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_spec13_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:09:02,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:09:02,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:09:03,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:09:03,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:09:03,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:09:03,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:09:03,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:09:03,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:09:03,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:09:03,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:09:03,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:09:03,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:09:03,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:09:03,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:09:03,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:09:03,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:09:03,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:09:03,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:09:03,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:09:03,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:09:03,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:09:03,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:09:03,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:09:03,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:09:03,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:09:03,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:09:03,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:09:03,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:09:03,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:09:03,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:09:03,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:09:03,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:09:03,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:09:03,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:09:03,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:09:03,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:09:03,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:09:03,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:09:03,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:09:03,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:09:03,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:09:03,096 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:09:03,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:09:03,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:09:03,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:09:03,101 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:09:03,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:09:03,102 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:09:03,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:09:03,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:09:03,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:09:03,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:09:03,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:09:03,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:09:03,106 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:09:03,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:09:03,106 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:09:03,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:09:03,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:09:03,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:09:03,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:09:03,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:09:03,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:09:03,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:09:03,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:09:03,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:09:03,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:09:03,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:09:03,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:09:03,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:09:03,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:09:03,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:09:03,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:09:03,428 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:09:03,428 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:09:03,429 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c [2019-10-13 21:09:03,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267b22146/519ceab856034bb785bcb17aadb2fe16/FLAG6faaa6df6 [2019-10-13 21:09:04,167 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:09:04,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c [2019-10-13 21:09:04,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267b22146/519ceab856034bb785bcb17aadb2fe16/FLAG6faaa6df6 [2019-10-13 21:09:04,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/267b22146/519ceab856034bb785bcb17aadb2fe16 [2019-10-13 21:09:04,339 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:09:04,341 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:09:04,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:09:04,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:09:04,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:09:04,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:09:04" (1/1) ... [2019-10-13 21:09:04,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fddd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:04, skipping insertion in model container [2019-10-13 21:09:04,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:09:04" (1/1) ... [2019-10-13 21:09:04,358 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:09:04,431 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:09:05,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:09:05,187 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:09:05,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:09:05,433 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:09:05,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:05 WrapperNode [2019-10-13 21:09:05,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:09:05,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:09:05,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:09:05,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:09:05,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:05" (1/1) ... [2019-10-13 21:09:05,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:05" (1/1) ... [2019-10-13 21:09:05,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:05" (1/1) ... [2019-10-13 21:09:05,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:05" (1/1) ... [2019-10-13 21:09:05,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:05" (1/1) ... [2019-10-13 21:09:05,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:05" (1/1) ... [2019-10-13 21:09:05,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:05" (1/1) ... [2019-10-13 21:09:05,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:09:05,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:09:05,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:09:05,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:09:05,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:09:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:09:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:09:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:09:05,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:09:05,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:09:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:09:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:09:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:09:05,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:09:05,767 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:09:05,767 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:09:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:09:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:09:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:09:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:09:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:09:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:09:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:09:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:09:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:09:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:09:05,774 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:09:05,774 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:09:05,774 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:09:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:09:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:09:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-13 21:09:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-13 21:09:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:09:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:09:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:09:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:09:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:09:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:09:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:09:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:09:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:09:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:09:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:09:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:09:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:09:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:09:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:09:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:09:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:09:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:09:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:09:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-13 21:09:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-13 21:09:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:09:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-13 21:09:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-13 21:09:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:09:05,780 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-13 21:09:05,780 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-13 21:09:05,780 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-13 21:09:05,780 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-13 21:09:05,781 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:09:05,781 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:09:05,781 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:09:05,781 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:09:05,781 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:09:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:09:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:09:05,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:09:05,783 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:09:05,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:09:05,783 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 21:09:05,783 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 21:09:05,784 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 21:09:05,784 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 21:09:05,784 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:09:05,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:09:05,785 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:09:05,785 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 21:09:05,786 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 21:09:05,786 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 21:09:05,786 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 21:09:05,786 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:09:05,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:09:05,787 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:09:05,787 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-13 21:09:05,787 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-13 21:09:05,788 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:09:05,788 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-13 21:09:05,788 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-13 21:09:05,789 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:09:05,789 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:09:05,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 21:09:05,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 21:09:05,790 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:09:05,790 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:09:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:09:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:09:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:09:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:09:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:09:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:09:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:09:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:09:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:09:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:09:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:09:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:09:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:09:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:09:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:09:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:09:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:09:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:09:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:09:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:09:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:09:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:09:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:09:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:09:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:09:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:09:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:09:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:09:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:09:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:09:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:09:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:09:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:09:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:09:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:09:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:09:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:09:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:09:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:09:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:09:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:09:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:09:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:09:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:09:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:09:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:09:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:09:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:09:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:09:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:09:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-13 21:09:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:09:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-13 21:09:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:09:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:09:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:09:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:09:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:09:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:09:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:09:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:09:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:09:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:09:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:09:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:09:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:09:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:09:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:09:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:09:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:09:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:09:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 21:09:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 21:09:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-13 21:09:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-13 21:09:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-13 21:09:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-13 21:09:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-13 21:09:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-13 21:09:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-13 21:09:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-13 21:09:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:09:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:09:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:09:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:09:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 21:09:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 21:09:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 21:09:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 21:09:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:09:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:09:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 21:09:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 21:09:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 21:09:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 21:09:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:09:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:09:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:09:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-13 21:09:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-13 21:09:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-13 21:09:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-13 21:09:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:09:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:09:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:09:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:09:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:09:08,335 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:09:08,336 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:09:08,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:09:08 BoogieIcfgContainer [2019-10-13 21:09:08,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:09:08,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:09:08,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:09:08,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:09:08,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:09:04" (1/3) ... [2019-10-13 21:09:08,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f87dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:09:08, skipping insertion in model container [2019-10-13 21:09:08,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:05" (2/3) ... [2019-10-13 21:09:08,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f87dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:09:08, skipping insertion in model container [2019-10-13 21:09:08,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:09:08" (3/3) ... [2019-10-13 21:09:08,346 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_productSimulator.cil.c [2019-10-13 21:09:08,356 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:09:08,366 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:09:08,379 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:09:08,430 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:09:08,430 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:09:08,430 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:09:08,430 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:09:08,430 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:09:08,430 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:09:08,431 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:09:08,431 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:09:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states. [2019-10-13 21:09:08,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 21:09:08,513 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:08,515 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:08,519 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:08,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:08,525 INFO L82 PathProgramCache]: Analyzing trace with hash 306173938, now seen corresponding path program 1 times [2019-10-13 21:09:08,536 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:08,536 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816315109] [2019-10-13 21:09:08,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:08,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:08,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-13 21:09:09,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816315109] [2019-10-13 21:09:09,289 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:09:09,290 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:09:09,290 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828097928] [2019-10-13 21:09:09,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:09:09,297 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:09,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:09:09,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:09:09,315 INFO L87 Difference]: Start difference. First operand 943 states. Second operand 6 states. [2019-10-13 21:09:09,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:09,539 INFO L93 Difference]: Finished difference Result 1564 states and 2451 transitions. [2019-10-13 21:09:09,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:09:09,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2019-10-13 21:09:09,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:09,581 INFO L225 Difference]: With dead ends: 1564 [2019-10-13 21:09:09,582 INFO L226 Difference]: Without dead ends: 785 [2019-10-13 21:09:09,597 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:09:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2019-10-13 21:09:09,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 785. [2019-10-13 21:09:09,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2019-10-13 21:09:09,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1209 transitions. [2019-10-13 21:09:09,784 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1209 transitions. Word has length 146 [2019-10-13 21:09:09,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:09,788 INFO L462 AbstractCegarLoop]: Abstraction has 785 states and 1209 transitions. [2019-10-13 21:09:09,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:09:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1209 transitions. [2019-10-13 21:09:09,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 21:09:09,795 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:09,795 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:09,795 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:09,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:09,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1029500576, now seen corresponding path program 1 times [2019-10-13 21:09:09,796 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:09,796 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898061764] [2019-10-13 21:09:09,797 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:09,797 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:09,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-13 21:09:10,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898061764] [2019-10-13 21:09:10,038 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:09:10,038 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:09:10,039 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368500143] [2019-10-13 21:09:10,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:09:10,056 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:10,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:09:10,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:09:10,057 INFO L87 Difference]: Start difference. First operand 785 states and 1209 transitions. Second operand 4 states. [2019-10-13 21:09:10,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:10,889 INFO L93 Difference]: Finished difference Result 1537 states and 2396 transitions. [2019-10-13 21:09:10,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:09:10,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-10-13 21:09:10,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:10,898 INFO L225 Difference]: With dead ends: 1537 [2019-10-13 21:09:10,898 INFO L226 Difference]: Without dead ends: 784 [2019-10-13 21:09:10,903 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:09:10,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2019-10-13 21:09:10,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2019-10-13 21:09:10,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2019-10-13 21:09:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1202 transitions. [2019-10-13 21:09:10,946 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1202 transitions. Word has length 147 [2019-10-13 21:09:10,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:10,946 INFO L462 AbstractCegarLoop]: Abstraction has 784 states and 1202 transitions. [2019-10-13 21:09:10,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:09:10,947 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1202 transitions. [2019-10-13 21:09:10,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 21:09:10,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:10,950 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:10,950 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:10,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:10,951 INFO L82 PathProgramCache]: Analyzing trace with hash -624438039, now seen corresponding path program 1 times [2019-10-13 21:09:10,951 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:10,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877851136] [2019-10-13 21:09:10,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:10,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:10,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:09:11,220 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877851136] [2019-10-13 21:09:11,220 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530120944] [2019-10-13 21:09:11,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:11,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 3288 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:09:11,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:09:11,969 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-13 21:09:12,131 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:09:12,132 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-10-13 21:09:12,132 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916343870] [2019-10-13 21:09:12,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:09:12,133 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:12,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:09:12,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:09:12,134 INFO L87 Difference]: Start difference. First operand 784 states and 1202 transitions. Second operand 3 states. [2019-10-13 21:09:12,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:12,240 INFO L93 Difference]: Finished difference Result 2231 states and 3479 transitions. [2019-10-13 21:09:12,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:09:12,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2019-10-13 21:09:12,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:12,254 INFO L225 Difference]: With dead ends: 2231 [2019-10-13 21:09:12,254 INFO L226 Difference]: Without dead ends: 1509 [2019-10-13 21:09:12,259 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:09:12,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2019-10-13 21:09:12,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1505. [2019-10-13 21:09:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2019-10-13 21:09:12,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2336 transitions. [2019-10-13 21:09:12,337 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2336 transitions. Word has length 148 [2019-10-13 21:09:12,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:12,339 INFO L462 AbstractCegarLoop]: Abstraction has 1505 states and 2336 transitions. [2019-10-13 21:09:12,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:09:12,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2336 transitions. [2019-10-13 21:09:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 21:09:12,347 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:12,347 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:12,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:12,558 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:12,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:12,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1454256765, now seen corresponding path program 1 times [2019-10-13 21:09:12,560 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:12,560 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680996230] [2019-10-13 21:09:12,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:12,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:12,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:12,788 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:09:12,788 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680996230] [2019-10-13 21:09:12,788 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383016870] [2019-10-13 21:09:12,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:13,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 3288 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:09:13,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:13,512 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-13 21:09:13,512 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:09:13,733 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:09:13,734 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 9 [2019-10-13 21:09:13,734 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945848513] [2019-10-13 21:09:13,735 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:09:13,735 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:13,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:09:13,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:09:13,736 INFO L87 Difference]: Start difference. First operand 1505 states and 2336 transitions. Second operand 4 states. [2019-10-13 21:09:13,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:13,868 INFO L93 Difference]: Finished difference Result 2963 states and 4635 transitions. [2019-10-13 21:09:13,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:09:13,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-13 21:09:13,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:13,881 INFO L225 Difference]: With dead ends: 2963 [2019-10-13 21:09:13,882 INFO L226 Difference]: Without dead ends: 1523 [2019-10-13 21:09:13,889 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 296 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:09:13,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2019-10-13 21:09:14,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2019-10-13 21:09:14,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1523 states. [2019-10-13 21:09:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2364 transitions. [2019-10-13 21:09:14,022 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2364 transitions. Word has length 149 [2019-10-13 21:09:14,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:14,022 INFO L462 AbstractCegarLoop]: Abstraction has 1523 states and 2364 transitions. [2019-10-13 21:09:14,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:09:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2364 transitions. [2019-10-13 21:09:14,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 21:09:14,026 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:14,027 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:14,235 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:14,236 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:14,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:14,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1897892157, now seen corresponding path program 1 times [2019-10-13 21:09:14,237 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:14,237 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505867846] [2019-10-13 21:09:14,237 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:14,238 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:14,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-13 21:09:14,424 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505867846] [2019-10-13 21:09:14,424 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575666497] [2019-10-13 21:09:14,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:15,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 3290 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:09:15,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:09:15,278 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-13 21:09:15,458 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:09:15,458 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-13 21:09:15,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459295878] [2019-10-13 21:09:15,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:09:15,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:15,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:09:15,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:09:15,460 INFO L87 Difference]: Start difference. First operand 1523 states and 2364 transitions. Second operand 4 states. [2019-10-13 21:09:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:15,825 INFO L93 Difference]: Finished difference Result 3055 states and 4805 transitions. [2019-10-13 21:09:15,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:09:15,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-10-13 21:09:15,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:15,838 INFO L225 Difference]: With dead ends: 3055 [2019-10-13 21:09:15,838 INFO L226 Difference]: Without dead ends: 1601 [2019-10-13 21:09:15,847 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 298 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:09:15,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2019-10-13 21:09:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1601. [2019-10-13 21:09:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1601 states. [2019-10-13 21:09:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2512 transitions. [2019-10-13 21:09:15,935 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2512 transitions. Word has length 151 [2019-10-13 21:09:15,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:15,937 INFO L462 AbstractCegarLoop]: Abstraction has 1601 states and 2512 transitions. [2019-10-13 21:09:15,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:09:15,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2512 transitions. [2019-10-13 21:09:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 21:09:15,941 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:15,941 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:16,149 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:16,150 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:16,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:16,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1083880609, now seen corresponding path program 1 times [2019-10-13 21:09:16,151 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:16,151 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008098861] [2019-10-13 21:09:16,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:16,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:16,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:16,291 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-13 21:09:16,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008098861] [2019-10-13 21:09:16,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186131350] [2019-10-13 21:09:16,292 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 [2019-10-13 21:09:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:16,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 3292 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:09:16,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:09:17,090 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-13 21:09:17,374 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:09:17,375 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:09:17,375 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622066953] [2019-10-13 21:09:17,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:09:17,376 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:17,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:09:17,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:09:17,377 INFO L87 Difference]: Start difference. First operand 1601 states and 2512 transitions. Second operand 7 states. [2019-10-13 21:09:17,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:17,558 INFO L93 Difference]: Finished difference Result 3161 states and 4987 transitions. [2019-10-13 21:09:17,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:09:17,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2019-10-13 21:09:17,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:17,572 INFO L225 Difference]: With dead ends: 3161 [2019-10-13 21:09:17,572 INFO L226 Difference]: Without dead ends: 1629 [2019-10-13 21:09:17,580 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 296 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:09:17,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2019-10-13 21:09:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1615. [2019-10-13 21:09:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1615 states. [2019-10-13 21:09:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2534 transitions. [2019-10-13 21:09:17,654 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2534 transitions. Word has length 153 [2019-10-13 21:09:17,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:17,655 INFO L462 AbstractCegarLoop]: Abstraction has 1615 states and 2534 transitions. [2019-10-13 21:09:17,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:09:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2534 transitions. [2019-10-13 21:09:17,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 21:09:17,659 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:17,659 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:17,867 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:17,867 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:17,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:17,868 INFO L82 PathProgramCache]: Analyzing trace with hash -905152903, now seen corresponding path program 1 times [2019-10-13 21:09:17,868 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:17,868 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316270223] [2019-10-13 21:09:17,868 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:17,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:17,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 21:09:17,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316270223] [2019-10-13 21:09:17,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200146428] [2019-10-13 21:09:17,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-10-13 21:09:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:18,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:09:18,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:09:18,749 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 21:09:18,893 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:09:18,893 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 21:09:18,893 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57745651] [2019-10-13 21:09:18,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:09:18,894 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:18,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:09:18,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:09:18,895 INFO L87 Difference]: Start difference. First operand 1615 states and 2534 transitions. Second operand 4 states. [2019-10-13 21:09:19,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:19,006 INFO L93 Difference]: Finished difference Result 3187 states and 5027 transitions. [2019-10-13 21:09:19,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:09:19,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2019-10-13 21:09:19,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:19,021 INFO L225 Difference]: With dead ends: 3187 [2019-10-13 21:09:19,021 INFO L226 Difference]: Without dead ends: 1637 [2019-10-13 21:09:19,029 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 304 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:09:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2019-10-13 21:09:19,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1633. [2019-10-13 21:09:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1633 states. [2019-10-13 21:09:19,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2550 transitions. [2019-10-13 21:09:19,096 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2550 transitions. Word has length 154 [2019-10-13 21:09:19,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:19,098 INFO L462 AbstractCegarLoop]: Abstraction has 1633 states and 2550 transitions. [2019-10-13 21:09:19,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:09:19,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2550 transitions. [2019-10-13 21:09:19,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 21:09:19,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:19,102 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:19,310 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:19,311 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:19,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:19,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1195984086, now seen corresponding path program 1 times [2019-10-13 21:09:19,312 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:19,312 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973366364] [2019-10-13 21:09:19,312 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:19,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:19,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 21:09:19,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973366364] [2019-10-13 21:09:19,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978736685] [2019-10-13 21:09:19,445 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 [2019-10-13 21:09:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:20,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 3295 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:09:20,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:20,173 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 21:09:20,173 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 21:09:20,737 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:09:20,737 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2019-10-13 21:09:20,738 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689434719] [2019-10-13 21:09:20,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:09:20,740 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:20,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:09:20,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:09:20,745 INFO L87 Difference]: Start difference. First operand 1633 states and 2550 transitions. Second operand 5 states. [2019-10-13 21:09:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:20,842 INFO L93 Difference]: Finished difference Result 3147 states and 4949 transitions. [2019-10-13 21:09:20,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:09:20,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2019-10-13 21:09:20,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:20,855 INFO L225 Difference]: With dead ends: 3147 [2019-10-13 21:09:20,855 INFO L226 Difference]: Without dead ends: 1633 [2019-10-13 21:09:20,863 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 311 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:09:20,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2019-10-13 21:09:20,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1633. [2019-10-13 21:09:20,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1633 states. [2019-10-13 21:09:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2540 transitions. [2019-10-13 21:09:20,941 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2540 transitions. Word has length 157 [2019-10-13 21:09:20,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:20,941 INFO L462 AbstractCegarLoop]: Abstraction has 1633 states and 2540 transitions. [2019-10-13 21:09:20,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:09:20,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2540 transitions. [2019-10-13 21:09:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:09:20,948 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:20,948 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:21,157 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:21,158 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:21,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:21,158 INFO L82 PathProgramCache]: Analyzing trace with hash 75002240, now seen corresponding path program 1 times [2019-10-13 21:09:21,158 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:21,159 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460738250] [2019-10-13 21:09:21,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:21,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:21,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 21:09:21,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460738250] [2019-10-13 21:09:21,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075441944] [2019-10-13 21:09:21,344 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 [2019-10-13 21:09:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:22,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:09:22,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:09:22,155 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:09:22,299 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:09:22,299 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2019-10-13 21:09:22,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581669941] [2019-10-13 21:09:22,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:09:22,303 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:22,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:09:22,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:09:22,304 INFO L87 Difference]: Start difference. First operand 1633 states and 2540 transitions. Second operand 5 states. [2019-10-13 21:09:22,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:22,541 INFO L93 Difference]: Finished difference Result 3139 states and 4931 transitions. [2019-10-13 21:09:22,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:09:22,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-10-13 21:09:22,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:22,553 INFO L225 Difference]: With dead ends: 3139 [2019-10-13 21:09:22,554 INFO L226 Difference]: Without dead ends: 1717 [2019-10-13 21:09:22,561 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 313 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:09:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2019-10-13 21:09:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1711. [2019-10-13 21:09:22,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1711 states. [2019-10-13 21:09:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2686 transitions. [2019-10-13 21:09:22,633 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2686 transitions. Word has length 158 [2019-10-13 21:09:22,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:22,633 INFO L462 AbstractCegarLoop]: Abstraction has 1711 states and 2686 transitions. [2019-10-13 21:09:22,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:09:22,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2686 transitions. [2019-10-13 21:09:22,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:09:22,638 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:22,638 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:22,856 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:22,856 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:22,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:22,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1849665348, now seen corresponding path program 1 times [2019-10-13 21:09:22,857 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:22,857 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276882616] [2019-10-13 21:09:22,857 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:22,858 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:22,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 21:09:23,086 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276882616] [2019-10-13 21:09:23,086 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298108751] [2019-10-13 21:09:23,086 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 [2019-10-13 21:09:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:23,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 3297 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:09:23,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-13 21:09:23,775 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-13 21:09:24,075 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:09:24,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [4] total 13 [2019-10-13 21:09:24,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088918336] [2019-10-13 21:09:24,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:09:24,078 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:24,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:09:24,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:09:24,079 INFO L87 Difference]: Start difference. First operand 1711 states and 2686 transitions. Second operand 11 states. [2019-10-13 21:09:24,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:24,337 INFO L93 Difference]: Finished difference Result 3173 states and 4971 transitions. [2019-10-13 21:09:24,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:09:24,338 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 159 [2019-10-13 21:09:24,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:24,358 INFO L225 Difference]: With dead ends: 3173 [2019-10-13 21:09:24,359 INFO L226 Difference]: Without dead ends: 1751 [2019-10-13 21:09:24,372 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 309 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-13 21:09:24,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2019-10-13 21:09:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1725. [2019-10-13 21:09:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2019-10-13 21:09:24,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2704 transitions. [2019-10-13 21:09:24,469 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2704 transitions. Word has length 159 [2019-10-13 21:09:24,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:24,470 INFO L462 AbstractCegarLoop]: Abstraction has 1725 states and 2704 transitions. [2019-10-13 21:09:24,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:09:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2704 transitions. [2019-10-13 21:09:24,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 21:09:24,479 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:24,480 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:24,692 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:24,692 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:24,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:24,693 INFO L82 PathProgramCache]: Analyzing trace with hash -101195520, now seen corresponding path program 1 times [2019-10-13 21:09:24,693 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:24,693 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13231044] [2019-10-13 21:09:24,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:24,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:24,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 21:09:24,810 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13231044] [2019-10-13 21:09:24,810 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753702332] [2019-10-13 21:09:24,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:25,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 3299 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:09:25,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 21:09:25,559 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 21:09:25,693 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:09:25,693 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 8 [2019-10-13 21:09:25,694 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410086956] [2019-10-13 21:09:25,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:09:25,695 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:25,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:09:25,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:09:25,696 INFO L87 Difference]: Start difference. First operand 1725 states and 2704 transitions. Second operand 6 states. [2019-10-13 21:09:25,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:25,806 INFO L93 Difference]: Finished difference Result 3263 states and 5129 transitions. [2019-10-13 21:09:25,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:09:25,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2019-10-13 21:09:25,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:25,819 INFO L225 Difference]: With dead ends: 3263 [2019-10-13 21:09:25,819 INFO L226 Difference]: Without dead ends: 1725 [2019-10-13 21:09:25,826 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:09:25,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2019-10-13 21:09:25,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1725. [2019-10-13 21:09:25,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2019-10-13 21:09:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2698 transitions. [2019-10-13 21:09:25,896 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2698 transitions. Word has length 161 [2019-10-13 21:09:25,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:25,899 INFO L462 AbstractCegarLoop]: Abstraction has 1725 states and 2698 transitions. [2019-10-13 21:09:25,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:09:25,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2698 transitions. [2019-10-13 21:09:25,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:09:25,903 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:25,904 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:26,112 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:26,112 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:26,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:26,113 INFO L82 PathProgramCache]: Analyzing trace with hash 467627035, now seen corresponding path program 1 times [2019-10-13 21:09:26,113 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:26,113 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501013439] [2019-10-13 21:09:26,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:26,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:26,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 21:09:26,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501013439] [2019-10-13 21:09:26,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106898019] [2019-10-13 21:09:26,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:26,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 3299 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 21:09:26,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-13 21:09:26,943 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:27,012 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:09:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:09:27,124 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:09:27,124 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [4] total 11 [2019-10-13 21:09:27,124 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210383350] [2019-10-13 21:09:27,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:09:27,125 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:27,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:09:27,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:09:27,126 INFO L87 Difference]: Start difference. First operand 1725 states and 2698 transitions. Second operand 9 states.