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_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:05:50,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:05:50,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:05:50,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:05:50,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:05:50,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:05:50,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:05:50,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:05:50,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:05:50,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:05:50,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:05:50,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:05:50,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:05:50,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:05:50,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:05:50,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:05:50,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:05:50,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:05:50,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:05:50,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:05:50,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:05:50,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:05:50,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:05:50,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:05:50,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:05:50,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:05:50,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:05:50,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:05:50,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:05:50,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:05:50,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:05:50,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:05:50,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:05:50,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:05:50,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:05:50,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:05:50,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:05:50,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:05:50,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:05:50,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:05:50,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:05:50,888 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 03:05:50,912 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:05:50,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:05:50,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:05:50,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:05:50,916 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:05:50,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:05:50,916 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:05:50,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:05:50,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:05:50,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:05:50,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:05:50,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:05:50,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:05:50,919 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:05:50,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:05:50,919 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:05:50,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:05:50,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:05:50,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:05:50,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:05:50,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:05:50,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:05:50,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:05:50,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:05:50,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:05:50,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:05:50,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:05:50,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:05:50,922 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 03:05:51,267 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:05:51,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:05:51,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:05:51,303 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:05:51,303 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:05:51,304 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c [2019-10-15 03:05:51,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/506c28bc3/cabd1dd4d8d94c26b21b316bc13f99b0/FLAG4fff4e77a [2019-10-15 03:05:52,050 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:05:52,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c [2019-10-15 03:05:52,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/506c28bc3/cabd1dd4d8d94c26b21b316bc13f99b0/FLAG4fff4e77a [2019-10-15 03:05:52,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/506c28bc3/cabd1dd4d8d94c26b21b316bc13f99b0 [2019-10-15 03:05:52,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:05:52,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:05:52,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:05:52,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:05:52,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:05:52,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:52" (1/1) ... [2019-10-15 03:05:52,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7354cb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:52, skipping insertion in model container [2019-10-15 03:05:52,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:52" (1/1) ... [2019-10-15 03:05:52,269 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:05:52,337 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:05:53,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:05:53,161 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:05:53,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:05:53,423 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:05:53,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:53 WrapperNode [2019-10-15 03:05:53,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:05:53,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:05:53,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:05:53,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:05:53,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:53" (1/1) ... [2019-10-15 03:05:53,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:53" (1/1) ... [2019-10-15 03:05:53,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:53" (1/1) ... [2019-10-15 03:05:53,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:53" (1/1) ... [2019-10-15 03:05:53,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:53" (1/1) ... [2019-10-15 03:05:53,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:53" (1/1) ... [2019-10-15 03:05:53,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:53" (1/1) ... [2019-10-15 03:05:53,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:05:53,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:05:53,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:05:53,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:05:53,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:05:53,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:05:53,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:05:53,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:05:53,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:05:53,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:05:53,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:05:53,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:05:53,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:05:53,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:05:53,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:05:53,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-15 03:05:53,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-15 03:05:53,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:05:53,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:05:53,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:05:53,785 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:05:53,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:05:53,787 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:05:53,787 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:05:53,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:05:53,788 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:05:53,788 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:05:53,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:05:53,788 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:05:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:05:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:05:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:05:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:05:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:05:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:05:53,790 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:05:53,790 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:05:53,790 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:05:53,790 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:05:53,790 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:05:53,790 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:05:53,791 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:05:53,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:05:53,791 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:05:53,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:05:53,792 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:05:53,792 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:05:53,792 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:05:53,792 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:05:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:05:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:05:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:05:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:05:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:05:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:05:53,794 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:05:53,794 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:05:53,794 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:05:53,794 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:05:53,794 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:05:53,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:05:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:05:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:05:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:05:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:05:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:05:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:05:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:05:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:05:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:05:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:05:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:05:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:05:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:05:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:05:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:05:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:05:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:05:53,799 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:05:53,800 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:05:53,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:05:53,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:05:53,801 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:05:53,801 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:05:53,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:05:53,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:05:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:05:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:05:53,803 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:05:53,803 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:05:53,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:05:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:05:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:05:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:05:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:05:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:05:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:05:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:05:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:05:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:05:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:05:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:05:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-15 03:05:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:05:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-15 03:05:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:05:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:05:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:05:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:05:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:05:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:05:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:05:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:05:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:05:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:05:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:05:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:05:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:05:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:05:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:05:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:05:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:05:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:05:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:05:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:05:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:05:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:05:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:05:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:05:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:05:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:05:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:05:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:05:53,813 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:05:53,813 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:05:53,814 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:05:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:05:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:05:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:05:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:05:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:05:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:05:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:05:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:05:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:05:53,824 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:05:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:05:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:05:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:05:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:05:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:05:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:05:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:05:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:05:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:05:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:05:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:05:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:05:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:05:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:05:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:05:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:05:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:05:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:05:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:05:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:05:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:05:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:05:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:05:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:05:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:05:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:05:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:05:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:05:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:05:59,956 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:05:59,956 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:05:59,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:05:59 BoogieIcfgContainer [2019-10-15 03:05:59,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:05:59,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:05:59,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:05:59,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:05:59,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:05:52" (1/3) ... [2019-10-15 03:05:59,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aade655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:05:59, skipping insertion in model container [2019-10-15 03:05:59,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:53" (2/3) ... [2019-10-15 03:05:59,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aade655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:05:59, skipping insertion in model container [2019-10-15 03:05:59,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:05:59" (3/3) ... [2019-10-15 03:05:59,967 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product31.cil.c [2019-10-15 03:05:59,976 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:05:59,986 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:05:59,997 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:06:00,033 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:06:00,033 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:06:00,033 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:06:00,034 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:06:00,034 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:06:00,034 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:06:00,034 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:06:00,034 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:06:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states. [2019-10-15 03:06:00,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 03:06:00,103 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:00,105 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2019-10-15 03:06:00,107 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:00,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:00,113 INFO L82 PathProgramCache]: Analyzing trace with hash -118967536, now seen corresponding path program 1 times [2019-10-15 03:06:00,123 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:00,123 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109269703] [2019-10-15 03:06:00,124 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:00,124 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:00,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:06:00,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109269703] [2019-10-15 03:06:00,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306374836] [2019-10-15 03:06:00,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:01,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-15 03:06:01,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:06:01,776 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:02,068 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:06:02,069 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:02,069 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 2 [2019-10-15 03:06:02,070 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18211452] [2019-10-15 03:06:02,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:06:02,078 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:02,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:06:02,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:06:02,095 INFO L87 Difference]: Start difference. First operand 621 states. Second operand 2 states. [2019-10-15 03:06:02,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:02,241 INFO L93 Difference]: Finished difference Result 992 states and 1498 transitions. [2019-10-15 03:06:02,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:06:02,242 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 133 [2019-10-15 03:06:02,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:02,266 INFO L225 Difference]: With dead ends: 992 [2019-10-15 03:06:02,266 INFO L226 Difference]: Without dead ends: 504 [2019-10-15 03:06:02,278 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 267 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 03:06:02,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2019-10-15 03:06:02,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2019-10-15 03:06:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2019-10-15 03:06:02,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 745 transitions. [2019-10-15 03:06:02,380 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 745 transitions. Word has length 133 [2019-10-15 03:06:02,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:02,382 INFO L462 AbstractCegarLoop]: Abstraction has 504 states and 745 transitions. [2019-10-15 03:06:02,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:06:02,382 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 745 transitions. [2019-10-15 03:06:02,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 03:06:02,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:02,398 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2019-10-15 03:06:02,598 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:02,599 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:02,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:02,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1296682160, now seen corresponding path program 1 times [2019-10-15 03:06:02,600 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:02,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91993532] [2019-10-15 03:06:02,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:02,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:02,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:02,999 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 03:06:03,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91993532] [2019-10-15 03:06:03,001 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:03,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:06:03,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575922470] [2019-10-15 03:06:03,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:03,003 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:03,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:03,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:03,004 INFO L87 Difference]: Start difference. First operand 504 states and 745 transitions. Second operand 5 states. [2019-10-15 03:06:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:03,995 INFO L93 Difference]: Finished difference Result 1438 states and 2166 transitions. [2019-10-15 03:06:03,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:06:03,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2019-10-15 03:06:03,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:04,015 INFO L225 Difference]: With dead ends: 1438 [2019-10-15 03:06:04,016 INFO L226 Difference]: Without dead ends: 971 [2019-10-15 03:06:04,021 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:04,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2019-10-15 03:06:04,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 963. [2019-10-15 03:06:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2019-10-15 03:06:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1446 transitions. [2019-10-15 03:06:04,142 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1446 transitions. Word has length 133 [2019-10-15 03:06:04,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:04,144 INFO L462 AbstractCegarLoop]: Abstraction has 963 states and 1446 transitions. [2019-10-15 03:06:04,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1446 transitions. [2019-10-15 03:06:04,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 03:06:04,151 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:04,151 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2019-10-15 03:06:04,153 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:04,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:04,153 INFO L82 PathProgramCache]: Analyzing trace with hash 237582798, now seen corresponding path program 1 times [2019-10-15 03:06:04,154 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:04,154 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663500220] [2019-10-15 03:06:04,155 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:04,155 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:04,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:06:04,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663500220] [2019-10-15 03:06:04,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297151062] [2019-10-15 03:06:04,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:05,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:06:05,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:05,213 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:05,213 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:05,435 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:06:05,435 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:05,436 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-15 03:06:05,436 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573704737] [2019-10-15 03:06:05,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:05,437 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:05,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:05,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:05,437 INFO L87 Difference]: Start difference. First operand 963 states and 1446 transitions. Second operand 4 states. [2019-10-15 03:06:05,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:05,549 INFO L93 Difference]: Finished difference Result 1901 states and 2887 transitions. [2019-10-15 03:06:05,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:05,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2019-10-15 03:06:05,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:05,561 INFO L225 Difference]: With dead ends: 1901 [2019-10-15 03:06:05,562 INFO L226 Difference]: Without dead ends: 975 [2019-10-15 03:06:05,569 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:05,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2019-10-15 03:06:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 975. [2019-10-15 03:06:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2019-10-15 03:06:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1458 transitions. [2019-10-15 03:06:05,656 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1458 transitions. Word has length 137 [2019-10-15 03:06:05,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:05,660 INFO L462 AbstractCegarLoop]: Abstraction has 975 states and 1458 transitions. [2019-10-15 03:06:05,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:05,660 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1458 transitions. [2019-10-15 03:06:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-15 03:06:05,667 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:05,668 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 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] [2019-10-15 03:06:05,868 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:05,869 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:05,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:05,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1649777829, now seen corresponding path program 1 times [2019-10-15 03:06:05,869 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:05,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290446153] [2019-10-15 03:06:05,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:05,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:05,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:06:06,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290446153] [2019-10-15 03:06:06,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609141003] [2019-10-15 03:06:06,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:07,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:06:07,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 03:06:07,164 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:06:07,350 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:06:07,350 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-15 03:06:07,351 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027738870] [2019-10-15 03:06:07,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:07,353 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:07,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:07,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:07,354 INFO L87 Difference]: Start difference. First operand 975 states and 1458 transitions. Second operand 5 states. [2019-10-15 03:06:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:07,446 INFO L93 Difference]: Finished difference Result 1919 states and 2897 transitions. [2019-10-15 03:06:07,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:07,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2019-10-15 03:06:07,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:07,456 INFO L225 Difference]: With dead ends: 1919 [2019-10-15 03:06:07,457 INFO L226 Difference]: Without dead ends: 973 [2019-10-15 03:06:07,462 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:06:07,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-15 03:06:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 973. [2019-10-15 03:06:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2019-10-15 03:06:07,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1450 transitions. [2019-10-15 03:06:07,510 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1450 transitions. Word has length 139 [2019-10-15 03:06:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:07,513 INFO L462 AbstractCegarLoop]: Abstraction has 973 states and 1450 transitions. [2019-10-15 03:06:07,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:07,513 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1450 transitions. [2019-10-15 03:06:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 03:06:07,521 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:07,521 INFO L380 BasicCegarLoop]: trace histogram [2, 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] [2019-10-15 03:06:07,729 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:07,730 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:07,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:07,730 INFO L82 PathProgramCache]: Analyzing trace with hash -787169402, now seen corresponding path program 1 times [2019-10-15 03:06:07,731 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:07,731 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540886947] [2019-10-15 03:06:07,731 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:07,732 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:07,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:06:08,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540886947] [2019-10-15 03:06:08,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040109103] [2019-10-15 03:06:08,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:08,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:06:08,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:08,775 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:09,022 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:09,022 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-15 03:06:09,022 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300955572] [2019-10-15 03:06:09,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:09,023 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:09,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:09,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:09,024 INFO L87 Difference]: Start difference. First operand 973 states and 1450 transitions. Second operand 5 states. [2019-10-15 03:06:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:10,867 INFO L93 Difference]: Finished difference Result 2353 states and 3570 transitions. [2019-10-15 03:06:10,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:06:10,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2019-10-15 03:06:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:10,881 INFO L225 Difference]: With dead ends: 2353 [2019-10-15 03:06:10,881 INFO L226 Difference]: Without dead ends: 1417 [2019-10-15 03:06:10,887 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 272 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:06:10,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2019-10-15 03:06:10,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1397. [2019-10-15 03:06:10,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1397 states. [2019-10-15 03:06:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2056 transitions. [2019-10-15 03:06:10,958 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2056 transitions. Word has length 140 [2019-10-15 03:06:10,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:10,959 INFO L462 AbstractCegarLoop]: Abstraction has 1397 states and 2056 transitions. [2019-10-15 03:06:10,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:10,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2056 transitions. [2019-10-15 03:06:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 03:06:10,964 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:10,964 INFO L380 BasicCegarLoop]: trace histogram [2, 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] [2019-10-15 03:06:11,175 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:11,176 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:11,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:11,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1947274654, now seen corresponding path program 1 times [2019-10-15 03:06:11,177 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:11,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706286434] [2019-10-15 03:06:11,178 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:11,178 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:11,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:06:11,385 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706286434] [2019-10-15 03:06:11,385 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746307423] [2019-10-15 03:06:11,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:12,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-15 03:06:12,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:06:12,308 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:13,531 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:06:13,532 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:13,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2019-10-15 03:06:13,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643964261] [2019-10-15 03:06:13,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:13,534 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:13,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:13,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:06:13,535 INFO L87 Difference]: Start difference. First operand 1397 states and 2056 transitions. Second operand 7 states. [2019-10-15 03:06:15,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:15,461 INFO L93 Difference]: Finished difference Result 3022 states and 4460 transitions. [2019-10-15 03:06:15,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:06:15,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2019-10-15 03:06:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:15,486 INFO L225 Difference]: With dead ends: 3022 [2019-10-15 03:06:15,486 INFO L226 Difference]: Without dead ends: 1662 [2019-10-15 03:06:15,494 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 271 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:06:15,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2019-10-15 03:06:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1643. [2019-10-15 03:06:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1643 states. [2019-10-15 03:06:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2402 transitions. [2019-10-15 03:06:15,564 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2402 transitions. Word has length 141 [2019-10-15 03:06:15,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:15,565 INFO L462 AbstractCegarLoop]: Abstraction has 1643 states and 2402 transitions. [2019-10-15 03:06:15,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:15,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2402 transitions. [2019-10-15 03:06:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 03:06:15,568 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:15,569 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:06:15,777 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:15,777 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:15,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:15,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1280114856, now seen corresponding path program 1 times [2019-10-15 03:06:15,778 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:15,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301723165] [2019-10-15 03:06:15,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:15,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:15,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:15,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301723165] [2019-10-15 03:06:15,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918014300] [2019-10-15 03:06:15,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:17,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 2965 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:06:17,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:06:17,162 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:17,354 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:06:17,354 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 8 [2019-10-15 03:06:17,355 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62809479] [2019-10-15 03:06:17,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:17,356 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:17,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:17,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:17,356 INFO L87 Difference]: Start difference. First operand 1643 states and 2402 transitions. Second operand 5 states. [2019-10-15 03:06:17,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:17,434 INFO L93 Difference]: Finished difference Result 3268 states and 4835 transitions. [2019-10-15 03:06:17,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:17,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2019-10-15 03:06:17,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:17,445 INFO L225 Difference]: With dead ends: 3268 [2019-10-15 03:06:17,445 INFO L226 Difference]: Without dead ends: 1675 [2019-10-15 03:06:17,456 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 277 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:17,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2019-10-15 03:06:17,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1655. [2019-10-15 03:06:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1655 states. [2019-10-15 03:06:17,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2414 transitions. [2019-10-15 03:06:17,537 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2414 transitions. Word has length 141 [2019-10-15 03:06:17,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:17,537 INFO L462 AbstractCegarLoop]: Abstraction has 1655 states and 2414 transitions. [2019-10-15 03:06:17,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:17,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2414 transitions. [2019-10-15 03:06:17,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 03:06:17,542 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:17,542 INFO L380 BasicCegarLoop]: trace histogram [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 03:06:17,755 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:17,757 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:17,758 INFO L82 PathProgramCache]: Analyzing trace with hash 293521892, now seen corresponding path program 1 times [2019-10-15 03:06:17,759 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:17,760 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183599390] [2019-10-15 03:06:17,760 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:17,760 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:17,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:17,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183599390] [2019-10-15 03:06:17,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772188633] [2019-10-15 03:06:17,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:18,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:06:18,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:06:18,841 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:19,142 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:19,143 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:19,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-15 03:06:19,143 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520330268] [2019-10-15 03:06:19,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:19,144 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:19,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:19,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:19,145 INFO L87 Difference]: Start difference. First operand 1655 states and 2414 transitions. Second operand 4 states. [2019-10-15 03:06:19,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:19,610 INFO L93 Difference]: Finished difference Result 3334 states and 4951 transitions. [2019-10-15 03:06:19,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:06:19,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2019-10-15 03:06:19,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:19,624 INFO L225 Difference]: With dead ends: 3334 [2019-10-15 03:06:19,624 INFO L226 Difference]: Without dead ends: 1730 [2019-10-15 03:06:19,633 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2019-10-15 03:06:19,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1712. [2019-10-15 03:06:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1712 states. [2019-10-15 03:06:19,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2507 transitions. [2019-10-15 03:06:19,723 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2507 transitions. Word has length 143 [2019-10-15 03:06:19,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:19,724 INFO L462 AbstractCegarLoop]: Abstraction has 1712 states and 2507 transitions. [2019-10-15 03:06:19,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:19,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2507 transitions. [2019-10-15 03:06:19,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 03:06:19,728 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:19,729 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:06:19,937 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:19,938 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:19,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:19,938 INFO L82 PathProgramCache]: Analyzing trace with hash -2100094758, now seen corresponding path program 1 times [2019-10-15 03:06:19,938 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:19,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380437088] [2019-10-15 03:06:19,939 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:19,939 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:19,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:20,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380437088] [2019-10-15 03:06:20,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235308410] [2019-10-15 03:06:20,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:20,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:06:20,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:21,041 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:21,266 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:21,266 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 10 [2019-10-15 03:06:21,266 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634792076] [2019-10-15 03:06:21,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:21,267 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:21,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:21,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:06:21,267 INFO L87 Difference]: Start difference. First operand 1712 states and 2507 transitions. Second operand 5 states. [2019-10-15 03:06:23,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:23,133 INFO L93 Difference]: Finished difference Result 4000 states and 6073 transitions. [2019-10-15 03:06:23,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:06:23,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2019-10-15 03:06:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:23,151 INFO L225 Difference]: With dead ends: 4000 [2019-10-15 03:06:23,152 INFO L226 Difference]: Without dead ends: 2805 [2019-10-15 03:06:23,158 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 287 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:06:23,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2019-10-15 03:06:23,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2740. [2019-10-15 03:06:23,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2740 states. [2019-10-15 03:06:23,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 4111 transitions. [2019-10-15 03:06:23,279 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 4111 transitions. Word has length 145 [2019-10-15 03:06:23,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:23,281 INFO L462 AbstractCegarLoop]: Abstraction has 2740 states and 4111 transitions. [2019-10-15 03:06:23,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:23,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 4111 transitions. [2019-10-15 03:06:23,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 03:06:23,289 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:23,290 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 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] [2019-10-15 03:06:23,499 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:23,500 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:23,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:23,500 INFO L82 PathProgramCache]: Analyzing trace with hash -70432572, now seen corresponding path program 1 times [2019-10-15 03:06:23,500 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:23,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767325450] [2019-10-15 03:06:23,502 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:23,502 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:23,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:23,722 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767325450] [2019-10-15 03:06:23,722 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595722955] [2019-10-15 03:06:23,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:24,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:24,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:06:24,552 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:24,749 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:24,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2019-10-15 03:06:24,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862252366] [2019-10-15 03:06:24,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:24,750 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:24,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:24,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:24,750 INFO L87 Difference]: Start difference. First operand 2740 states and 4111 transitions. Second operand 4 states. [2019-10-15 03:06:24,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:24,888 INFO L93 Difference]: Finished difference Result 5418 states and 8304 transitions. [2019-10-15 03:06:24,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:06:24,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-15 03:06:24,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:24,907 INFO L225 Difference]: With dead ends: 5418 [2019-10-15 03:06:24,907 INFO L226 Difference]: Without dead ends: 2729 [2019-10-15 03:06:24,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:24,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2019-10-15 03:06:25,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2642. [2019-10-15 03:06:25,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2642 states. [2019-10-15 03:06:25,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3929 transitions. [2019-10-15 03:06:25,041 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3929 transitions. Word has length 145 [2019-10-15 03:06:25,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:25,042 INFO L462 AbstractCegarLoop]: Abstraction has 2642 states and 3929 transitions. [2019-10-15 03:06:25,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:25,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3929 transitions. [2019-10-15 03:06:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 03:06:25,046 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:25,047 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 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] [2019-10-15 03:06:25,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:25,256 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:25,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:25,256 INFO L82 PathProgramCache]: Analyzing trace with hash -389456864, now seen corresponding path program 1 times [2019-10-15 03:06:25,257 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:25,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138243889] [2019-10-15 03:06:25,258 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:25,258 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:25,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 03:06:25,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138243889] [2019-10-15 03:06:25,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994045784] [2019-10-15 03:06:25,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true