java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:03,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:03,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:03,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:03,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:03,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:03,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:03,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:03,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:03,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:03,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:03,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:03,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:03,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:03,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:03,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:03,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:03,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:03,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:03,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:03,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:03,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:03,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:03,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:03,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:03,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:03,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:03,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:03,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:03,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:03,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:03,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:03,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:03,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:03,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:03,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:03,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:03,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:03,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:03,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:03,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:03,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:07:03,928 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:03,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:03,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:03,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:03,935 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:03,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:03,937 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:03,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:03,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:03,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:03,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:03,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:03,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:03,940 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:03,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:03,941 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:03,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:03,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:03,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:03,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:03,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:03,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:03,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:03,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:03,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:03,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:03,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:03,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:03,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:07:04,256 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:04,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:04,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:04,278 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:04,279 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:04,279 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c [2019-10-15 03:07:04,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1f70f9b/8d8a039b304e48ee9742988133cf1421/FLAGb1d114201 [2019-10-15 03:07:05,200 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:05,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c [2019-10-15 03:07:05,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1f70f9b/8d8a039b304e48ee9742988133cf1421/FLAGb1d114201 [2019-10-15 03:07:05,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1f70f9b/8d8a039b304e48ee9742988133cf1421 [2019-10-15 03:07:05,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:05,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:05,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:05,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:05,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:05,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:05" (1/1) ... [2019-10-15 03:07:05,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7338ed1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:05, skipping insertion in model container [2019-10-15 03:07:05,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:05" (1/1) ... [2019-10-15 03:07:05,346 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:05,436 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:06,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:06,280 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:06,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:06,583 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:06,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06 WrapperNode [2019-10-15 03:07:06,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:06,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:06,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:06,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:06,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:07:06,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:07:06,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:07:06,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:07:06,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:06,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:07:06,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:07:06,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:06,956 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:07:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:07:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:07:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:07:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:07:06,958 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:07:06,959 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:07:06,959 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:07:06,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:06,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:06,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:06,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:07:06,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:07:06,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:07:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:07:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:07:06,963 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:07:06,964 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:07:06,964 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:07:06,964 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:07:06,964 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:07:06,965 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:07:06,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:07:06,965 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:07:06,966 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:07:06,966 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:07:06,966 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:07:06,966 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:07:06,967 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:07:06,967 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:07:06,967 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:07:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:07:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:07:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:07:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:07:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:07:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:07:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:07:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:07:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:07:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:07:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:07:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:07:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:07:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:07:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:07:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:07:06,972 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:07:06,972 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:07:06,972 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:07:06,972 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:07:06,972 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:07:06,973 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:07:06,973 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:07:06,973 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:07:06,973 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:07:06,973 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:07:06,974 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:07:06,974 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:07:06,974 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:07:06,974 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:07:06,974 