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_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:44,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:44,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:44,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:44,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:44,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:44,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:44,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:44,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:44,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:44,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:44,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:44,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:44,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:44,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:44,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:44,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:44,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:44,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:44,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:44,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:44,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:44,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:44,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:44,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:44,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:44,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:44,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:44,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:44,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:44,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:44,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:44,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:44,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:44,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:44,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:44,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:44,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:44,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:44,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:44,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:44,950 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 03:09:44,971 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:44,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:44,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:44,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:44,974 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:44,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:44,974 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:44,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:44,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:44,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:44,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:44,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:44,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:44,977 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:44,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:44,977 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:44,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:44,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:44,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:44,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:44,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:44,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:44,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:44,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:44,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:44,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:44,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:44,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:44,980 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 03:09:45,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:45,323 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:45,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:45,329 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:45,329 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:45,330 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product31.cil.c [2019-10-15 03:09:45,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897e8c5bf/f00771ba3ef34865830be94733ba80c1/FLAG611169091 [2019-10-15 03:09:46,110 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:46,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product31.cil.c [2019-10-15 03:09:46,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897e8c5bf/f00771ba3ef34865830be94733ba80c1/FLAG611169091 [2019-10-15 03:09:46,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897e8c5bf/f00771ba3ef34865830be94733ba80c1 [2019-10-15 03:09:46,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:46,313 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:46,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:46,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:46,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:46,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:46" (1/1) ... [2019-10-15 03:09:46,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4a4cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:46, skipping insertion in model container [2019-10-15 03:09:46,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:46" (1/1) ... [2019-10-15 03:09:46,332 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:46,415 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:47,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:47,319 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:47,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:47,562 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:47,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47 WrapperNode [2019-10-15 03:09:47,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:47,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:47,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:47,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:47,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:47,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:47,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:47,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:47,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:47,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:47,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:47,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:47,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:47,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:47,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:47,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (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 03:09:47,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:47,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:47,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:47,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:47,937 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:47,938 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:47,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:47,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:47,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:47,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:47,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:47,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:47,944 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:47,944 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:47,945 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:47,945 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:47,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:47,946 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:47,946 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:47,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:47,946 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:47,947 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:47,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:47,947 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:47,947 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:47,947 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:47,948 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:47,948 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:47,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:47,949 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:47,949 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:47,949 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:47,949 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:47,949 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:47,950 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:47,950 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:47,950 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:47,950 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:47,950 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:47,951 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:47,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:47,951 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:47,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:47,951 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:47,952 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:09:47,952 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:47,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:47,952 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:47,952 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:47,953 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:09:47,953 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:47,953 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:47,953 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:47,953 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:47,954 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:47,954 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:09:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:09:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:47,959 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:47,959 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:47,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:47,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:47,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:47,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:47,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:47,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:47,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:47,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:47,965 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:47,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:47,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:47,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:47,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:47,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:47,966 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:47,966 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:47,966 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:47,966 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:47,966 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:47,976 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:47,976 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:47,976 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:09:47,976 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:09:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:47,978 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:47,978 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:47,979 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:47,985 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:09:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:09:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:47,988 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:47,988 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:47,989 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:47,989 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:47,989 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:47,989 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:47,989 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:47,989 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:47,989 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:47,990 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:47,990 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:47,990 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:47,990 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:47,990 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:47,990 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:47,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:47,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:47,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:47,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:54,011 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:54,012 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:54,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:54 BoogieIcfgContainer [2019-10-15 03:09:54,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:54,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:54,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:54,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:54,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:46" (1/3) ... [2019-10-15 03:09:54,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3564d40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:54, skipping insertion in model container [2019-10-15 03:09:54,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (2/3) ... [2019-10-15 03:09:54,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3564d40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:54, skipping insertion in model container [2019-10-15 03:09:54,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:54" (3/3) ... [2019-10-15 03:09:54,022 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product31.cil.c [2019-10-15 03:09:54,032 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:54,046 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:54,059 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:54,110 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:54,110 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:54,110 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:54,110 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:54,111 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:54,111 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:54,111 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:54,111 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states. [2019-10-15 03:09:54,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:09:54,178 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:54,180 INFO L380 BasicCegarLoop]: trace histogram [3, 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 03:09:54,184 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:54,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:54,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1110816202, now seen corresponding path program 1 times [2019-10-15 03:09:54,203 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:54,203 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143038174] [2019-10-15 03:09:54,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:54,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:54,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:09:55,242 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143038174] [2019-10-15 03:09:55,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801591032] [2019-10-15 03:09:55,244 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 03:09:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:56,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:56,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:09:56,104 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:56,385 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 03:09:56,386 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:56,386 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2019-10-15 03:09:56,386 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043690299] [2019-10-15 03:09:56,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:56,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:56,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:56,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:56,411 INFO L87 Difference]: Start difference. First operand 625 states. Second operand 4 states. [2019-10-15 03:09:58,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:58,637 INFO L93 Difference]: Finished difference Result 1816 states and 2759 transitions. [2019-10-15 03:09:58,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:09:58,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-15 03:09:58,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:58,676 INFO L225 Difference]: With dead ends: 1816 [2019-10-15 03:09:58,676 INFO L226 Difference]: Without dead ends: 1313 [2019-10-15 03:09:58,689 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:58,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2019-10-15 03:09:58,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1272. [2019-10-15 03:09:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2019-10-15 03:09:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1907 transitions. [2019-10-15 03:09:58,905 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1907 transitions. Word has length 119 [2019-10-15 03:09:58,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:58,907 INFO L462 AbstractCegarLoop]: Abstraction has 1272 states and 1907 transitions. [2019-10-15 03:09:58,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:09:58,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1907 transitions. [2019-10-15 03:09:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:09:58,928 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:58,929 INFO L380 BasicCegarLoop]: trace histogram [3, 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 03:09:59,143 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:59,143 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:59,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:59,144 INFO L82 PathProgramCache]: Analyzing trace with hash 330968778, now seen corresponding path program 1 times [2019-10-15 03:09:59,144 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:59,145 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519831081] [2019-10-15 03:09:59,145 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:59,145 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:59,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:59,460 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 03:09:59,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519831081] [2019-10-15 03:09:59,461 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:59,461 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:09:59,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010130426] [2019-10-15 03:09:59,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:59,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:59,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:59,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:09:59,464 INFO L87 Difference]: Start difference. First operand 1272 states and 1907 transitions. Second operand 7 states. [2019-10-15 03:10:03,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:03,823 INFO L93 Difference]: Finished difference Result 4886 states and 7542 transitions. [2019-10-15 03:10:03,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:10:03,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-15 03:10:03,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:03,864 INFO L225 Difference]: With dead ends: 4886 [2019-10-15 03:10:03,864 INFO L226 Difference]: Without dead ends: 3645 [2019-10-15 03:10:03,879 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:10:03,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2019-10-15 03:10:04,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3543. [2019-10-15 03:10:04,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3543 states. [2019-10-15 03:10:04,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 5442 transitions. [2019-10-15 03:10:04,189 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 5442 transitions. Word has length 119 [2019-10-15 03:10:04,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:04,192 INFO L462 AbstractCegarLoop]: Abstraction has 3543 states and 5442 transitions. [2019-10-15 03:10:04,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:10:04,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 5442 transitions. [2019-10-15 03:10:04,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:10:04,210 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:04,210 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-15 03:10:04,210 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:04,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:04,211 INFO L82 PathProgramCache]: Analyzing trace with hash 968714229, now seen corresponding path program 1 times [2019-10-15 03:10:04,211 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:04,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744663112] [2019-10-15 03:10:04,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:04,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:04,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:04,652 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744663112] [2019-10-15 03:10:04,652 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662921627] [2019-10-15 03:10:04,652 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 03:10:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:05,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:10:05,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:05,355 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:10:05,355 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:05,592 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 03:10:05,593 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:10:05,593 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-15 03:10:05,593 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263595670] [2019-10-15 03:10:05,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:10:05,595 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:05,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:10:05,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:10:05,595 INFO L87 Difference]: Start difference. First operand 3543 states and 5442 transitions. Second operand 4 states. [2019-10-15 03:10:05,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:05,835 INFO L93 Difference]: Finished difference Result 6923 states and 10728 transitions. [2019-10-15 03:10:05,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:10:05,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-15 03:10:05,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:05,865 INFO L225 Difference]: With dead ends: 6923 [2019-10-15 03:10:05,866 INFO L226 Difference]: Without dead ends: 3411 [2019-10-15 03:10:05,898 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 243 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 03:10:05,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2019-10-15 03:10:06,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 3349. [2019-10-15 03:10:06,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3349 states. [2019-10-15 03:10:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 5113 transitions. [2019-10-15 03:10:06,091 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 5113 transitions. Word has length 121 [2019-10-15 03:10:06,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:06,092 INFO L462 AbstractCegarLoop]: Abstraction has 3349 states and 5113 transitions. [2019-10-15 03:10:06,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:10:06,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 5113 transitions. [2019-10-15 03:10:06,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:10:06,099 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:06,099 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:06,307 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:06,307 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:06,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:06,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1549090926, now seen corresponding path program 1 times [2019-10-15 03:10:06,308 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:06,309 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192623413] [2019-10-15 03:10:06,309 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:06,309 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:06,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:10:06,578 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192623413] [2019-10-15 03:10:06,579 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929665441] [2019-10-15 03:10:06,579 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 03:10:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:07,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:10:07,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:10:07,427 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:07,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:10:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:07,936 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:10:07,936 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-15 03:10:07,937 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472882934] [2019-10-15 03:10:07,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:10:07,938 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:07,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:10:07,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:10:07,939 INFO L87 Difference]: Start difference. First operand 3349 states and 5113 transitions. Second operand 6 states. [2019-10-15 03:10:11,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:11,115 INFO L93 Difference]: Finished difference Result 8924 states and 13939 transitions. [2019-10-15 03:10:11,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:10:11,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-15 03:10:11,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:11,163 INFO L225 Difference]: With dead ends: 8924 [2019-10-15 03:10:11,163 INFO L226 Difference]: Without dead ends: 5606 [2019-10-15 03:10:11,193 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:10:11,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2019-10-15 03:10:11,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5569. [2019-10-15 03:10:11,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5569 states. [2019-10-15 03:10:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 8410 transitions. [2019-10-15 03:10:11,463 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 8410 transitions. Word has length 120 [2019-10-15 03:10:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:11,463 INFO L462 AbstractCegarLoop]: Abstraction has 5569 states and 8410 transitions. [2019-10-15 03:10:11,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:10:11,464 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 8410 transitions. [2019-10-15 03:10:11,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:10:11,467 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:11,467 INFO L380 BasicCegarLoop]: trace histogram [3, 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 03:10:11,676 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:11,677 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:11,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:11,678 INFO L82 PathProgramCache]: Analyzing trace with hash -739146545, now seen corresponding path program 1 times [2019-10-15 03:10:11,678 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:11,679 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044686288] [2019-10-15 03:10:11,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:11,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:11,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:10:11,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044686288] [2019-10-15 03:10:11,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323029972] [2019-10-15 03:10:11,996 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 03:10:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:12,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:10:12,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:12,740 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:12,960 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-15 03:10:13,013 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 03:10:13,013 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:10:13,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:10:13,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383674641] [2019-10-15 03:10:13,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:13,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:13,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:13,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:13,015 INFO L87 Difference]: Start difference. First operand 5569 states and 8410 transitions. Second operand 3 states. [2019-10-15 03:10:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:13,276 INFO L93 Difference]: Finished difference Result 12479 states and 18985 transitions. [2019-10-15 03:10:13,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:13,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-15 03:10:13,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:13,337 INFO L225 Difference]: With dead ends: 12479 [2019-10-15 03:10:13,337 INFO L226 Difference]: Without dead ends: 6941 [2019-10-15 03:10:13,367 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:13,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6941 states. [2019-10-15 03:10:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6941 to 5491. [2019-10-15 03:10:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5491 states. [2019-10-15 03:10:13,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5491 states to 5491 states and 8260 transitions. [2019-10-15 03:10:13,657 INFO L78 Accepts]: Start accepts. Automaton has 5491 states and 8260 transitions. Word has length 119 [2019-10-15 03:10:13,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:13,659 INFO L462 AbstractCegarLoop]: Abstraction has 5491 states and 8260 transitions. [2019-10-15 03:10:13,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand 5491 states and 8260 transitions. [2019-10-15 03:10:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 03:10:13,662 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:13,662 INFO L380 BasicCegarLoop]: trace histogram [3, 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 03:10:13,872 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:13,872 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:13,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:13,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1696696706, now seen corresponding path program 1 times [2019-10-15 03:10:13,874 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:13,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938129904] [2019-10-15 03:10:13,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:13,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:13,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 03:10:14,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938129904] [2019-10-15 03:10:14,110 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:14,110 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:10:14,110 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228735567] [2019-10-15 03:10:14,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:10:14,111 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:14,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:10:14,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:10:14,112 INFO L87 Difference]: Start difference. First operand 5491 states and 8260 transitions. Second operand 10 states. [2019-10-15 03:10:19,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:19,429 INFO L93 Difference]: Finished difference Result 19640 states and 30581 transitions. [2019-10-15 03:10:19,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 03:10:19,430 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-15 03:10:19,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:19,574 INFO L225 Difference]: With dead ends: 19640 [2019-10-15 03:10:19,574 INFO L226 Difference]: Without dead ends: 14180 [2019-10-15 03:10:19,611 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:10:19,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14180 states. [2019-10-15 03:10:20,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14180 to 13852. [2019-10-15 03:10:20,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13852 states. [2019-10-15 03:10:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13852 states to 13852 states and 21362 transitions. [2019-10-15 03:10:20,427 INFO L78 Accepts]: Start accepts. Automaton has 13852 states and 21362 transitions. Word has length 125 [2019-10-15 03:10:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:20,431 INFO L462 AbstractCegarLoop]: Abstraction has 13852 states and 21362 transitions. [2019-10-15 03:10:20,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:10:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 13852 states and 21362 transitions. [2019-10-15 03:10:20,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:10:20,438 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:20,438 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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 03:10:20,439 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:20,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:20,439 INFO L82 PathProgramCache]: Analyzing trace with hash 946385200, now seen corresponding path program 1 times [2019-10-15 03:10:20,441 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:20,441 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869229819] [2019-10-15 03:10:20,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:20,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:20,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:10:20,771 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869229819] [2019-10-15 03:10:20,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731572044] [2019-10-15 03:10:20,773 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 03:10:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:21,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-15 03:10:21,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:10:21,577 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:10:21,970 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:10:21,970 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-10-15 03:10:21,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033918927] [2019-10-15 03:10:21,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:10:21,971 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:21,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:10:21,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:10:21,972 INFO L87 Difference]: Start difference. First operand 13852 states and 21362 transitions. Second operand 7 states.