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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:12:05,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:12:05,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:12:05,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:12:05,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:12:05,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:12:05,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:12:05,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:12:05,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:12:05,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:12:05,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:12:05,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:12:05,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:12:05,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:12:05,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:12:05,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:12:05,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:12:05,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:12:05,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:12:05,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:12:05,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:12:05,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:12:05,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:12:05,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:12:05,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:12:05,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:12:05,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:12:05,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:12:05,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:12:05,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:12:05,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:12:05,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:12:05,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:12:05,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:12:05,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:12:05,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:12:05,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:12:05,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:12:05,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:12:05,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:12:05,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:12:05,948 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 [2019-10-13 21:12:05,969 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:12:05,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:12:05,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:12:05,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:12:05,975 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:12:05,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:12:05,975 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:12:05,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:12:05,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:12:05,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:12:05,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:12:05,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:12:05,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:12:05,978 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:12:05,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:12:05,979 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:12:05,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:12:05,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:12:05,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:12:05,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:12:05,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:12:05,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:05,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:12:05,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:12:05,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:12:05,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:12:05,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:12:05,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:12:05,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:12:06,301 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:12:06,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:12:06,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:12:06,319 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:12:06,320 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:12:06,320 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product32.cil.c [2019-10-13 21:12:06,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bac5316a/4012d25ec9e946e190994c269bd27b76/FLAGa42abeaa7 [2019-10-13 21:12:07,100 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:12:07,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product32.cil.c [2019-10-13 21:12:07,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bac5316a/4012d25ec9e946e190994c269bd27b76/FLAGa42abeaa7 [2019-10-13 21:12:07,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bac5316a/4012d25ec9e946e190994c269bd27b76 [2019-10-13 21:12:07,216 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:12:07,219 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:12:07,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:07,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:12:07,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:12:07,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@152e91c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07, skipping insertion in model container [2019-10-13 21:12:07,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,238 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:12:07,333 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:12:08,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:08,109 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:12:08,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:08,354 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:12:08,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08 WrapperNode [2019-10-13 21:12:08,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:08,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:12:08,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:12:08,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:12:08,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:08,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:08,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:08,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:08,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:08,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:08,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:08,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:12:08,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:12:08,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:12:08,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:12:08,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (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 [2019-10-13 21:12:08,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:12:08,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:12:08,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:08,673 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:12:08,674 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:12:08,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:12:08,675 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:12:08,675 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:12:08,676 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:12:08,677 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:12:08,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:08,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:08,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:08,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:12:08,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:12:08,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:12:08,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:12:08,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:12:08,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:12:08,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:12:08,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:12:08,686 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:12:08,686 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:12:08,686 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:12:08,687 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:12:08,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:12:08,687 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:12:08,688 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:12:08,688 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:12:08,688 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:12:08,688 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:12:08,689 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:12:08,689 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:12:08,689 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:12:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:12:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:12:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:12:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:12:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:12:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:12:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:12:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:12:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:12:08,693 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:12:08,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:12:08,693 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:12:08,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:12:08,694 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:12:08,694 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:12:08,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:12:08,694 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 21:12:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:12:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:12:08,697 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 21:12:08,697 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:12:08,697 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:12:08,698 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:12:08,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:12:08,698 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:12:08,699 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:12:08,699 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:12:08,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:12:08,700 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:12:08,701 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:12:08,701 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:12:08,701 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 21:12:08,702 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:12:08,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:12:08,702 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:12:08,702 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:12:08,703 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 21:12:08,703 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:08,703 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:12:08,705 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:12:08,705 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 21:12:08,705 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:12:08,705 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 21:12:08,706 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:12:08,706 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:12:08,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 21:12:08,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 21:12:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:12:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:12:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:12:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:12:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:12:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:12:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:12:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:12:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:12:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:12:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:12:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:12:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:12:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:12:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:12:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:12:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:12:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:12:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:12:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:12:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:12:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:12:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:12:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:12:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:12:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:12:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:12:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:12:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:12:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:12:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:12:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:12:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:12:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:12:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:12:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:12:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:12:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:12:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:12:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:12:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:12:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:12:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:12:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:12:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:12:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:12:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:12:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:12:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:12:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:12:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:12:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:12:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:12:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:12:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:12:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:12:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:12:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:12:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:12:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:12:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:12:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:12:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:12:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:12:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:12:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:12:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:12:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:12:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 21:12:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 21:12:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 21:12:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:12:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 21:12:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:12:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:12:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:12:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:12:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:12:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 21:12:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:12:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:12:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:12:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 21:12:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:12:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:12:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 21:12:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 21:12:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:12:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:12:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:12:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:12:11,600 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:12:11,600 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:12:11,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:11 BoogieIcfgContainer [2019-10-13 21:12:11,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:12:11,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:12:11,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:12:11,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:12:11,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:12:07" (1/3) ... [2019-10-13 21:12:11,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397510a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:11, skipping insertion in model container [2019-10-13 21:12:11,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (2/3) ... [2019-10-13 21:12:11,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397510a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:11, skipping insertion in model container [2019-10-13 21:12:11,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:11" (3/3) ... [2019-10-13 21:12:11,612 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product32.cil.c [2019-10-13 21:12:11,623 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:12:11,634 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:12:11,646 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:12:11,695 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:12:11,695 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:12:11,695 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:12:11,695 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:12:11,696 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:12:11,696 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:12:11,696 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:12:11,696 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:12:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states. [2019-10-13 21:12:11,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 21:12:11,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:11,772 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] [2019-10-13 21:12:11,777 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:11,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:11,784 INFO L82 PathProgramCache]: Analyzing trace with hash 250994397, now seen corresponding path program 1 times [2019-10-13 21:12:11,798 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:11,798 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483629907] [2019-10-13 21:12:11,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:11,799 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:11,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:12,592 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483629907] [2019-10-13 21:12:12,593 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:12,593 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:12,594 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267815453] [2019-10-13 21:12:12,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:12,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:12,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:12,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:12,619 INFO L87 Difference]: Start difference. First operand 856 states. Second operand 7 states. [2019-10-13 21:12:12,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:12,885 INFO L93 Difference]: Finished difference Result 1377 states and 2196 transitions. [2019-10-13 21:12:12,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:12,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-10-13 21:12:12,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:12,923 INFO L225 Difference]: With dead ends: 1377 [2019-10-13 21:12:12,923 INFO L226 Difference]: Without dead ends: 697 [2019-10-13 21:12:12,938 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-13 21:12:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2019-10-13 21:12:13,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-13 21:12:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1093 transitions. [2019-10-13 21:12:13,072 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1093 transitions. Word has length 93 [2019-10-13 21:12:13,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:13,073 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 1093 transitions. [2019-10-13 21:12:13,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:13,073 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1093 transitions. [2019-10-13 21:12:13,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:12:13,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:13,079 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] [2019-10-13 21:12:13,079 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:13,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:13,080 INFO L82 PathProgramCache]: Analyzing trace with hash -435355313, now seen corresponding path program 1 times [2019-10-13 21:12:13,080 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:13,080 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514082102] [2019-10-13 21:12:13,080 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,081 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:13,400 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514082102] [2019-10-13 21:12:13,400 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:13,400 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:13,400 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111424549] [2019-10-13 21:12:13,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:13,406 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:13,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:13,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:13,408 INFO L87 Difference]: Start difference. First operand 695 states and 1093 transitions. Second operand 4 states. [2019-10-13 21:12:13,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:13,528 INFO L93 Difference]: Finished difference Result 1356 states and 2151 transitions. [2019-10-13 21:12:13,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:13,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-13 21:12:13,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:13,536 INFO L225 Difference]: With dead ends: 1356 [2019-10-13 21:12:13,537 INFO L226 Difference]: Without dead ends: 677 [2019-10-13 21:12:13,542 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:13,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2019-10-13 21:12:13,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2019-10-13 21:12:13,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2019-10-13 21:12:13,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1060 transitions. [2019-10-13 21:12:13,584 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1060 transitions. Word has length 94 [2019-10-13 21:12:13,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:13,584 INFO L462 AbstractCegarLoop]: Abstraction has 677 states and 1060 transitions. [2019-10-13 21:12:13,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:13,584 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1060 transitions. [2019-10-13 21:12:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:12:13,588 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:13,588 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] [2019-10-13 21:12:13,588 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:13,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:13,589 INFO L82 PathProgramCache]: Analyzing trace with hash 846583857, now seen corresponding path program 1 times [2019-10-13 21:12:13,589 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:13,589 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163168105] [2019-10-13 21:12:13,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:13,797 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163168105] [2019-10-13 21:12:13,797 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:13,797 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:13,798 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331905984] [2019-10-13 21:12:13,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:13,801 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:13,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:13,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:13,801 INFO L87 Difference]: Start difference. First operand 677 states and 1060 transitions. Second operand 7 states. [2019-10-13 21:12:13,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:13,929 INFO L93 Difference]: Finished difference Result 1325 states and 2093 transitions. [2019-10-13 21:12:13,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:13,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-10-13 21:12:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:13,937 INFO L225 Difference]: With dead ends: 1325 [2019-10-13 21:12:13,938 INFO L226 Difference]: Without dead ends: 671 [2019-10-13 21:12:13,942 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2019-10-13 21:12:13,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2019-10-13 21:12:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2019-10-13 21:12:13,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1047 transitions. [2019-10-13 21:12:13,989 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1047 transitions. Word has length 94 [2019-10-13 21:12:13,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:13,991 INFO L462 AbstractCegarLoop]: Abstraction has 671 states and 1047 transitions. [2019-10-13 21:12:13,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:13,991 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1047 transitions. [2019-10-13 21:12:13,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 21:12:13,993 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:13,994 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] [2019-10-13 21:12:13,994 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:13,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:13,995 INFO L82 PathProgramCache]: Analyzing trace with hash -24823679, now seen corresponding path program 1 times [2019-10-13 21:12:13,995 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:13,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28046728] [2019-10-13 21:12:13,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:14,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28046728] [2019-10-13 21:12:14,167 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:14,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:14,168 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959477134] [2019-10-13 21:12:14,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:14,169 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:14,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:14,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:14,171 INFO L87 Difference]: Start difference. First operand 671 states and 1047 transitions. Second operand 7 states. [2019-10-13 21:12:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,297 INFO L93 Difference]: Finished difference Result 1313 states and 2067 transitions. [2019-10-13 21:12:14,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:14,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-13 21:12:14,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,316 INFO L225 Difference]: With dead ends: 1313 [2019-10-13 21:12:14,316 INFO L226 Difference]: Without dead ends: 665 [2019-10-13 21:12:14,322 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2019-10-13 21:12:14,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2019-10-13 21:12:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2019-10-13 21:12:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1034 transitions. [2019-10-13 21:12:14,411 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1034 transitions. Word has length 95 [2019-10-13 21:12:14,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:14,412 INFO L462 AbstractCegarLoop]: Abstraction has 665 states and 1034 transitions. [2019-10-13 21:12:14,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:14,412 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1034 transitions. [2019-10-13 21:12:14,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:12:14,420 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:14,420 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] [2019-10-13 21:12:14,421 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:14,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:14,421 INFO L82 PathProgramCache]: Analyzing trace with hash 871502165, now seen corresponding path program 1 times [2019-10-13 21:12:14,421 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:14,422 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739441736] [2019-10-13 21:12:14,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:14,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739441736] [2019-10-13 21:12:14,574 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:14,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:14,574 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566187522] [2019-10-13 21:12:14,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:14,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:14,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:14,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:14,576 INFO L87 Difference]: Start difference. First operand 665 states and 1034 transitions. Second operand 7 states. [2019-10-13 21:12:14,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,670 INFO L93 Difference]: Finished difference Result 1301 states and 2041 transitions. [2019-10-13 21:12:14,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:14,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-13 21:12:14,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,682 INFO L225 Difference]: With dead ends: 1301 [2019-10-13 21:12:14,682 INFO L226 Difference]: Without dead ends: 659 [2019-10-13 21:12:14,688 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:14,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-13 21:12:14,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2019-10-13 21:12:14,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-13 21:12:14,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1021 transitions. [2019-10-13 21:12:14,714 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1021 transitions. Word has length 96 [2019-10-13 21:12:14,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:14,715 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 1021 transitions. [2019-10-13 21:12:14,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:14,717 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1021 transitions. [2019-10-13 21:12:14,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:12:14,718 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:14,719 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] [2019-10-13 21:12:14,721 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:14,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:14,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2034523306, now seen corresponding path program 1 times [2019-10-13 21:12:14,722 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:14,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581506142] [2019-10-13 21:12:14,722 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,722 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:14,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581506142] [2019-10-13 21:12:14,887 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:14,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:14,888 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715833214] [2019-10-13 21:12:14,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:14,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:14,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:14,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:14,889 INFO L87 Difference]: Start difference. First operand 659 states and 1021 transitions. Second operand 7 states. [2019-10-13 21:12:14,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,983 INFO L93 Difference]: Finished difference Result 1289 states and 2015 transitions. [2019-10-13 21:12:14,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:14,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-13 21:12:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,989 INFO L225 Difference]: With dead ends: 1289 [2019-10-13 21:12:14,989 INFO L226 Difference]: Without dead ends: 659 [2019-10-13 21:12:14,993 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-13 21:12:15,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2019-10-13 21:12:15,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-13 21:12:15,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1020 transitions. [2019-10-13 21:12:15,018 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1020 transitions. Word has length 96 [2019-10-13 21:12:15,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:15,019 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 1020 transitions. [2019-10-13 21:12:15,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:15,019 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1020 transitions. [2019-10-13 21:12:15,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 21:12:15,021 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:15,021 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] [2019-10-13 21:12:15,021 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:15,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:15,022 INFO L82 PathProgramCache]: Analyzing trace with hash 732987941, now seen corresponding path program 1 times [2019-10-13 21:12:15,022 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:15,022 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793337078] [2019-10-13 21:12:15,022 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,022 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:15,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793337078] [2019-10-13 21:12:15,209 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:15,209 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:15,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467676295] [2019-10-13 21:12:15,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:15,210 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:15,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:15,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:15,210 INFO L87 Difference]: Start difference. First operand 659 states and 1020 transitions. Second operand 5 states. [2019-10-13 21:12:15,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:15,295 INFO L93 Difference]: Finished difference Result 1288 states and 2012 transitions. [2019-10-13 21:12:15,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:15,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-13 21:12:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:15,300 INFO L225 Difference]: With dead ends: 1288 [2019-10-13 21:12:15,301 INFO L226 Difference]: Without dead ends: 659 [2019-10-13 21:12:15,304 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:15,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-13 21:12:15,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2019-10-13 21:12:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-13 21:12:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1019 transitions. [2019-10-13 21:12:15,332 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1019 transitions. Word has length 97 [2019-10-13 21:12:15,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:15,333 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 1019 transitions. [2019-10-13 21:12:15,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:15,333 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1019 transitions. [2019-10-13 21:12:15,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 21:12:15,334 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:15,335 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] [2019-10-13 21:12:15,335 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:15,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:15,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1341451385, now seen corresponding path program 1 times [2019-10-13 21:12:15,336 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:15,336 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175901016] [2019-10-13 21:12:15,336 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,336 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:15,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175901016] [2019-10-13 21:12:15,466 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:15,466 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:15,467 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325787841] [2019-10-13 21:12:15,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:15,467 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:15,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:15,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:15,468 INFO L87 Difference]: Start difference. First operand 659 states and 1019 transitions. Second operand 5 states. [2019-10-13 21:12:15,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:15,546 INFO L93 Difference]: Finished difference Result 1288 states and 2010 transitions. [2019-10-13 21:12:15,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:15,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-10-13 21:12:15,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:15,552 INFO L225 Difference]: With dead ends: 1288 [2019-10-13 21:12:15,552 INFO L226 Difference]: Without dead ends: 659 [2019-10-13 21:12:15,555 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:15,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-13 21:12:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2019-10-13 21:12:15,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-13 21:12:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1018 transitions. [2019-10-13 21:12:15,581 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1018 transitions. Word has length 98 [2019-10-13 21:12:15,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:15,582 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 1018 transitions. [2019-10-13 21:12:15,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:15,582 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1018 transitions. [2019-10-13 21:12:15,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 21:12:15,586 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:15,586 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] [2019-10-13 21:12:15,587 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:15,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:15,587 INFO L82 PathProgramCache]: Analyzing trace with hash -671623232, now seen corresponding path program 1 times [2019-10-13 21:12:15,587 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:15,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853856012] [2019-10-13 21:12:15,588 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,588 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:15,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853856012] [2019-10-13 21:12:15,742 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:15,742 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:15,743 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148436132] [2019-10-13 21:12:15,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:15,744 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:15,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:15,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:15,745 INFO L87 Difference]: Start difference. First operand 659 states and 1018 transitions. Second operand 5 states. [2019-10-13 21:12:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:15,827 INFO L93 Difference]: Finished difference Result 1288 states and 2008 transitions. [2019-10-13 21:12:15,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:15,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-10-13 21:12:15,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:15,834 INFO L225 Difference]: With dead ends: 1288 [2019-10-13 21:12:15,834 INFO L226 Difference]: Without dead ends: 659 [2019-10-13 21:12:15,838 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-13 21:12:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2019-10-13 21:12:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-13 21:12:15,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1017 transitions. [2019-10-13 21:12:15,862 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1017 transitions. Word has length 99 [2019-10-13 21:12:15,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:15,862 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 1017 transitions. [2019-10-13 21:12:15,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:15,863 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1017 transitions. [2019-10-13 21:12:15,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 21:12:15,865 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:15,865 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] [2019-10-13 21:12:15,865 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:15,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:15,866 INFO L82 PathProgramCache]: Analyzing trace with hash -828849150, now seen corresponding path program 1 times [2019-10-13 21:12:15,866 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:15,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699853457] [2019-10-13 21:12:15,866 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,867 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:16,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699853457] [2019-10-13 21:12:16,030 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:16,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:16,031 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222527710] [2019-10-13 21:12:16,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:16,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:16,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:16,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:16,032 INFO L87 Difference]: Start difference. First operand 659 states and 1017 transitions. Second operand 5 states. [2019-10-13 21:12:16,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:16,098 INFO L93 Difference]: Finished difference Result 1288 states and 2006 transitions. [2019-10-13 21:12:16,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:16,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-13 21:12:16,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:16,104 INFO L225 Difference]: With dead ends: 1288 [2019-10-13 21:12:16,104 INFO L226 Difference]: Without dead ends: 659 [2019-10-13 21:12:16,108 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-13 21:12:16,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2019-10-13 21:12:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-13 21:12:16,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1016 transitions. [2019-10-13 21:12:16,131 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1016 transitions. Word has length 100 [2019-10-13 21:12:16,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:16,132 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 1016 transitions. [2019-10-13 21:12:16,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:16,132 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1016 transitions. [2019-10-13 21:12:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 21:12:16,133 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:16,134 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] [2019-10-13 21:12:16,134 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:16,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:16,134 INFO L82 PathProgramCache]: Analyzing trace with hash -854947493, now seen corresponding path program 1 times [2019-10-13 21:12:16,134 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:16,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427482718] [2019-10-13 21:12:16,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:16,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:16,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:12:16,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427482718] [2019-10-13 21:12:16,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951210631] [2019-10-13 21:12:16,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-10-13 21:12:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:16,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:12:17,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:17,059 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:17,191 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:17,191 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:12:17,192 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081322985] [2019-10-13 21:12:17,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:17,193 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:17,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:17,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:17,193 INFO L87 Difference]: Start difference. First operand 659 states and 1016 transitions. Second operand 3 states. [2019-10-13 21:12:17,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:17,283 INFO L93 Difference]: Finished difference Result 1856 states and 2908 transitions. [2019-10-13 21:12:17,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:17,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2019-10-13 21:12:17,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:17,294 INFO L225 Difference]: With dead ends: 1856 [2019-10-13 21:12:17,294 INFO L226 Difference]: Without dead ends: 1231 [2019-10-13 21:12:17,298 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:17,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2019-10-13 21:12:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1218. [2019-10-13 21:12:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2019-10-13 21:12:17,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1895 transitions. [2019-10-13 21:12:17,369 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1895 transitions. Word has length 101 [2019-10-13 21:12:17,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:17,371 INFO L462 AbstractCegarLoop]: Abstraction has 1218 states and 1895 transitions. [2019-10-13 21:12:17,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1895 transitions. [2019-10-13 21:12:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 21:12:17,373 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:17,373 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] [2019-10-13 21:12:17,580 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:17,581 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:17,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1356324602, now seen corresponding path program 1 times [2019-10-13 21:12:17,582 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:17,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700841495] [2019-10-13 21:12:17,582 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:17,583 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:17,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:12:17,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700841495] [2019-10-13 21:12:17,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409096926] [2019-10-13 21:12:17,775 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 [2019-10-13 21:12:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:18,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:12:18,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:18,687 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:18,785 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:18,785 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:12:18,786 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888327481] [2019-10-13 21:12:18,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:18,787 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:18,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:18,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:18,788 INFO L87 Difference]: Start difference. First operand 1218 states and 1895 transitions. Second operand 3 states. [2019-10-13 21:12:18,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:18,905 INFO L93 Difference]: Finished difference Result 2974 states and 4668 transitions. [2019-10-13 21:12:18,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:18,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-10-13 21:12:18,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:18,920 INFO L225 Difference]: With dead ends: 2974 [2019-10-13 21:12:18,920 INFO L226 Difference]: Without dead ends: 1790 [2019-10-13 21:12:18,927 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:18,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2019-10-13 21:12:18,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1741. [2019-10-13 21:12:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1741 states. [2019-10-13 21:12:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2727 transitions. [2019-10-13 21:12:18,997 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2727 transitions. Word has length 102 [2019-10-13 21:12:18,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:18,998 INFO L462 AbstractCegarLoop]: Abstraction has 1741 states and 2727 transitions. [2019-10-13 21:12:18,998 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:18,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2727 transitions. [2019-10-13 21:12:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 21:12:18,999 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:19,000 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] [2019-10-13 21:12:19,214 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:19,215 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:19,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:19,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1616993806, now seen corresponding path program 1 times [2019-10-13 21:12:19,216 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:19,216 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457742524] [2019-10-13 21:12:19,217 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:19,217 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:19,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:19,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457742524] [2019-10-13 21:12:19,372 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:19,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:19,372 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086853827] [2019-10-13 21:12:19,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:19,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:19,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:19,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:19,373 INFO L87 Difference]: Start difference. First operand 1741 states and 2727 transitions. Second operand 7 states. [2019-10-13 21:12:22,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:22,833 INFO L93 Difference]: Finished difference Result 5133 states and 8256 transitions. [2019-10-13 21:12:22,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:22,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2019-10-13 21:12:22,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:22,868 INFO L225 Difference]: With dead ends: 5133 [2019-10-13 21:12:22,868 INFO L226 Difference]: Without dead ends: 3426 [2019-10-13 21:12:22,881 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:22,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2019-10-13 21:12:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3356. [2019-10-13 21:12:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3356 states. [2019-10-13 21:12:23,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 5349 transitions. [2019-10-13 21:12:23,122 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 5349 transitions. Word has length 104 [2019-10-13 21:12:23,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:23,122 INFO L462 AbstractCegarLoop]: Abstraction has 3356 states and 5349 transitions. [2019-10-13 21:12:23,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:23,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 5349 transitions. [2019-10-13 21:12:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 21:12:23,124 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:23,124 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] [2019-10-13 21:12:23,125 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:23,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:23,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1816468707, now seen corresponding path program 1 times [2019-10-13 21:12:23,126 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:23,126 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926858496] [2019-10-13 21:12:23,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:23,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:23,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:12:23,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926858496] [2019-10-13 21:12:23,299 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320208048] [2019-10-13 21:12:23,299 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 [2019-10-13 21:12:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:23,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:12:23,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:24,095 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:24,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:12:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:24,429 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:24,430 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-13 21:12:24,430 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565194538] [2019-10-13 21:12:24,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:12:24,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:24,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:12:24,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:12:24,432 INFO L87 Difference]: Start difference. First operand 3356 states and 5349 transitions. Second operand 11 states. [2019-10-13 21:12:30,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:30,703 INFO L93 Difference]: Finished difference Result 15098 states and 24580 transitions. [2019-10-13 21:12:30,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:12:30,704 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2019-10-13 21:12:30,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:30,800 INFO L225 Difference]: With dead ends: 15098 [2019-10-13 21:12:30,801 INFO L226 Difference]: Without dead ends: 11776 [2019-10-13 21:12:30,832 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:12:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11776 states. [2019-10-13 21:12:31,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11776 to 11656. [2019-10-13 21:12:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11656 states. [2019-10-13 21:12:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11656 states to 11656 states and 18502 transitions. [2019-10-13 21:12:31,500 INFO L78 Accepts]: Start accepts. Automaton has 11656 states and 18502 transitions. Word has length 105 [2019-10-13 21:12:31,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:31,501 INFO L462 AbstractCegarLoop]: Abstraction has 11656 states and 18502 transitions. [2019-10-13 21:12:31,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:12:31,501 INFO L276 IsEmpty]: Start isEmpty. Operand 11656 states and 18502 transitions. [2019-10-13 21:12:31,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 21:12:31,503 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:31,503 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] [2019-10-13 21:12:31,711 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:31,712 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:31,713 INFO L82 PathProgramCache]: Analyzing trace with hash -858255289, now seen corresponding path program 1 times [2019-10-13 21:12:31,714 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:31,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081255200] [2019-10-13 21:12:31,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:31,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:31,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:31,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081255200] [2019-10-13 21:12:31,905 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:31,906 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:31,906 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592649897] [2019-10-13 21:12:31,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:31,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:31,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:31,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:31,907 INFO L87 Difference]: Start difference. First operand 11656 states and 18502 transitions. Second operand 4 states. [2019-10-13 21:12:32,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:32,339 INFO L93 Difference]: Finished difference Result 23296 states and 37303 transitions. [2019-10-13 21:12:32,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:32,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-10-13 21:12:32,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:32,478 INFO L225 Difference]: With dead ends: 23296 [2019-10-13 21:12:32,479 INFO L226 Difference]: Without dead ends: 11674 [2019-10-13 21:12:32,555 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:32,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11674 states. [2019-10-13 21:12:33,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11674 to 11638. [2019-10-13 21:12:33,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11638 states. [2019-10-13 21:12:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11638 states to 11638 states and 18401 transitions. [2019-10-13 21:12:34,068 INFO L78 Accepts]: Start accepts. Automaton has 11638 states and 18401 transitions. Word has length 105 [2019-10-13 21:12:34,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:34,071 INFO L462 AbstractCegarLoop]: Abstraction has 11638 states and 18401 transitions. [2019-10-13 21:12:34,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:34,072 INFO L276 IsEmpty]: Start isEmpty. Operand 11638 states and 18401 transitions. [2019-10-13 21:12:34,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 21:12:34,075 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:34,075 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:12:34,075 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:34,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:34,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1903052190, now seen corresponding path program 1 times [2019-10-13 21:12:34,076 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:34,076 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966071343] [2019-10-13 21:12:34,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:34,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:34,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 21:12:34,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966071343] [2019-10-13 21:12:34,225 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:34,225 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:34,225 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104368012] [2019-10-13 21:12:34,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:34,226 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:34,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:34,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:34,227 INFO L87 Difference]: Start difference. First operand 11638 states and 18401 transitions. Second operand 7 states. [2019-10-13 21:12:38,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:38,373 INFO L93 Difference]: Finished difference Result 34894 states and 57146 transitions. [2019-10-13 21:12:38,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:38,374 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 21:12:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:38,527 INFO L225 Difference]: With dead ends: 34894 [2019-10-13 21:12:38,527 INFO L226 Difference]: Without dead ends: 23290 [2019-10-13 21:12:38,578 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:38,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23290 states.