2019-10-15 03:07:34,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-15 03:07:34,490 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-10-15 03:07:34,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:34,500 INFO L225 Difference]: With dead ends: 1244 [2019-10-15 03:07:34,501 INFO L226 Difference]: Without dead ends: 836 [2019-10-15 03:07:34,510 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-10-15 03:07:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2019-10-15 03:07:34,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 805. [2019-10-15 03:07:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2019-10-15 03:07:34,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1178 transitions. [2019-10-15 03:07:34,598 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1178 transitions. Word has length 98 [2019-10-15 03:07:34,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:34,598 INFO L462 AbstractCegarLoop]: Abstraction has 805 states and 1178 transitions. [2019-10-15 03:07:34,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:07:34,599 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1178 transitions. [2019-10-15 03:07:34,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 03:07:34,602 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:34,603 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:34,603 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:34,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:34,604 INFO L82 PathProgramCache]: Analyzing trace with hash 112093531, now seen corresponding path program 1 times [2019-10-15 03:07:34,604 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:34,604 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049962529] [2019-10-15 03:07:34,604 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:34,605 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:34,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:34,802 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 03:07:34,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049962529] [2019-10-15 03:07:34,803 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:34,803 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:07:34,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662626378] [2019-10-15 03:07:34,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:07:34,806 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:34,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:07:34,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:07:34,807 INFO L87 Difference]: Start difference. First operand 805 states and 1178 transitions. Second operand 3 states. [2019-10-15 03:07:34,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:34,933 INFO L93 Difference]: Finished difference Result 2301 states and 3417 transitions. [2019-10-15 03:07:34,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:07:34,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2019-10-15 03:07:34,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:34,950 INFO L225 Difference]: With dead ends: 2301 [2019-10-15 03:07:34,950 INFO L226 Difference]: Without dead ends: 1551 [2019-10-15 03:07:34,956 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:07:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2019-10-15 03:07:35,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1544. [2019-10-15 03:07:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2019-10-15 03:07:35,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2284 transitions. [2019-10-15 03:07:35,066 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2284 transitions. Word has length 99 [2019-10-15 03:07:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:35,067 INFO L462 AbstractCegarLoop]: Abstraction has 1544 states and 2284 transitions. [2019-10-15 03:07:35,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:07:35,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2284 transitions. [2019-10-15 03:07:35,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 03:07:35,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:35,070 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:35,071 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:35,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:35,071 INFO L82 PathProgramCache]: Analyzing trace with hash -820461140, now seen corresponding path program 1 times [2019-10-15 03:07:35,072 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:35,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844885728] [2019-10-15 03:07:35,072 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:35,072 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:35,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:35,551 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 03:07:35,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844885728] [2019-10-15 03:07:35,552 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:35,552 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:07:35,552 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671573541] [2019-10-15 03:07:35,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:07:35,553 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:35,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:07:35,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:07:35,554 INFO L87 Difference]: Start difference. First operand 1544 states and 2284 transitions. Second operand 6 states. [2019-10-15 03:07:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:40,213 INFO L93 Difference]: Finished difference Result 4893 states and 7401 transitions. [2019-10-15 03:07:40,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:07:40,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2019-10-15 03:07:40,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:40,243 INFO L225 Difference]: With dead ends: 4893 [2019-10-15 03:07:40,244 INFO L226 Difference]: Without dead ends: 3405 [2019-10-15 03:07:40,252 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:40,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2019-10-15 03:07:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 3086. [2019-10-15 03:07:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3086 states. [2019-10-15 03:07:40,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 4667 transitions. [2019-10-15 03:07:40,460 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 4667 transitions. Word has length 100 [2019-10-15 03:07:40,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:40,461 INFO L462 AbstractCegarLoop]: Abstraction has 3086 states and 4667 transitions. [2019-10-15 03:07:40,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:07:40,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 4667 transitions. [2019-10-15 03:07:40,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 03:07:40,469 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:40,469 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:40,470 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:40,470 INFO L82 PathProgramCache]: Analyzing trace with hash -439398311, now seen corresponding path program 1 times [2019-10-15 03:07:40,470 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:40,471 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606663398] [2019-10-15 03:07:40,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:40,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:40,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:07:40,825 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606663398] [2019-10-15 03:07:40,826 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:40,826 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:07:40,827 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957080218] [2019-10-15 03:07:40,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:07:40,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:40,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:07:40,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:07:40,830 INFO L87 Difference]: Start difference. First operand 3086 states and 4667 transitions. Second operand 12 states. [2019-10-15 03:07:50,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:50,200 INFO L93 Difference]: Finished difference Result 9344 states and 14100 transitions. [2019-10-15 03:07:50,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 03:07:50,201 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 145 [2019-10-15 03:07:50,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:50,249 INFO L225 Difference]: With dead ends: 9344 [2019-10-15 03:07:50,249 INFO L226 Difference]: Without dead ends: 6313 [2019-10-15 03:07:50,268 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-15 03:07:50,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6313 states. [2019-10-15 03:07:50,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6313 to 6211. [2019-10-15 03:07:50,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6211 states. [2019-10-15 03:07:50,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6211 states to 6211 states and 9266 transitions. [2019-10-15 03:07:50,668 INFO L78 Accepts]: Start accepts. Automaton has 6211 states and 9266 transitions. Word has length 145 [2019-10-15 03:07:50,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:50,669 INFO L462 AbstractCegarLoop]: Abstraction has 6211 states and 9266 transitions. [2019-10-15 03:07:50,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:07:50,669 INFO L276 IsEmpty]: Start isEmpty. Operand 6211 states and 9266 transitions. [2019-10-15 03:07:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 03:07:50,675 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:50,676 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:50,685 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:50,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:50,686 INFO L82 PathProgramCache]: Analyzing trace with hash -683602333, now seen corresponding path program 1 times [2019-10-15 03:07:50,687 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:50,687 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243663875] [2019-10-15 03:07:50,687 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:50,688 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:50,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:07:51,026 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243663875] [2019-10-15 03:07:51,028 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:51,028 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:07:51,028 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267087893] [2019-10-15 03:07:51,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:07:51,030 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:51,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:07:51,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:07:51,031 INFO L87 Difference]: Start difference. First operand 6211 states and 9266 transitions. Second operand 6 states. [2019-10-15 03:07:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:52,214 INFO L93 Difference]: Finished difference Result 6295 states and 9403 transitions. [2019-10-15 03:07:52,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:07:52,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2019-10-15 03:07:52,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:52,266 INFO L225 Difference]: With dead ends: 6295 [2019-10-15 03:07:52,267 INFO L226 Difference]: Without dead ends: 6272 [2019-10-15 03:07:52,271 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:52,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2019-10-15 03:07:52,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 6221. [2019-10-15 03:07:52,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2019-10-15 03:07:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9276 transitions. [2019-10-15 03:07:52,629 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9276 transitions. Word has length 146 [2019-10-15 03:07:52,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:52,630 INFO L462 AbstractCegarLoop]: Abstraction has 6221 states and 9276 transitions. [2019-10-15 03:07:52,630 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:07:52,630 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9276 transitions. [2019-10-15 03:07:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-15 03:07:52,634 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:52,635 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:52,635 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:52,636 INFO L82 PathProgramCache]: Analyzing trace with hash 290909612, now seen corresponding path program 1 times [2019-10-15 03:07:52,636 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:52,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992573357] [2019-10-15 03:07:52,637 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:52,637 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:52,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:07:52,917 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992573357] [2019-10-15 03:07:52,918 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:52,918 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:07:52,918 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425013143] [2019-10-15 03:07:52,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:07:52,920 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:52,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:07:52,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:07:52,921 INFO L87 Difference]: Start difference. First operand 6221 states and 9276 transitions. Second operand 9 states. [2019-10-15 03:07:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:54,435 INFO L93 Difference]: Finished difference Result 6565 states and 9748 transitions. [2019-10-15 03:07:54,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:07:54,436 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2019-10-15 03:07:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:54,479 INFO L225 Difference]: With dead ends: 6565 [2019-10-15 03:07:54,479 INFO L226 Difference]: Without dead ends: 6542 [2019-10-15 03:07:54,483 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:07:54,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2019-10-15 03:07:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 6402. [2019-10-15 03:07:54,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6402 states. [2019-10-15 03:07:54,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6402 states to 6402 states and 9515 transitions. [2019-10-15 03:07:54,813 INFO L78 Accepts]: Start accepts. Automaton has 6402 states and 9515 transitions. Word has length 151 [2019-10-15 03:07:54,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:54,814 INFO L462 AbstractCegarLoop]: Abstraction has 6402 states and 9515 transitions. [2019-10-15 03:07:54,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:07:54,815 INFO L276 IsEmpty]: Start isEmpty. Operand 6402 states and 9515 transitions. [2019-10-15 03:07:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 03:07:54,819 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:54,820 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:54,820 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:54,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:54,821 INFO L82 PathProgramCache]: Analyzing trace with hash -702252343, now seen corresponding path program 1 times [2019-10-15 03:07:54,821 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:54,821 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377433795] [2019-10-15 03:07:54,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:54,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:54,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat