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_spec14_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:08:09,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:08:09,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:08:09,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:08:09,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:08:09,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:08:09,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:08:09,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:08:09,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:08:09,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:08:09,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:08:09,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:08:09,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:08:09,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:08:09,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:08:09,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:08:09,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:08:09,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:08:09,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:08:09,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:08:09,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:08:09,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:08:09,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:08:09,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:08:09,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:08:09,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:08:09,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:08:09,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:08:09,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:08:09,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:08:09,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:08:09,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:08:09,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:08:09,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:08:09,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:08:09,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:08:09,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:08:09,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:08:09,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:08:09,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:08:09,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:08:09,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:08:09,723 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:08:09,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:08:09,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:08:09,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:08:09,725 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:08:09,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:08:09,725 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:08:09,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:08:09,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:08:09,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:08:09,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:08:09,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:08:09,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:08:09,727 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:08:09,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:08:09,727 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:08:09,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:08:09,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:08:09,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:08:09,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:08:09,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:08:09,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:09,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:08:09,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:08:09,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:08:09,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:08:09,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:08:09,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:08:09,730 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 [2019-10-15 01:08:09,981 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:08:09,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:08:10,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:08:10,001 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:08:10,002 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:08:10,002 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product23.cil.c [2019-10-15 01:08:10,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d43beef/5dac0d80df9648eda93c87537968c2aa/FLAGb455f822a [2019-10-15 01:08:10,701 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:08:10,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product23.cil.c [2019-10-15 01:08:10,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d43beef/5dac0d80df9648eda93c87537968c2aa/FLAGb455f822a [2019-10-15 01:08:10,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d43beef/5dac0d80df9648eda93c87537968c2aa [2019-10-15 01:08:10,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:08:10,915 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:08:10,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:10,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:08:10,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:08:10,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:10" (1/1) ... [2019-10-15 01:08:10,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d8693f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:10, skipping insertion in model container [2019-10-15 01:08:10,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:10" (1/1) ... [2019-10-15 01:08:10,932 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:08:11,005 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:08:11,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:11,663 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:08:11,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:11,943 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:08:11,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:11 WrapperNode [2019-10-15 01:08:11,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:11,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:08:11,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:08:11,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:08:11,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:11" (1/1) ... [2019-10-15 01:08:11,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:11" (1/1) ... [2019-10-15 01:08:11,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:11" (1/1) ... [2019-10-15 01:08:11,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:11" (1/1) ... [2019-10-15 01:08:12,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:11" (1/1) ... [2019-10-15 01:08:12,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:11" (1/1) ... [2019-10-15 01:08:12,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:11" (1/1) ... [2019-10-15 01:08:12,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:08:12,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:08:12,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:08:12,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:08:12,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:12,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:08:12,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:08:12,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:12,237 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:08:12,238 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:08:12,238 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:08:12,238 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:08:12,238 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:08:12,238 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:08:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:08:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:08:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:08:12,240 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:08:12,240 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:08:12,240 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:08:12,240 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:08:12,240 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:08:12,241 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:08:12,241 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:08:12,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:08:12,241 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:08:12,242 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:08:12,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-15 01:08:12,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:08:12,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:12,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:12,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:12,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:08:12,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:08:12,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:08:12,243 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:08:12,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:08:12,244 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:08:12,244 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:08:12,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:08:12,245 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:08:12,245 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:08:12,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:08:12,245 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:08:12,245 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:08:12,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:08:12,246 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:08:12,246 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:08:12,246 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:08:12,246 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:08:12,246 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:08:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:08:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:08:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:08:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:08:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:08:12,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:08:12,248 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:08:12,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:08:12,248 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:08:12,248 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:08:12,248 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:08:12,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:08:12,249 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:08:12,249 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:08:12,249 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:08:12,249 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:12,249 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:08:12,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:08:12,250 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:08:12,250 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:08:12,250 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:08:12,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:08:12,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:08:12,251 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:08:12,251 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:08:12,251 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:08:12,251 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:08:12,251 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:08:12,252 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:08:12,252 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:08:12,252 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:08:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:08:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:08:12,253 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:08:12,253 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:08:12,253 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:08:12,253 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:08:12,253 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:08:12,254 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:08:12,254 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:08:12,254 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:08:12,254 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:08:12,254 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:08:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:08:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:08:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:08:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:08:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:08:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:08:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:08:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:08:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:08:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:08:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:08:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:08:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:08:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:08:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:08:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:08:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:08:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:08:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:08:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:08:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:08:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:08:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:08:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:08:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:08:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:08:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:08:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-15 01:08:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:08:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:08:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:08:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:08:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:08:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:08:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:08:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:08:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:12,262 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:12,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:08:12,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:08:12,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:08:12,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:08:12,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:08:12,263 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:08:12,263 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:08:12,263 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:08:12,263 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:08:12,263 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:08:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:08:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:08:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:08:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:08:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:08:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:08:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:08:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:08:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:08:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:08:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:08:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:08:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:08:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:08:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:08:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:08:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:08:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:08:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:08:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:08:12,267 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:08:12,267 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:08:12,267 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:12,267 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:08:12,267 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:08:12,267 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:08:12,267 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:08:12,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:08:12,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:08:12,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:08:14,382 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:08:14,382 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:08:14,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:14 BoogieIcfgContainer [2019-10-15 01:08:14,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:08:14,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:08:14,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:08:14,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:08:14,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:08:10" (1/3) ... [2019-10-15 01:08:14,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f44c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:14, skipping insertion in model container [2019-10-15 01:08:14,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:11" (2/3) ... [2019-10-15 01:08:14,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f44c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:14, skipping insertion in model container [2019-10-15 01:08:14,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:14" (3/3) ... [2019-10-15 01:08:14,393 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product23.cil.c [2019-10-15 01:08:14,403 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:08:14,416 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:08:14,427 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:08:14,476 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:08:14,476 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:08:14,477 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:08:14,477 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:08:14,477 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:08:14,477 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:08:14,477 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:08:14,477 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:08:14,520 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states. [2019-10-15 01:08:14,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 01:08:14,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:14,554 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:14,556 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:14,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1117426819, now seen corresponding path program 1 times [2019-10-15 01:08:14,569 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:14,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839823062] [2019-10-15 01:08:14,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:14,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:14,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:15,199 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:15,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839823062] [2019-10-15 01:08:15,201 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:15,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:15,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121625120] [2019-10-15 01:08:15,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:15,208 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:15,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:15,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:15,225 INFO L87 Difference]: Start difference. First operand 766 states. Second operand 4 states. [2019-10-15 01:08:15,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:15,443 INFO L93 Difference]: Finished difference Result 1230 states and 1960 transitions. [2019-10-15 01:08:15,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:15,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2019-10-15 01:08:15,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:15,477 INFO L225 Difference]: With dead ends: 1230 [2019-10-15 01:08:15,477 INFO L226 Difference]: Without dead ends: 618 [2019-10-15 01:08:15,488 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 [2019-10-15 01:08:15,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2019-10-15 01:08:15,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2019-10-15 01:08:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-10-15 01:08:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 971 transitions. [2019-10-15 01:08:15,592 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 971 transitions. Word has length 135 [2019-10-15 01:08:15,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:15,593 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 971 transitions. [2019-10-15 01:08:15,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 971 transitions. [2019-10-15 01:08:15,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 01:08:15,601 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:15,602 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:15,602 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:15,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:15,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1099628587, now seen corresponding path program 1 times [2019-10-15 01:08:15,603 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:15,603 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102368823] [2019-10-15 01:08:15,603 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:15,603 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:15,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:15,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102368823] [2019-10-15 01:08:15,780 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:15,780 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:15,780 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352772885] [2019-10-15 01:08:15,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:15,782 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:15,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:15,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:15,783 INFO L87 Difference]: Start difference. First operand 618 states and 971 transitions. Second operand 4 states. [2019-10-15 01:08:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:15,861 INFO L93 Difference]: Finished difference Result 1203 states and 1903 transitions. [2019-10-15 01:08:15,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:15,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2019-10-15 01:08:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:15,868 INFO L225 Difference]: With dead ends: 1203 [2019-10-15 01:08:15,868 INFO L226 Difference]: Without dead ends: 618 [2019-10-15 01:08:15,872 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 [2019-10-15 01:08:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2019-10-15 01:08:15,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2019-10-15 01:08:15,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-10-15 01:08:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 970 transitions. [2019-10-15 01:08:15,954 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 970 transitions. Word has length 136 [2019-10-15 01:08:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:15,955 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 970 transitions. [2019-10-15 01:08:15,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 970 transitions. [2019-10-15 01:08:15,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 01:08:15,961 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:15,961 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:15,961 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:15,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:15,962 INFO L82 PathProgramCache]: Analyzing trace with hash 896519935, now seen corresponding path program 1 times [2019-10-15 01:08:15,962 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:15,962 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123397183] [2019-10-15 01:08:15,963 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:15,963 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:15,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:16,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123397183] [2019-10-15 01:08:16,120 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:16,120 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:16,120 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831502521] [2019-10-15 01:08:16,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:16,123 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:16,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:16,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:16,124 INFO L87 Difference]: Start difference. First operand 618 states and 970 transitions. Second operand 4 states. [2019-10-15 01:08:16,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:16,195 INFO L93 Difference]: Finished difference Result 1203 states and 1902 transitions. [2019-10-15 01:08:16,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:16,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2019-10-15 01:08:16,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:16,202 INFO L225 Difference]: With dead ends: 1203 [2019-10-15 01:08:16,202 INFO L226 Difference]: Without dead ends: 618 [2019-10-15 01:08:16,205 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 [2019-10-15 01:08:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2019-10-15 01:08:16,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2019-10-15 01:08:16,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-10-15 01:08:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 969 transitions. [2019-10-15 01:08:16,248 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 969 transitions. Word has length 137 [2019-10-15 01:08:16,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:16,248 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 969 transitions. [2019-10-15 01:08:16,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:16,249 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 969 transitions. [2019-10-15 01:08:16,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 01:08:16,256 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:16,256 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:16,256 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:16,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:16,257 INFO L82 PathProgramCache]: Analyzing trace with hash -756244441, now seen corresponding path program 1 times [2019-10-15 01:08:16,257 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:16,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504876064] [2019-10-15 01:08:16,257 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:16,258 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:16,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:16,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504876064] [2019-10-15 01:08:16,422 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:16,423 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:16,423 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857561677] [2019-10-15 01:08:16,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:16,424 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:16,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:16,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:16,425 INFO L87 Difference]: Start difference. First operand 618 states and 969 transitions. Second operand 4 states. [2019-10-15 01:08:16,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:16,515 INFO L93 Difference]: Finished difference Result 1203 states and 1901 transitions. [2019-10-15 01:08:16,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:16,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2019-10-15 01:08:16,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:16,521 INFO L225 Difference]: With dead ends: 1203 [2019-10-15 01:08:16,521 INFO L226 Difference]: Without dead ends: 618 [2019-10-15 01:08:16,525 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 [2019-10-15 01:08:16,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2019-10-15 01:08:16,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2019-10-15 01:08:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-10-15 01:08:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 968 transitions. [2019-10-15 01:08:16,555 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 968 transitions. Word has length 138 [2019-10-15 01:08:16,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:16,555 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 968 transitions. [2019-10-15 01:08:16,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:16,556 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 968 transitions. [2019-10-15 01:08:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-15 01:08:16,561 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:16,561 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:16,562 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:16,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:16,562 INFO L82 PathProgramCache]: Analyzing trace with hash -103696005, now seen corresponding path program 1 times [2019-10-15 01:08:16,562 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:16,563 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409073477] [2019-10-15 01:08:16,563 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:16,563 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:16,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:16,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409073477] [2019-10-15 01:08:16,808 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:16,808 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:16,809 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140619931] [2019-10-15 01:08:16,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:16,810 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:16,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:16,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:16,811 INFO L87 Difference]: Start difference. First operand 618 states and 968 transitions. Second operand 4 states. [2019-10-15 01:08:16,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:16,906 INFO L93 Difference]: Finished difference Result 1203 states and 1900 transitions. [2019-10-15 01:08:16,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:16,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2019-10-15 01:08:16,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:16,913 INFO L225 Difference]: With dead ends: 1203 [2019-10-15 01:08:16,913 INFO L226 Difference]: Without dead ends: 618 [2019-10-15 01:08:16,917 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 [2019-10-15 01:08:16,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2019-10-15 01:08:16,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2019-10-15 01:08:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-10-15 01:08:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 967 transitions. [2019-10-15 01:08:16,953 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 967 transitions. Word has length 139 [2019-10-15 01:08:16,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:16,953 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 967 transitions. [2019-10-15 01:08:16,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:16,954 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 967 transitions. [2019-10-15 01:08:16,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 01:08:16,961 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:16,961 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:16,962 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:16,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:16,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1000894429, now seen corresponding path program 1 times [2019-10-15 01:08:16,963 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:16,964 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060057065] [2019-10-15 01:08:16,964 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:16,964 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:16,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:17,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060057065] [2019-10-15 01:08:17,189 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:17,189 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:08:17,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999372166] [2019-10-15 01:08:17,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:08:17,190 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:17,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:08:17,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:08:17,191 INFO L87 Difference]: Start difference. First operand 618 states and 967 transitions. Second operand 10 states. [2019-10-15 01:08:17,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:17,378 INFO L93 Difference]: Finished difference Result 1208 states and 1907 transitions. [2019-10-15 01:08:17,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:08:17,379 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 140 [2019-10-15 01:08:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:17,385 INFO L225 Difference]: With dead ends: 1208 [2019-10-15 01:08:17,385 INFO L226 Difference]: Without dead ends: 627 [2019-10-15 01:08:17,389 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:17,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2019-10-15 01:08:17,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 625. [2019-10-15 01:08:17,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2019-10-15 01:08:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 977 transitions. [2019-10-15 01:08:17,419 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 977 transitions. Word has length 140 [2019-10-15 01:08:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:17,420 INFO L462 AbstractCegarLoop]: Abstraction has 625 states and 977 transitions. [2019-10-15 01:08:17,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:08:17,420 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 977 transitions. [2019-10-15 01:08:17,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 01:08:17,425 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:17,425 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:17,425 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:17,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:17,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1987477118, now seen corresponding path program 1 times [2019-10-15 01:08:17,426 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:17,426 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863675130] [2019-10-15 01:08:17,426 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,426 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:17,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863675130] [2019-10-15 01:08:17,612 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:17,612 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:17,612 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36862661] [2019-10-15 01:08:17,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:17,613 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:17,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:17,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:17,614 INFO L87 Difference]: Start difference. First operand 625 states and 977 transitions. Second operand 4 states. [2019-10-15 01:08:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:17,692 INFO L93 Difference]: Finished difference Result 1209 states and 1908 transitions. [2019-10-15 01:08:17,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:17,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2019-10-15 01:08:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:17,700 INFO L225 Difference]: With dead ends: 1209 [2019-10-15 01:08:17,700 INFO L226 Difference]: Without dead ends: 621 [2019-10-15 01:08:17,705 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 [2019-10-15 01:08:17,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-15 01:08:17,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-15 01:08:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-15 01:08:17,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 970 transitions. [2019-10-15 01:08:17,738 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 970 transitions. Word has length 140 [2019-10-15 01:08:17,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:17,739 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 970 transitions. [2019-10-15 01:08:17,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 970 transitions. [2019-10-15 01:08:17,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 01:08:17,744 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:17,745 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:17,745 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:17,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:17,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1145901007, now seen corresponding path program 1 times [2019-10-15 01:08:17,746 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:17,746 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275804517] [2019-10-15 01:08:17,747 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,747 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:17,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275804517] [2019-10-15 01:08:17,896 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:17,896 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:17,896 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159606186] [2019-10-15 01:08:17,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:17,897 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:17,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:17,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:17,898 INFO L87 Difference]: Start difference. First operand 621 states and 970 transitions. Second operand 6 states. [2019-10-15 01:08:18,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:18,176 INFO L93 Difference]: Finished difference Result 1222 states and 1932 transitions. [2019-10-15 01:08:18,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:08:18,177 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2019-10-15 01:08:18,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:18,183 INFO L225 Difference]: With dead ends: 1222 [2019-10-15 01:08:18,183 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:08:18,187 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:18,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:08:18,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 626. [2019-10-15 01:08:18,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-15 01:08:18,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 971 transitions. [2019-10-15 01:08:18,213 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 971 transitions. Word has length 141 [2019-10-15 01:08:18,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:18,213 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 971 transitions. [2019-10-15 01:08:18,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:18,214 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 971 transitions. [2019-10-15 01:08:18,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-15 01:08:18,218 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:18,218 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:18,218 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:18,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:18,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1935329146, now seen corresponding path program 1 times [2019-10-15 01:08:18,219 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:18,219 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122030724] [2019-10-15 01:08:18,219 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,220 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:18,380 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:18,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122030724] [2019-10-15 01:08:18,382 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:18,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:18,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807426975] [2019-10-15 01:08:18,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:18,383 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:18,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:18,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:18,384 INFO L87 Difference]: Start difference. First operand 626 states and 971 transitions. Second operand 6 states. [2019-10-15 01:08:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:18,642 INFO L93 Difference]: Finished difference Result 1185 states and 1847 transitions. [2019-10-15 01:08:18,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:18,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2019-10-15 01:08:18,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:18,648 INFO L225 Difference]: With dead ends: 1185 [2019-10-15 01:08:18,648 INFO L226 Difference]: Without dead ends: 626 [2019-10-15 01:08:18,652 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:18,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-15 01:08:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-15 01:08:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-15 01:08:18,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 967 transitions. [2019-10-15 01:08:18,675 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 967 transitions. Word has length 142 [2019-10-15 01:08:18,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:18,675 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 967 transitions. [2019-10-15 01:08:18,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 967 transitions. [2019-10-15 01:08:18,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 01:08:18,680 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:18,680 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:18,680 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:18,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:18,681 INFO L82 PathProgramCache]: Analyzing trace with hash 210411572, now seen corresponding path program 1 times [2019-10-15 01:08:18,681 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:18,681 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272551194] [2019-10-15 01:08:18,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:18,806 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272551194] [2019-10-15 01:08:18,806 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:18,806 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:18,807 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870606134] [2019-10-15 01:08:18,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:18,807 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:18,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:18,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:18,808 INFO L87 Difference]: Start difference. First operand 626 states and 967 transitions. Second operand 6 states. [2019-10-15 01:08:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:19,017 INFO L93 Difference]: Finished difference Result 1185 states and 1843 transitions. [2019-10-15 01:08:19,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:19,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2019-10-15 01:08:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:19,023 INFO L225 Difference]: With dead ends: 1185 [2019-10-15 01:08:19,023 INFO L226 Difference]: Without dead ends: 626 [2019-10-15 01:08:19,027 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-15 01:08:19,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-15 01:08:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-15 01:08:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 963 transitions. [2019-10-15 01:08:19,049 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 963 transitions. Word has length 143 [2019-10-15 01:08:19,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:19,050 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 963 transitions. [2019-10-15 01:08:19,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:19,050 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 963 transitions. [2019-10-15 01:08:19,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 01:08:19,054 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:19,054 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:19,055 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:19,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:19,055 INFO L82 PathProgramCache]: Analyzing trace with hash 487742644, now seen corresponding path program 1 times [2019-10-15 01:08:19,055 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:19,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372397280] [2019-10-15 01:08:19,056 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,056 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:19,170 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:19,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372397280] [2019-10-15 01:08:19,171 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:19,171 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:08:19,171 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17722635] [2019-10-15 01:08:19,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:08:19,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:19,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:08:19,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:08:19,172 INFO L87 Difference]: Start difference. First operand 626 states and 963 transitions. Second operand 7 states. [2019-10-15 01:08:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:19,269 INFO L93 Difference]: Finished difference Result 1188 states and 1843 transitions. [2019-10-15 01:08:19,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:08:19,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2019-10-15 01:08:19,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:19,274 INFO L225 Difference]: With dead ends: 1188 [2019-10-15 01:08:19,274 INFO L226 Difference]: Without dead ends: 608 [2019-10-15 01:08:19,277 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 [2019-10-15 01:08:19,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-15 01:08:19,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 605. [2019-10-15 01:08:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-15 01:08:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 926 transitions. [2019-10-15 01:08:19,297 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 926 transitions. Word has length 143 [2019-10-15 01:08:19,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:19,297 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 926 transitions. [2019-10-15 01:08:19,298 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:08:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 926 transitions. [2019-10-15 01:08:19,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-15 01:08:19,302 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:19,302 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:19,302 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:19,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1183492043, now seen corresponding path program 1 times [2019-10-15 01:08:19,303 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:19,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93597573] [2019-10-15 01:08:19,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:19,477 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93597573] [2019-10-15 01:08:19,477 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:19,478 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:19,478 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053207278] [2019-10-15 01:08:19,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:19,479 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:19,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:19,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:19,479 INFO L87 Difference]: Start difference. First operand 605 states and 926 transitions. Second operand 6 states. [2019-10-15 01:08:19,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:19,600 INFO L93 Difference]: Finished difference Result 1164 states and 1802 transitions. [2019-10-15 01:08:19,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:19,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2019-10-15 01:08:19,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:19,606 INFO L225 Difference]: With dead ends: 1164 [2019-10-15 01:08:19,606 INFO L226 Difference]: Without dead ends: 605 [2019-10-15 01:08:19,609 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-10-15 01:08:19,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2019-10-15 01:08:19,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-15 01:08:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 925 transitions. [2019-10-15 01:08:19,633 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 925 transitions. Word has length 144 [2019-10-15 01:08:19,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:19,633 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 925 transitions. [2019-10-15 01:08:19,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:19,634 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 925 transitions. [2019-10-15 01:08:19,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 01:08:19,640 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:19,641 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:19,641 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:19,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:19,642 INFO L82 PathProgramCache]: Analyzing trace with hash 163843225, now seen corresponding path program 1 times [2019-10-15 01:08:19,642 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:19,642 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740852815] [2019-10-15 01:08:19,642 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,643 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:19,812 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740852815] [2019-10-15 01:08:19,812 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:19,812 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:19,812 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142907123] [2019-10-15 01:08:19,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:19,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:19,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:19,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:19,814 INFO L87 Difference]: Start difference. First operand 605 states and 925 transitions. Second operand 6 states. [2019-10-15 01:08:19,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:19,942 INFO L93 Difference]: Finished difference Result 1164 states and 1801 transitions. [2019-10-15 01:08:19,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:19,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2019-10-15 01:08:19,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:19,948 INFO L225 Difference]: With dead ends: 1164 [2019-10-15 01:08:19,948 INFO L226 Difference]: Without dead ends: 605 [2019-10-15 01:08:19,951 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:19,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-10-15 01:08:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2019-10-15 01:08:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-15 01:08:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 924 transitions. [2019-10-15 01:08:19,971 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 924 transitions. Word has length 145 [2019-10-15 01:08:19,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:19,971 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 924 transitions. [2019-10-15 01:08:19,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:19,971 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 924 transitions. [2019-10-15 01:08:19,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 01:08:19,976 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:19,976 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:19,976 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:19,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:19,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1794095888, now seen corresponding path program 1 times [2019-10-15 01:08:19,977 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:19,977 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554315327] [2019-10-15 01:08:19,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:20,160 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554315327] [2019-10-15 01:08:20,160 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:20,160 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:08:20,160 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2364292] [2019-10-15 01:08:20,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:08:20,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:20,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:08:20,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:08:20,162 INFO L87 Difference]: Start difference. First operand 605 states and 924 transitions. Second operand 12 states. [2019-10-15 01:08:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:20,427 INFO L93 Difference]: Finished difference Result 1170 states and 1811 transitions. [2019-10-15 01:08:20,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 01:08:20,428 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 146 [2019-10-15 01:08:20,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:20,436 INFO L225 Difference]: With dead ends: 1170 [2019-10-15 01:08:20,436 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:08:20,440 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:20,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:08:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 610. [2019-10-15 01:08:20,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2019-10-15 01:08:20,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 930 transitions. [2019-10-15 01:08:20,461 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 930 transitions. Word has length 146 [2019-10-15 01:08:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:20,461 INFO L462 AbstractCegarLoop]: Abstraction has 610 states and 930 transitions. [2019-10-15 01:08:20,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:08:20,461 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 930 transitions. [2019-10-15 01:08:20,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-15 01:08:20,466 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:20,467 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:20,467 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:20,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:20,467 INFO L82 PathProgramCache]: Analyzing trace with hash 114192712, now seen corresponding path program 1 times [2019-10-15 01:08:20,468 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:20,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225616785] [2019-10-15 01:08:20,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:08:20,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225616785] [2019-10-15 01:08:20,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401893310] [2019-10-15 01:08:20,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:21,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 2631 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:21,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:21,283 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:08:21,284 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:08:21,628 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:21,629 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 6] total 17 [2019-10-15 01:08:21,629 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044874975] [2019-10-15 01:08:21,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:21,632 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:21,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:21,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:08:21,632 INFO L87 Difference]: Start difference. First operand 610 states and 930 transitions. Second operand 5 states. [2019-10-15 01:08:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:22,510 INFO L93 Difference]: Finished difference Result 1175 states and 1847 transitions. [2019-10-15 01:08:22,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:22,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-10-15 01:08:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:22,516 INFO L225 Difference]: With dead ends: 1175 [2019-10-15 01:08:22,516 INFO L226 Difference]: Without dead ends: 618 [2019-10-15 01:08:22,521 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 294 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:08:22,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2019-10-15 01:08:22,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2019-10-15 01:08:22,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-10-15 01:08:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 943 transitions. [2019-10-15 01:08:22,549 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 943 transitions. Word has length 147 [2019-10-15 01:08:22,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:22,550 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 943 transitions. [2019-10-15 01:08:22,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 943 transitions. [2019-10-15 01:08:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-15 01:08:22,554 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:22,554 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:22,762 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:22,763 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:22,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1841294517, now seen corresponding path program 1 times [2019-10-15 01:08:22,763 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:22,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851594074] [2019-10-15 01:08:22,764 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:22,764 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:22,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 01:08:23,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851594074] [2019-10-15 01:08:23,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468366151] [2019-10-15 01:08:23,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:23,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:23,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 01:08:23,697 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 01:08:24,095 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:24,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-10-15 01:08:24,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642686908] [2019-10-15 01:08:24,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:24,097 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:24,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:24,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:08:24,097 INFO L87 Difference]: Start difference. First operand 618 states and 943 transitions. Second operand 5 states. [2019-10-15 01:08:24,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:24,906 INFO L93 Difference]: Finished difference Result 1191 states and 1870 transitions. [2019-10-15 01:08:24,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:24,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-15 01:08:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:24,911 INFO L225 Difference]: With dead ends: 1191 [2019-10-15 01:08:24,911 INFO L226 Difference]: Without dead ends: 626 [2019-10-15 01:08:24,915 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 290 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-15 01:08:24,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-15 01:08:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-15 01:08:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 956 transitions. [2019-10-15 01:08:24,936 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 956 transitions. Word has length 150 [2019-10-15 01:08:24,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:24,937 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 956 transitions. [2019-10-15 01:08:24,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:24,937 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 956 transitions. [2019-10-15 01:08:24,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-15 01:08:24,941 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:24,941 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:25,147 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:25,148 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:25,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:25,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1337110188, now seen corresponding path program 1 times [2019-10-15 01:08:25,148 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:25,149 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914300652] [2019-10-15 01:08:25,149 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:25,149 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:25,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:08:25,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914300652] [2019-10-15 01:08:25,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299580289] [2019-10-15 01:08:25,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:25,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:25,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:08:25,932 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:26,208 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:08:26,209 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:26,209 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 6] total 17 [2019-10-15 01:08:26,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249511557] [2019-10-15 01:08:26,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:26,210 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:26,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:26,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:08:26,211 INFO L87 Difference]: Start difference. First operand 626 states and 956 transitions. Second operand 5 states. [2019-10-15 01:08:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:27,074 INFO L93 Difference]: Finished difference Result 1207 states and 1893 transitions. [2019-10-15 01:08:27,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:27,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2019-10-15 01:08:27,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:27,081 INFO L225 Difference]: With dead ends: 1207 [2019-10-15 01:08:27,081 INFO L226 Difference]: Without dead ends: 634 [2019-10-15 01:08:27,085 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 306 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:08:27,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-15 01:08:27,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2019-10-15 01:08:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2019-10-15 01:08:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 969 transitions. [2019-10-15 01:08:27,112 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 969 transitions. Word has length 153 [2019-10-15 01:08:27,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:27,112 INFO L462 AbstractCegarLoop]: Abstraction has 634 states and 969 transitions. [2019-10-15 01:08:27,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:27,113 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 969 transitions. [2019-10-15 01:08:27,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-15 01:08:27,118 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:27,119 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:27,327 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:27,327 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:27,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:27,327 INFO L82 PathProgramCache]: Analyzing trace with hash -938944175, now seen corresponding path program 1 times [2019-10-15 01:08:27,328 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:27,328 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664342089] [2019-10-15 01:08:27,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:27,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:27,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:27,493 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:27,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664342089] [2019-10-15 01:08:27,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985836906] [2019-10-15 01:08:27,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:27,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 2640 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:27,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:08:28,068 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:08:28,396 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:28,397 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 6] total 16 [2019-10-15 01:08:28,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253639538] [2019-10-15 01:08:28,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:28,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:28,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:28,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:08:28,398 INFO L87 Difference]: Start difference. First operand 634 states and 969 transitions. Second operand 5 states. [2019-10-15 01:08:29,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:29,247 INFO L93 Difference]: Finished difference Result 1223 states and 1916 transitions. [2019-10-15 01:08:29,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:29,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2019-10-15 01:08:29,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:29,252 INFO L225 Difference]: With dead ends: 1223 [2019-10-15 01:08:29,253 INFO L226 Difference]: Without dead ends: 642 [2019-10-15 01:08:29,256 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 312 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:08:29,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-15 01:08:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-15 01:08:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-15 01:08:29,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 982 transitions. [2019-10-15 01:08:29,277 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 982 transitions. Word has length 156 [2019-10-15 01:08:29,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:29,278 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 982 transitions. [2019-10-15 01:08:29,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:29,278 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 982 transitions. [2019-10-15 01:08:29,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 01:08:29,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:29,283 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:29,489 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:29,490 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:29,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:29,491 INFO L82 PathProgramCache]: Analyzing trace with hash 427669008, now seen corresponding path program 1 times [2019-10-15 01:08:29,491 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:29,492 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631333049] [2019-10-15 01:08:29,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:29,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:29,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:29,643 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631333049] [2019-10-15 01:08:29,643 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657166925] [2019-10-15 01:08:29,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:30,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 2643 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-15 01:08:30,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 01:08:30,173 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:08:30,339 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:30,339 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10] total 14 [2019-10-15 01:08:30,340 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575693022] [2019-10-15 01:08:30,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:30,340 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:30,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:30,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:30,341 INFO L87 Difference]: Start difference. First operand 642 states and 982 transitions. Second operand 6 states. [2019-10-15 01:08:31,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:31,025 INFO L93 Difference]: Finished difference Result 1826 states and 2878 transitions. [2019-10-15 01:08:31,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:08:31,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2019-10-15 01:08:31,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:31,037 INFO L225 Difference]: With dead ends: 1826 [2019-10-15 01:08:31,037 INFO L226 Difference]: Without dead ends: 1237 [2019-10-15 01:08:31,044 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:08:31,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2019-10-15 01:08:31,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1228. [2019-10-15 01:08:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2019-10-15 01:08:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1917 transitions. [2019-10-15 01:08:31,101 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1917 transitions. Word has length 159 [2019-10-15 01:08:31,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:31,102 INFO L462 AbstractCegarLoop]: Abstraction has 1228 states and 1917 transitions. [2019-10-15 01:08:31,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1917 transitions. [2019-10-15 01:08:31,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:08:31,106 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:31,107 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:31,321 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:31,321 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:31,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:31,322 INFO L82 PathProgramCache]: Analyzing trace with hash -319977560, now seen corresponding path program 1 times [2019-10-15 01:08:31,322 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:31,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014612045] [2019-10-15 01:08:31,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:31,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:31,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:31,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014612045] [2019-10-15 01:08:31,488 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49194758] [2019-10-15 01:08:31,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:31,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:08:31,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 01:08:32,004 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:08:32,116 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:32,116 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2019-10-15 01:08:32,116 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858115453] [2019-10-15 01:08:32,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:08:32,117 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:32,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:08:32,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:32,118 INFO L87 Difference]: Start difference. First operand 1228 states and 1917 transitions. Second operand 3 states. [2019-10-15 01:08:32,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:32,294 INFO L93 Difference]: Finished difference Result 2983 states and 4733 transitions. [2019-10-15 01:08:32,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:08:32,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2019-10-15 01:08:32,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:32,308 INFO L225 Difference]: With dead ends: 2983 [2019-10-15 01:08:32,308 INFO L226 Difference]: Without dead ends: 1809 [2019-10-15 01:08:32,315 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 337 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2019-10-15 01:08:32,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1228. [2019-10-15 01:08:32,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2019-10-15 01:08:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1916 transitions. [2019-10-15 01:08:32,398 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1916 transitions. Word has length 164 [2019-10-15 01:08:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:32,400 INFO L462 AbstractCegarLoop]: Abstraction has 1228 states and 1916 transitions. [2019-10-15 01:08:32,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:08:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1916 transitions. [2019-10-15 01:08:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:08:32,407 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:32,408 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:32,616 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:32,616 INFO L410 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:32,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:32,617 INFO L82 PathProgramCache]: Analyzing trace with hash 103669162, now seen corresponding path program 1 times [2019-10-15 01:08:32,617 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:32,618 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587831151] [2019-10-15 01:08:32,618 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:32,618 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:32,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:32,913 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587831151] [2019-10-15 01:08:32,914 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818807417] [2019-10-15 01:08:32,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:33,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-15 01:08:33,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 01:08:33,500 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:33,860 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:33,860 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 21 [2019-10-15 01:08:33,861 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568636210] [2019-10-15 01:08:33,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:08:33,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:33,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:08:33,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:08:33,862 INFO L87 Difference]: Start difference. First operand 1228 states and 1916 transitions. Second operand 9 states. [2019-10-15 01:08:39,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:39,264 INFO L93 Difference]: Finished difference Result 3747 states and 5961 transitions. [2019-10-15 01:08:39,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:08:39,264 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2019-10-15 01:08:39,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:39,282 INFO L225 Difference]: With dead ends: 3747 [2019-10-15 01:08:39,283 INFO L226 Difference]: Without dead ends: 2572 [2019-10-15 01:08:39,289 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:08:39,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2019-10-15 01:08:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2541. [2019-10-15 01:08:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2541 states. [2019-10-15 01:08:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 4027 transitions. [2019-10-15 01:08:39,432 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 4027 transitions. Word has length 164 [2019-10-15 01:08:39,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:39,433 INFO L462 AbstractCegarLoop]: Abstraction has 2541 states and 4027 transitions. [2019-10-15 01:08:39,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:08:39,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 4027 transitions. [2019-10-15 01:08:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 01:08:39,444 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:39,444 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:39,661 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:39,662 INFO L410 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:39,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:39,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1710177388, now seen corresponding path program 1 times [2019-10-15 01:08:39,664 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:39,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290558973] [2019-10-15 01:08:39,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:39,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:39,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:08:39,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290558973] [2019-10-15 01:08:39,971 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:39,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 01:08:39,972 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99189040] [2019-10-15 01:08:39,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:08:39,973 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:39,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:08:39,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:08:39,973 INFO L87 Difference]: Start difference. First operand 2541 states and 4027 transitions. Second operand 9 states. [2019-10-15 01:08:40,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:40,292 INFO L93 Difference]: Finished difference Result 4954 states and 7890 transitions. [2019-10-15 01:08:40,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:08:40,293 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2019-10-15 01:08:40,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:40,314 INFO L225 Difference]: With dead ends: 4954 [2019-10-15 01:08:40,314 INFO L226 Difference]: Without dead ends: 2460 [2019-10-15 01:08:40,332 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:40,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2019-10-15 01:08:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2456. [2019-10-15 01:08:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2456 states. [2019-10-15 01:08:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3900 transitions. [2019-10-15 01:08:40,468 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3900 transitions. Word has length 167 [2019-10-15 01:08:40,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:40,469 INFO L462 AbstractCegarLoop]: Abstraction has 2456 states and 3900 transitions. [2019-10-15 01:08:40,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:08:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3900 transitions. [2019-10-15 01:08:40,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:08:40,476 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:40,476 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:40,477 INFO L410 AbstractCegarLoop]: === Iteration 23 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:40,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:40,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1587355385, now seen corresponding path program 1 times [2019-10-15 01:08:40,477 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:40,478 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367638767] [2019-10-15 01:08:40,478 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:40,478 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:40,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:40,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367638767] [2019-10-15 01:08:40,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425176003] [2019-10-15 01:08:40,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:41,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-15 01:08:41,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:41,350 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 01:08:41,350 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:41,700 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:41,700 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 21 [2019-10-15 01:08:41,700 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333143026] [2019-10-15 01:08:41,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:08:41,701 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:41,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:08:41,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:08:41,701 INFO L87 Difference]: Start difference. First operand 2456 states and 3900 transitions. Second operand 9 states.