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:07:06,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:07:06,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:07:06,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:07:06,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:07:06,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:07:06,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:07:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:07:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:07:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:07:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:07:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:07:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:07:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:07:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:07:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:07:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:07:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:07:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:07:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:07:06,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:07:06,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:07:06,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:06,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:07:06,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:06,980 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:06,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:07:06,980 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:07:06,980 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:07:06,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:07:06,980 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:07:06,981 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:07:06,981 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:07:06,981 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:07:06,981 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:07:06,981 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:07:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:07:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:07:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:07:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:07:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:07:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:07:06,983 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:07:06,983 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:07:06,983 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:07:06,983 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:07:06,983 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:07:06,983 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:07:06,984 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:07:06,984 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:07:06,984 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:07:06,984 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:07:06,984 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:07:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:07:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:07:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:07:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:07:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:07:06,986 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:07:06,986 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:07:06,986 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:07:06,986 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:07:06,986 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:07:06,987 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:07:06,987 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:06,987 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:07:06,987 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:07:06,987 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:06,988 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:07:06,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:06,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:06,988 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:07:06,988 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:07:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:07:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:07:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:07:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:07:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:07:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:07:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:07:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:07:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:07:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:07:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:07:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:07:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:07:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:07:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:07:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:07:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:07:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:07:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:07:13,473 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:07:13,474 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:07:13,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:13 BoogieIcfgContainer [2019-10-15 03:07:13,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:07:13,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:07:13,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:07:13,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:07:13,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:05" (1/3) ... [2019-10-15 03:07:13,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14baf77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:13, skipping insertion in model container [2019-10-15 03:07:13,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (2/3) ... [2019-10-15 03:07:13,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14baf77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:13, skipping insertion in model container [2019-10-15 03:07:13,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:13" (3/3) ... [2019-10-15 03:07:13,484 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product17.cil.c [2019-10-15 03:07:13,494 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:07:13,505 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:07:13,517 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:07:13,552 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:07:13,552 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:07:13,552 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:07:13,552 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:07:13,553 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:07:13,553 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:07:13,553 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:07:13,553 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:07:13,587 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states. [2019-10-15 03:07:13,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-15 03:07:13,610 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:13,611 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:13,614 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:13,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:13,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1486167384, now seen corresponding path program 1 times [2019-10-15 03:07:13,630 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:13,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036926542] [2019-10-15 03:07:13,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:13,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:13,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:07:14,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036926542] [2019-10-15 03:07:14,544 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:14,545 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:07:14,545 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192538740] [2019-10-15 03:07:14,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:07:14,550 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:14,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:07:14,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:14,568 INFO L87 Difference]: Start difference. First operand 543 states. Second operand 8 states. [2019-10-15 03:07:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:14,796 INFO L93 Difference]: Finished difference Result 839 states and 1298 transitions. [2019-10-15 03:07:14,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:07:14,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2019-10-15 03:07:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:14,828 INFO L225 Difference]: With dead ends: 839 [2019-10-15 03:07:14,828 INFO L226 Difference]: Without dead ends: 457 [2019-10-15 03:07:14,838 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:14,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2019-10-15 03:07:15,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 422. [2019-10-15 03:07:15,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2019-10-15 03:07:15,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 630 transitions. [2019-10-15 03:07:15,018 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 630 transitions. Word has length 115 [2019-10-15 03:07:15,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:15,019 INFO L462 AbstractCegarLoop]: Abstraction has 422 states and 630 transitions. [2019-10-15 03:07:15,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:07:15,020 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 630 transitions. [2019-10-15 03:07:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:07:15,038 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:15,038 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:15,039 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:15,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:15,040 INFO L82 PathProgramCache]: Analyzing trace with hash -890542085, now seen corresponding path program 1 times [2019-10-15 03:07:15,040 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:15,040 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751700067] [2019-10-15 03:07:15,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:15,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:15,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:07:15,556 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751700067] [2019-10-15 03:07:15,556 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:15,556 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:07:15,556 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452941804] [2019-10-15 03:07:15,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:07:15,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:15,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:07:15,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:15,560 INFO L87 Difference]: Start difference. First operand 422 states and 630 transitions. Second operand 7 states. [2019-10-15 03:07:20,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:20,773 INFO L93 Difference]: Finished difference Result 1275 states and 1973 transitions. [2019-10-15 03:07:20,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 03:07:20,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-10-15 03:07:20,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:20,791 INFO L225 Difference]: With dead ends: 1275 [2019-10-15 03:07:20,792 INFO L226 Difference]: Without dead ends: 906 [2019-10-15 03:07:20,797 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:07:20,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2019-10-15 03:07:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 879. [2019-10-15 03:07:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2019-10-15 03:07:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1362 transitions. [2019-10-15 03:07:20,931 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1362 transitions. Word has length 120 [2019-10-15 03:07:20,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:20,938 INFO L462 AbstractCegarLoop]: Abstraction has 879 states and 1362 transitions. [2019-10-15 03:07:20,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:07:20,939 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1362 transitions. [2019-10-15 03:07:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 03:07:20,948 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:20,948 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:20,949 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:20,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:20,949 INFO L82 PathProgramCache]: Analyzing trace with hash -2120130814, now seen corresponding path program 1 times [2019-10-15 03:07:20,957 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:20,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071354779] [2019-10-15 03:07:20,957 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:20,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:20,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:07:21,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071354779] [2019-10-15 03:07:21,255 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:21,255 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:07:21,255 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192496801] [2019-10-15 03:07:21,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:07:21,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:21,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:07:21,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:07:21,257 INFO L87 Difference]: Start difference. First operand 879 states and 1362 transitions. Second operand 5 states. [2019-10-15 03:07:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:21,366 INFO L93 Difference]: Finished difference Result 1385 states and 2161 transitions. [2019-10-15 03:07:21,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:07:21,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2019-10-15 03:07:21,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:21,374 INFO L225 Difference]: With dead ends: 1385 [2019-10-15 03:07:21,375 INFO L226 Difference]: Without dead ends: 901 [2019-10-15 03:07:21,378 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:07:21,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2019-10-15 03:07:21,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 891. [2019-10-15 03:07:21,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2019-10-15 03:07:21,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1377 transitions. [2019-10-15 03:07:21,438 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1377 transitions. Word has length 124 [2019-10-15 03:07:21,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:21,438 INFO L462 AbstractCegarLoop]: Abstraction has 891 states and 1377 transitions. [2019-10-15 03:07:21,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:07:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1377 transitions. [2019-10-15 03:07:21,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 03:07:21,442 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:21,442 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:21,443 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:21,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:21,443 INFO L82 PathProgramCache]: Analyzing trace with hash 678689370, now seen corresponding path program 1 times [2019-10-15 03:07:21,444 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:21,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249664607] [2019-10-15 03:07:21,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:21,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:21,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:07:21,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249664607] [2019-10-15 03:07:21,798 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:21,799 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:07:21,799 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136446709] [2019-10-15 03:07:21,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:07:21,800 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:21,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:07:21,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:21,800 INFO L87 Difference]: Start difference. First operand 891 states and 1377 transitions. Second operand 8 states. [2019-10-15 03:07:27,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:27,655 INFO L93 Difference]: Finished difference Result 1876 states and 2908 transitions. [2019-10-15 03:07:27,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:07:27,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2019-10-15 03:07:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:27,670 INFO L225 Difference]: With dead ends: 1876 [2019-10-15 03:07:27,671 INFO L226 Difference]: Without dead ends: 1284 [2019-10-15 03:07:27,674 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:07:27,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2019-10-15 03:07:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1234. [2019-10-15 03:07:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2019-10-15 03:07:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1867 transitions. [2019-10-15 03:07:27,771 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1867 transitions. Word has length 128 [2019-10-15 03:07:27,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:27,772 INFO L462 AbstractCegarLoop]: Abstraction has 1234 states and 1867 transitions. [2019-10-15 03:07:27,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:07:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1867 transitions. [2019-10-15 03:07:27,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:07:27,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:27,776 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:27,777 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:27,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:27,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1304617669, now seen corresponding path program 1 times [2019-10-15 03:07:27,777 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:27,778 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076370128] [2019-10-15 03:07:27,778 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:27,778 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:27,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:07:27,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076370128] [2019-10-15 03:07:27,971 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:27,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:07:27,972 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147825868] [2019-10-15 03:07:27,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:07:27,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:27,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:07:27,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:27,973 INFO L87 Difference]: Start difference. First operand 1234 states and 1867 transitions. Second operand 7 states. [2019-10-15 03:07:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:28,522 INFO L93 Difference]: Finished difference Result 2313 states and 3586 transitions. [2019-10-15 03:07:28,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:07:28,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-15 03:07:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:28,538 INFO L225 Difference]: With dead ends: 2313 [2019-10-15 03:07:28,538 INFO L226 Difference]: Without dead ends: 1234 [2019-10-15 03:07:28,546 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2019-10-15 03:07:28,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2019-10-15 03:07:28,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2019-10-15 03:07:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1835 transitions. [2019-10-15 03:07:28,654 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1835 transitions. Word has length 131 [2019-10-15 03:07:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:28,655 INFO L462 AbstractCegarLoop]: Abstraction has 1234 states and 1835 transitions. [2019-10-15 03:07:28,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:07:28,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1835 transitions. [2019-10-15 03:07:28,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 03:07:28,659 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:28,659 INFO L380 BasicCegarLoop]: trace histogram [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 03:07:28,659 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:28,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:28,660 INFO L82 PathProgramCache]: Analyzing trace with hash -2145055282, now seen corresponding path program 1 times [2019-10-15 03:07:28,660 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:28,660 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960240934] [2019-10-15 03:07:28,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:28,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:28,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:07:28,954 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960240934] [2019-10-15 03:07:28,954 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:28,955 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:07:28,955 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363934901] [2019-10-15 03:07:28,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:07:28,956 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:28,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:07:28,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:28,956 INFO L87 Difference]: Start difference. First operand 1234 states and 1835 transitions. Second operand 7 states. [2019-10-15 03:07:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:32,675 INFO L93 Difference]: Finished difference Result 2182 states and 3256 transitions. [2019-10-15 03:07:32,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:07:32,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-10-15 03:07:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:32,686 INFO L225 Difference]: With dead ends: 2182 [2019-10-15 03:07:32,687 INFO L226 Difference]: Without dead ends: 1304 [2019-10-15 03:07:32,692 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:07:32,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2019-10-15 03:07:32,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1261. [2019-10-15 03:07:32,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2019-10-15 03:07:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1869 transitions. [2019-10-15 03:07:32,769 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1869 transitions. Word has length 133 [2019-10-15 03:07:32,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:32,771 INFO L462 AbstractCegarLoop]: Abstraction has 1261 states and 1869 transitions. [2019-10-15 03:07:32,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:07:32,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1869 transitions. [2019-10-15 03:07:32,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 03:07:32,774 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:32,774 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:32,775 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:32,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1726253342, now seen corresponding path program 1 times [2019-10-15 03:07:32,775 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:32,776 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039736804] [2019-10-15 03:07:32,776 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:32,776 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:32,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:33,670 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:07:33,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039736804] [2019-10-15 03:07:33,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427455293] [2019-10-15 03:07:33,671 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 03:07:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:34,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 3214 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:07:34,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:07:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:07:34,629 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:07:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:07:35,401 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:07:35,401 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [26] total 33 [2019-10-15 03:07:35,401 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791888489] [2019-10-15 03:07:35,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:07:35,402 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:35,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:07:35,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 03:07:35,404 INFO L87 Difference]: Start difference. First operand 1261 states and 1869 transitions. Second operand 9 states. [2019-10-15 03:07:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:36,984 INFO L93 Difference]: Finished difference Result 1335 states and 1983 transitions. [2019-10-15 03:07:36,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:07:36,985 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2019-10-15 03:07:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:37,005 INFO L225 Difference]: With dead ends: 1335 [2019-10-15 03:07:37,006 INFO L226 Difference]: Without dead ends: 1318 [2019-10-15 03:07:37,010 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 285 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 03:07:37,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2019-10-15 03:07:37,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1288. [2019-10-15 03:07:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2019-10-15 03:07:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1908 transitions. [2019-10-15 03:07:37,151 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1908 transitions. Word has length 137 [2019-10-15 03:07:37,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:37,151 INFO L462 AbstractCegarLoop]: Abstraction has 1288 states and 1908 transitions. [2019-10-15 03:07:37,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:07:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1908 transitions. [2019-10-15 03:07:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-15 03:07:37,155 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:37,155 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:37,378 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:07:37,379 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:37,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:37,379 INFO L82 PathProgramCache]: Analyzing trace with hash 797122739, now seen corresponding path program 1 times [2019-10-15 03:07:37,380 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:37,380 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612968930] [2019-10-15 03:07:37,380 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:37,380 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:37,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:07:37,739 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612968930] [2019-10-15 03:07:37,740 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:37,740 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:07:37,741 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619634191] [2019-10-15 03:07:37,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:07:37,741 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:37,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:07:37,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:37,742 INFO L87 Difference]: Start difference. First operand 1288 states and 1908 transitions. Second operand 8 states. [2019-10-15 03:07:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:37,822 INFO L93 Difference]: Finished difference Result 1305 states and 1928 transitions. [2019-10-15 03:07:37,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:07:37,823 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2019-10-15 03:07:37,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:37,836 INFO L225 Difference]: With dead ends: 1305 [2019-10-15 03:07:37,836 INFO L226 Difference]: Without dead ends: 1288 [2019-10-15 03:07:37,838 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:07:37,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2019-10-15 03:07:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2019-10-15 03:07:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2019-10-15 03:07:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1903 transitions. [2019-10-15 03:07:37,921 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1903 transitions. Word has length 142 [2019-10-15 03:07:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:37,923 INFO L462 AbstractCegarLoop]: Abstraction has 1288 states and 1903 transitions. [2019-10-15 03:07:37,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:07:37,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1903 transitions. [2019-10-15 03:07:37,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 03:07:37,929 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:37,930 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:37,930 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:37,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:37,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1965157323, now seen corresponding path program 1 times [2019-10-15 03:07:37,932 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:37,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634090545] [2019-10-15 03:07:37,933 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:37,933 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:37,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:07:38,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634090545] [2019-10-15 03:07:38,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15613107] [2019-10-15 03:07:38,689 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 03:07:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:39,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 3272 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 03:07:39,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:07:39,495 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:07:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:07:39,583 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:07:40,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:07:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:07:40,789 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:07:40,789 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [26] total 31 [2019-10-15 03:07:40,789 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151747218] [2019-10-15 03:07:40,790 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:07:40,790 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:40,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:07:40,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2019-10-15 03:07:40,791 INFO L87 Difference]: Start difference. First operand 1288 states and 1903 transitions. Second operand 7 states. [2019-10-15 03:07:40,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:40,894 INFO L93 Difference]: Finished difference Result 1329 states and 1954 transitions. [2019-10-15 03:07:40,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:07:40,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2019-10-15 03:07:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:40,904 INFO L225 Difference]: With dead ends: 1329 [2019-10-15 03:07:40,904 INFO L226 Difference]: Without dead ends: 1312 [2019-10-15 03:07:40,905 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2019-10-15 03:07:40,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2019-10-15 03:07:40,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2019-10-15 03:07:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2019-10-15 03:07:40,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1927 transitions. [2019-10-15 03:07:40,972 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1927 transitions. Word has length 157 [2019-10-15 03:07:40,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:40,973 INFO L462 AbstractCegarLoop]: Abstraction has 1310 states and 1927 transitions. [2019-10-15 03:07:40,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:07:40,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1927 transitions. [2019-10-15 03:07:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-15 03:07:40,977 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:40,977 INFO L380 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]