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_spec3_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:43,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:43,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:43,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:43,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:43,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:43,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:43,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:43,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:43,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:43,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:43,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:43,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:43,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:43,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:43,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:43,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:43,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:43,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:43,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:43,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:43,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:43,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:43,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:43,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:43,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:43,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:43,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:43,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:43,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:43,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:43,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:43,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:43,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:43,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:43,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:43,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:43,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:43,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:43,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:43,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:43,989 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 03:09:44,026 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:44,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:44,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:44,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:44,029 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:44,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:44,029 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:44,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:44,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:44,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:44,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:44,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:44,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:44,030 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:44,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:44,031 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:44,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:44,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:44,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:44,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:44,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:44,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:44,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:44,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:44,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:44,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:44,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:44,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:44,034 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 03:09:44,319 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:44,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:44,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:44,348 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:44,349 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:44,349 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product29.cil.c [2019-10-15 03:09:44,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b46b98c/f43d9f3ed93c4a7f94d84a375fe99d5b/FLAGeb8877491 [2019-10-15 03:09:45,145 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:45,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product29.cil.c [2019-10-15 03:09:45,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b46b98c/f43d9f3ed93c4a7f94d84a375fe99d5b/FLAGeb8877491 [2019-10-15 03:09:45,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b46b98c/f43d9f3ed93c4a7f94d84a375fe99d5b [2019-10-15 03:09:45,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:45,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:45,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:45,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:45,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:45,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:45" (1/1) ... [2019-10-15 03:09:45,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1763af5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:45, skipping insertion in model container [2019-10-15 03:09:45,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:45" (1/1) ... [2019-10-15 03:09:45,376 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:45,479 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:46,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:46,250 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:46,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:46,549 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:46,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:46 WrapperNode [2019-10-15 03:09:46,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:46,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:46,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:46,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:46,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:46" (1/1) ... [2019-10-15 03:09:46,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:46" (1/1) ... [2019-10-15 03:09:46,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:46" (1/1) ... [2019-10-15 03:09:46,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:46" (1/1) ... [2019-10-15 03:09:46,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:46" (1/1) ... [2019-10-15 03:09:46,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:46" (1/1) ... [2019-10-15 03:09:46,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:46" (1/1) ... [2019-10-15 03:09:46,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:46,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:46,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:46,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:46,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:46" (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 03:09:46,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:46,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:46,886 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:46,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:46,886 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:46,887 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:46,887 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:46,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:46,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:46,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:46,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:46,893 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:46,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:46,895 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:46,895 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:46,895 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:46,895 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:46,895 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:46,896 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:46,896 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:46,896 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:46,896 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:46,896 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:46,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:46,896 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:46,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:46,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:46,897 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:46,897 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:46,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:46,898 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:46,898 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:46,898 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:46,898 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:46,898 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:46,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:46,901 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:46,901 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:46,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:46,901 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:46,901 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:46,902 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:46,902 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:46,902 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:46,902 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:46,903 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:46,903 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:46,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:46,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:46,904 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:46,905 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:46,905 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:46,906 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:46,906 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:46,906 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:46,907 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:46,907 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:46,907 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:46,908 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:46,908 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:46,909 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:46,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:46,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:46,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:46,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:52,673 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:52,673 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:52,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:52 BoogieIcfgContainer [2019-10-15 03:09:52,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:52,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:52,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:52,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:52,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:45" (1/3) ... [2019-10-15 03:09:52,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6501c698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:52, skipping insertion in model container [2019-10-15 03:09:52,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:46" (2/3) ... [2019-10-15 03:09:52,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6501c698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:52, skipping insertion in model container [2019-10-15 03:09:52,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:52" (3/3) ... [2019-10-15 03:09:52,684 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product29.cil.c [2019-10-15 03:09:52,693 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:52,702 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:52,711 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:52,754 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:52,754 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:52,754 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:52,754 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:52,754 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:52,754 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:52,754 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:52,755 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states. [2019-10-15 03:09:52,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-15 03:09:52,815 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:52,818 INFO L380 BasicCegarLoop]: trace histogram [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 03:09:52,820 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:52,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:52,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1689807222, now seen corresponding path program 1 times [2019-10-15 03:09:52,837 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:52,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490891525] [2019-10-15 03:09:52,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:52,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:52,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:09:53,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490891525] [2019-10-15 03:09:53,736 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302273142] [2019-10-15 03:09:53,736 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 03:09:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:54,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 3001 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:54,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:54,471 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:54,611 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:54,612 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-15 03:09:54,612 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239683105] [2019-10-15 03:09:54,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:54,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:54,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:54,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:54,636 INFO L87 Difference]: Start difference. First operand 598 states. Second operand 3 states. [2019-10-15 03:09:54,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:54,849 INFO L93 Difference]: Finished difference Result 1316 states and 2001 transitions. [2019-10-15 03:09:54,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:54,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2019-10-15 03:09:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:54,882 INFO L225 Difference]: With dead ends: 1316 [2019-10-15 03:09:54,883 INFO L226 Difference]: Without dead ends: 850 [2019-10-15 03:09:54,893 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:54,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2019-10-15 03:09:55,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 837. [2019-10-15 03:09:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2019-10-15 03:09:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1256 transitions. [2019-10-15 03:09:55,060 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1256 transitions. Word has length 112 [2019-10-15 03:09:55,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:55,061 INFO L462 AbstractCegarLoop]: Abstraction has 837 states and 1256 transitions. [2019-10-15 03:09:55,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:55,062 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1256 transitions. [2019-10-15 03:09:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 03:09:55,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:55,074 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:55,283 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:55,283 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:55,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:55,283 INFO L82 PathProgramCache]: Analyzing trace with hash 343984818, now seen corresponding path program 1 times [2019-10-15 03:09:55,284 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:55,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766155222] [2019-10-15 03:09:55,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:55,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:55,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:09:55,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766155222] [2019-10-15 03:09:55,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421108159] [2019-10-15 03:09:55,617 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 03:09:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:56,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 3013 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 03:09:56,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:56,408 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:09:56,643 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:56,644 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [7] total 10 [2019-10-15 03:09:56,644 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288142161] [2019-10-15 03:09:56,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:09:56,647 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:56,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:09:56,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:56,648 INFO L87 Difference]: Start difference. First operand 837 states and 1256 transitions. Second operand 5 states. [2019-10-15 03:09:59,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:59,325 INFO L93 Difference]: Finished difference Result 3196 states and 4897 transitions. [2019-10-15 03:09:59,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:09:59,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2019-10-15 03:09:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:59,353 INFO L225 Difference]: With dead ends: 3196 [2019-10-15 03:09:59,354 INFO L226 Difference]: Without dead ends: 2390 [2019-10-15 03:09:59,365 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2019-10-15 03:09:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2340. [2019-10-15 03:09:59,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2340 states. [2019-10-15 03:09:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 3483 transitions. [2019-10-15 03:09:59,531 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 3483 transitions. Word has length 113 [2019-10-15 03:09:59,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:59,532 INFO L462 AbstractCegarLoop]: Abstraction has 2340 states and 3483 transitions. [2019-10-15 03:09:59,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:09:59,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 3483 transitions. [2019-10-15 03:09:59,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:09:59,538 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:59,539 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:59,751 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:59,751 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:59,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:59,752 INFO L82 PathProgramCache]: Analyzing trace with hash -483217119, now seen corresponding path program 1 times [2019-10-15 03:09:59,752 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:59,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450737520] [2019-10-15 03:09:59,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:59,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:59,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:10:00,073 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450737520] [2019-10-15 03:10:00,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432243091] [2019-10-15 03:10:00,074 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 03:10:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:00,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 03:10:00,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:10:00,821 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:00,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 03:10:01,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:10:01,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 03:10:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:10:01,269 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:10:01,270 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-10-15 03:10:01,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156962779] [2019-10-15 03:10:01,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 03:10:01,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:01,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 03:10:01,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:10:01,273 INFO L87 Difference]: Start difference. First operand 2340 states and 3483 transitions. Second operand 11 states. [2019-10-15 03:10:03,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:03,644 INFO L93 Difference]: Finished difference Result 4405 states and 6612 transitions. [2019-10-15 03:10:03,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:10:03,645 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 118 [2019-10-15 03:10:03,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:03,670 INFO L225 Difference]: With dead ends: 4405 [2019-10-15 03:10:03,670 INFO L226 Difference]: Without dead ends: 2652 [2019-10-15 03:10:03,682 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 226 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:10:03,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2019-10-15 03:10:03,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2524. [2019-10-15 03:10:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2524 states. [2019-10-15 03:10:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3735 transitions. [2019-10-15 03:10:03,819 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3735 transitions. Word has length 118 [2019-10-15 03:10:03,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:03,820 INFO L462 AbstractCegarLoop]: Abstraction has 2524 states and 3735 transitions. [2019-10-15 03:10:03,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 03:10:03,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3735 transitions. [2019-10-15 03:10:03,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:10:03,825 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:03,825 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:04,041 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:04,042 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:04,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:04,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1170444739, now seen corresponding path program 1 times [2019-10-15 03:10:04,044 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:04,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901365296] [2019-10-15 03:10:04,044 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:04,044 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:04,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:10:04,318 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901365296] [2019-10-15 03:10:04,318 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795879214] [2019-10-15 03:10:04,319 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 03:10:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:04,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 3018 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:10:04,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:10:05,094 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:05,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:10:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:10:05,401 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:10:05,401 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 13 [2019-10-15 03:10:05,402 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308856891] [2019-10-15 03:10:05,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:10:05,402 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:05,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:10:05,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:10:05,403 INFO L87 Difference]: Start difference. First operand 2524 states and 3735 transitions. Second operand 8 states. [2019-10-15 03:10:05,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:05,771 INFO L93 Difference]: Finished difference Result 4981 states and 7473 transitions. [2019-10-15 03:10:05,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:10:05,772 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2019-10-15 03:10:05,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:05,799 INFO L225 Difference]: With dead ends: 4981 [2019-10-15 03:10:05,800 INFO L226 Difference]: Without dead ends: 3012 [2019-10-15 03:10:05,814 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 229 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:10:05,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2019-10-15 03:10:05,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 3012. [2019-10-15 03:10:05,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3012 states. [2019-10-15 03:10:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 4479 transitions. [2019-10-15 03:10:05,967 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 4479 transitions. Word has length 118 [2019-10-15 03:10:05,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:05,967 INFO L462 AbstractCegarLoop]: Abstraction has 3012 states and 4479 transitions. [2019-10-15 03:10:05,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:10:05,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 4479 transitions. [2019-10-15 03:10:05,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:10:05,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:05,973 INFO L380 BasicCegarLoop]: trace histogram [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 03:10:06,181 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:06,182 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:06,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:06,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1768528239, now seen corresponding path program 1 times [2019-10-15 03:10:06,183 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:06,183 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888842624] [2019-10-15 03:10:06,183 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:06,183 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:06,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:10:06,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888842624] [2019-10-15 03:10:06,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412611833] [2019-10-15 03:10:06,357 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 03:10:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:06,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 3018 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:10:06,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:10:06,999 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:10:07,110 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:10:07,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [7] total 7 [2019-10-15 03:10:07,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544064093] [2019-10-15 03:10:07,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:10:07,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:07,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:10:07,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:07,114 INFO L87 Difference]: Start difference. First operand 3012 states and 4479 transitions. Second operand 4 states. [2019-10-15 03:10:08,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:08,992 INFO L93 Difference]: Finished difference Result 11549 states and 17701 transitions. [2019-10-15 03:10:08,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:10:08,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-15 03:10:08,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:09,104 INFO L225 Difference]: With dead ends: 11549 [2019-10-15 03:10:09,104 INFO L226 Difference]: Without dead ends: 8609 [2019-10-15 03:10:09,144 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8609 states. [2019-10-15 03:10:09,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8609 to 8470. [2019-10-15 03:10:09,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8470 states. [2019-10-15 03:10:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 12850 transitions. [2019-10-15 03:10:10,027 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 12850 transitions. Word has length 119 [2019-10-15 03:10:10,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:10,028 INFO L462 AbstractCegarLoop]: Abstraction has 8470 states and 12850 transitions. [2019-10-15 03:10:10,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:10:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 12850 transitions. [2019-10-15 03:10:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:10:10,033 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:10,033 INFO L380 BasicCegarLoop]: trace histogram [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 03:10:10,253 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:10,254 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:10,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:10,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1185474952, now seen corresponding path program 1 times [2019-10-15 03:10:10,255 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:10,256 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736943551] [2019-10-15 03:10:10,256 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:10,256 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:10,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:10:10,516 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736943551] [2019-10-15 03:10:10,517 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68687904] [2019-10-15 03:10:10,517 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 03:10:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:11,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-15 03:10:11,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:11,462 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-10-15 03:10:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:10:11,529 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:12,172 WARN L191 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-10-15 03:10:12,557 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-15 03:10:12,848 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-10-15 03:10:13,212 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-15 03:10:13,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:10:13,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:10:13,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:10:13,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:10:13,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:10:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:10:13,397 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:10:13,397 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 13 [2019-10-15 03:10:13,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486721349] [2019-10-15 03:10:13,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:10:13,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:13,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:10:13,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:10:13,399 INFO L87 Difference]: Start difference. First operand 8470 states and 12850 transitions. Second operand 6 states. [2019-10-15 03:10:15,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:15,657 INFO L93 Difference]: Finished difference Result 17048 states and 25944 transitions. [2019-10-15 03:10:15,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:10:15,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2019-10-15 03:10:15,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:15,732 INFO L225 Difference]: With dead ends: 17048 [2019-10-15 03:10:15,733 INFO L226 Difference]: Without dead ends: 8609 [2019-10-15 03:10:15,790 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:10:15,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8609 states. [2019-10-15 03:10:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8609 to 8470. [2019-10-15 03:10:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8470 states. [2019-10-15 03:10:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 12847 transitions. [2019-10-15 03:10:16,553 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 12847 transitions. Word has length 121 [2019-10-15 03:10:16,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:16,553 INFO L462 AbstractCegarLoop]: Abstraction has 8470 states and 12847 transitions. [2019-10-15 03:10:16,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:10:16,554 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 12847 transitions. [2019-10-15 03:10:16,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-15 03:10:16,559 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:16,559 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:10:16,768 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:16,768 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:16,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:16,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1854972425, now seen corresponding path program 1 times [2019-10-15 03:10:16,769 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:16,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786334209] [2019-10-15 03:10:16,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:16,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:16,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:10:17,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786334209] [2019-10-15 03:10:17,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412921504] [2019-10-15 03:10:17,063 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 03:10:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:17,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 3030 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:10:17,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:10:17,690 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:10:17,905 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:10:17,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-15 03:10:17,906 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187318511] [2019-10-15 03:10:17,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:10:17,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:17,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:10:17,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:10:17,908 INFO L87 Difference]: Start difference. First operand 8470 states and 12847 transitions. Second operand 4 states. [2019-10-15 03:10:18,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:18,297 INFO L93 Difference]: Finished difference Result 17179 states and 26331 transitions. [2019-10-15 03:10:18,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:10:18,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-15 03:10:18,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:18,373 INFO L225 Difference]: With dead ends: 17179 [2019-10-15 03:10:18,373 INFO L226 Difference]: Without dead ends: 8740 [2019-10-15 03:10:18,405 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:10:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8740 states. [2019-10-15 03:10:19,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8740 to 8569. [2019-10-15 03:10:19,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8569 states. [2019-10-15 03:10:19,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8569 states to 8569 states and 12964 transitions. [2019-10-15 03:10:19,709 INFO L78 Accepts]: Start accepts. Automaton has 8569 states and 12964 transitions. Word has length 122 [2019-10-15 03:10:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:19,709 INFO L462 AbstractCegarLoop]: Abstraction has 8569 states and 12964 transitions. [2019-10-15 03:10:19,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:10:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 8569 states and 12964 transitions. [2019-10-15 03:10:19,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:10:19,714 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:19,715 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:10:19,924 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:19,925 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:19,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:19,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1522690234, now seen corresponding path program 1 times [2019-10-15 03:10:19,926 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:19,926 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778896704] [2019-10-15 03:10:19,926 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:19,927 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:19,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat