java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec14_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:08:11,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:08:11,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:08:11,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:08:11,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:08:11,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:08:11,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:08:11,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:08:11,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:08:11,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:08:11,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:08:11,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:08:11,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:08:11,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:08:11,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:08:11,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:08:11,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:08:11,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:08:11,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:08:11,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:08:11,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:08:11,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:08:11,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:08:11,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:08:11,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:08:11,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:08:11,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:08:11,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:08:11,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:08:11,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:08:11,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:08:11,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:08:11,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:08:11,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:08:11,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:08:11,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:08:11,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:08:11,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:08:11,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:08:11,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:08:11,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:08:11,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:08:11,867 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:08:11,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:08:11,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:08:11,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:08:11,869 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:08:11,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:08:11,869 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:08:11,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:08:11,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:08:11,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:08:11,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:08:11,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:08:11,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:08:11,871 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:08:11,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:08:11,872 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:08:11,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:08:11,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:08:11,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:08:11,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:08:11,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:08:11,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:11,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:08:11,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:08:11,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:08:11,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:08:11,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:08:11,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:08:11,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:08:12,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:08:12,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:08:12,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:08:12,200 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:08:12,201 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:08:12,201 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product31.cil.c [2019-10-15 01:08:12,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f335d201b/1e8bde7392d44c30b6309ec5d6e26e09/FLAG2f2d28eb7 [2019-10-15 01:08:12,953 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:08:12,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product31.cil.c [2019-10-15 01:08:12,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f335d201b/1e8bde7392d44c30b6309ec5d6e26e09/FLAG2f2d28eb7 [2019-10-15 01:08:13,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f335d201b/1e8bde7392d44c30b6309ec5d6e26e09 [2019-10-15 01:08:13,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:08:13,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:08:13,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:13,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:08:13,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:08:13,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:13" (1/1) ... [2019-10-15 01:08:13,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5abb0ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:13, skipping insertion in model container [2019-10-15 01:08:13,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:13" (1/1) ... [2019-10-15 01:08:13,110 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:08:13,200 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:08:13,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:13,967 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:08:14,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:14,200 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:08:14,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:14 WrapperNode [2019-10-15 01:08:14,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:14,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:08:14,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:08:14,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:08:14,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:14" (1/1) ... [2019-10-15 01:08:14,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:14" (1/1) ... [2019-10-15 01:08:14,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:14" (1/1) ... [2019-10-15 01:08:14,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:14" (1/1) ... [2019-10-15 01:08:14,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:14" (1/1) ... [2019-10-15 01:08:14,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:14" (1/1) ... [2019-10-15 01:08:14,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:14" (1/1) ... [2019-10-15 01:08:14,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:08:14,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:08:14,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:08:14,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:08:14,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:08:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:08:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:08:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:08:14,489 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:08:14,490 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:08:14,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:08:14,490 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:08:14,491 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:08:14,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:08:14,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:14,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:14,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:14,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:08:14,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:08:14,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:08:14,496 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:08:14,496 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:08:14,496 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:08:14,496 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:08:14,497 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:08:14,497 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:08:14,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:08:14,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:08:14,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:08:14,498 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:08:14,498 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:08:14,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:08:14,499 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:08:14,499 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:08:14,499 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:08:14,499 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 01:08:14,499 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:08:14,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:08:14,500 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:08:14,501 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:08:14,501 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:08:14,502 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:08:14,502 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:08:14,503 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:08:14,503 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:08:14,503 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:08:14,504 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:08:14,504 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:08:14,504 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:08:14,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:08:14,505 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:08:14,505 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:08:14,505 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:08:14,505 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:14,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:08:14,506 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:08:14,506 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:08:14,506 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:08:14,507 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:08:14,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:08:14,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:08:14,507 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:08:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:08:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:08:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:08:14,509 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:08:14,509 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:08:14,510 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:08:14,510 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:08:14,510 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:08:14,510 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:08:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:08:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:08:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:08:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:08:14,512 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:08:14,513 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:08:14,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:08:14,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-15 01:08:14,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:08:14,514 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:08:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:08:14,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:08:14,515 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:08:14,515 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:08:14,515 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:08:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:08:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:08:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:08:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:08:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:08:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:08:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:08:14,518 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:08:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:08:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:08:14,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:08:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:08:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:08:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:08:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:08:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:08:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:08:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:08:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:08:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:08:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:08:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:08:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:08:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:08:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:08:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:08:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:08:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:08:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:08:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:08:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:08:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:08:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:08:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:08:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:08:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:08:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:08:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:08:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:08:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:08:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:08:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:08:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:08:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:08:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 01:08:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:08:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:08:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:08:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:08:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:08:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:08:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:08:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:08:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:08:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:08:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:08:14,539 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:08:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:08:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-15 01:08:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:08:14,547 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:08:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:08:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:08:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:08:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:08:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:08:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:08:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:08:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:08:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:08:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:08:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:08:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:08:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:08:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:08:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:08:14,551 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:08:14,551 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:08:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:08:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:08:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:08:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:08:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:08:17,091 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:08:17,092 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:08:17,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:17 BoogieIcfgContainer [2019-10-15 01:08:17,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:08:17,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:08:17,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:08:17,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:08:17,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:08:13" (1/3) ... [2019-10-15 01:08:17,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37783173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:17, skipping insertion in model container [2019-10-15 01:08:17,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:14" (2/3) ... [2019-10-15 01:08:17,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37783173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:17, skipping insertion in model container [2019-10-15 01:08:17,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:17" (3/3) ... [2019-10-15 01:08:17,102 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product31.cil.c [2019-10-15 01:08:17,113 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:08:17,125 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:08:17,137 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:08:17,178 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:08:17,178 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:08:17,178 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:08:17,178 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:08:17,178 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:08:17,179 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:08:17,179 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:08:17,179 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:08:17,235 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states. [2019-10-15 01:08:17,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 01:08:17,280 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:17,281 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:17,284 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:17,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:17,291 INFO L82 PathProgramCache]: Analyzing trace with hash 716807199, now seen corresponding path program 1 times [2019-10-15 01:08:17,301 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:17,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380088157] [2019-10-15 01:08:17,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,302 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:18,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380088157] [2019-10-15 01:08:18,009 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:18,010 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:18,010 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516944704] [2019-10-15 01:08:18,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:18,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:18,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:18,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:18,037 INFO L87 Difference]: Start difference. First operand 782 states. Second operand 4 states. [2019-10-15 01:08:18,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:18,251 INFO L93 Difference]: Finished difference Result 1262 states and 2006 transitions. [2019-10-15 01:08:18,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:18,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2019-10-15 01:08:18,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:18,279 INFO L225 Difference]: With dead ends: 1262 [2019-10-15 01:08:18,279 INFO L226 Difference]: Without dead ends: 634 [2019-10-15 01:08:18,292 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-15 01:08:18,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2019-10-15 01:08:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2019-10-15 01:08:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 994 transitions. [2019-10-15 01:08:18,424 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 994 transitions. Word has length 135 [2019-10-15 01:08:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:18,425 INFO L462 AbstractCegarLoop]: Abstraction has 634 states and 994 transitions. [2019-10-15 01:08:18,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:18,425 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 994 transitions. [2019-10-15 01:08:18,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 01:08:18,438 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:18,438 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:18,439 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:18,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:18,440 INFO L82 PathProgramCache]: Analyzing trace with hash -936222646, now seen corresponding path program 1 times [2019-10-15 01:08:18,440 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:18,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57003065] [2019-10-15 01:08:18,440 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,441 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:18,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57003065] [2019-10-15 01:08:18,714 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:18,714 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:18,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860705137] [2019-10-15 01:08:18,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:18,728 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:18,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:18,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:18,729 INFO L87 Difference]: Start difference. First operand 634 states and 994 transitions. Second operand 4 states. [2019-10-15 01:08:18,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:18,838 INFO L93 Difference]: Finished difference Result 1235 states and 1949 transitions. [2019-10-15 01:08:18,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:18,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2019-10-15 01:08:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:18,850 INFO L225 Difference]: With dead ends: 1235 [2019-10-15 01:08:18,851 INFO L226 Difference]: Without dead ends: 634 [2019-10-15 01:08:18,860 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:18,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-15 01:08:18,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2019-10-15 01:08:18,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2019-10-15 01:08:18,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 993 transitions. [2019-10-15 01:08:18,921 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 993 transitions. Word has length 136 [2019-10-15 01:08:18,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:18,923 INFO L462 AbstractCegarLoop]: Abstraction has 634 states and 993 transitions. [2019-10-15 01:08:18,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 993 transitions. [2019-10-15 01:08:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 01:08:18,938 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:18,938 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:18,939 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:18,939 INFO L82 PathProgramCache]: Analyzing trace with hash -291903749, now seen corresponding path program 1 times [2019-10-15 01:08:18,940 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:18,940 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172263398] [2019-10-15 01:08:18,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,941 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:19,199 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172263398] [2019-10-15 01:08:19,199 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:19,199 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:19,199 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884850712] [2019-10-15 01:08:19,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:19,200 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:19,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:19,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:19,201 INFO L87 Difference]: Start difference. First operand 634 states and 993 transitions. Second operand 4 states. [2019-10-15 01:08:19,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:19,288 INFO L93 Difference]: Finished difference Result 1235 states and 1948 transitions. [2019-10-15 01:08:19,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:19,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2019-10-15 01:08:19,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:19,295 INFO L225 Difference]: With dead ends: 1235 [2019-10-15 01:08:19,295 INFO L226 Difference]: Without dead ends: 634 [2019-10-15 01:08:19,299 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:19,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-15 01:08:19,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2019-10-15 01:08:19,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2019-10-15 01:08:19,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 992 transitions. [2019-10-15 01:08:19,333 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 992 transitions. Word has length 137 [2019-10-15 01:08:19,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:19,333 INFO L462 AbstractCegarLoop]: Abstraction has 634 states and 992 transitions. [2019-10-15 01:08:19,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:19,333 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 992 transitions. [2019-10-15 01:08:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 01:08:19,338 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:19,339 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:19,339 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:19,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:19,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1444217882, now seen corresponding path program 1 times [2019-10-15 01:08:19,340 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:19,340 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451345158] [2019-10-15 01:08:19,340 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,340 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:19,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451345158] [2019-10-15 01:08:19,503 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:19,503 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:19,503 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928937442] [2019-10-15 01:08:19,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:19,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:19,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:19,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:19,505 INFO L87 Difference]: Start difference. First operand 634 states and 992 transitions. Second operand 4 states. [2019-10-15 01:08:19,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:19,589 INFO L93 Difference]: Finished difference Result 1235 states and 1947 transitions. [2019-10-15 01:08:19,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:19,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2019-10-15 01:08:19,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:19,598 INFO L225 Difference]: With dead ends: 1235 [2019-10-15 01:08:19,599 INFO L226 Difference]: Without dead ends: 634 [2019-10-15 01:08:19,602 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:19,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-15 01:08:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2019-10-15 01:08:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2019-10-15 01:08:19,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 991 transitions. [2019-10-15 01:08:19,628 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 991 transitions. Word has length 138 [2019-10-15 01:08:19,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:19,629 INFO L462 AbstractCegarLoop]: Abstraction has 634 states and 991 transitions. [2019-10-15 01:08:19,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:19,629 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 991 transitions. [2019-10-15 01:08:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-15 01:08:19,634 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:19,634 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:19,634 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:19,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1837386199, now seen corresponding path program 1 times [2019-10-15 01:08:19,635 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:19,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567309505] [2019-10-15 01:08:19,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,636 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:19,854 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567309505] [2019-10-15 01:08:19,855 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:19,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:19,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17259846] [2019-10-15 01:08:19,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:19,858 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:19,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:19,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:19,860 INFO L87 Difference]: Start difference. First operand 634 states and 991 transitions. Second operand 4 states. [2019-10-15 01:08:19,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:19,939 INFO L93 Difference]: Finished difference Result 1235 states and 1946 transitions. [2019-10-15 01:08:19,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:19,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2019-10-15 01:08:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:19,952 INFO L225 Difference]: With dead ends: 1235 [2019-10-15 01:08:19,952 INFO L226 Difference]: Without dead ends: 634 [2019-10-15 01:08:19,961 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-15 01:08:19,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2019-10-15 01:08:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2019-10-15 01:08:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 990 transitions. [2019-10-15 01:08:19,991 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 990 transitions. Word has length 139 [2019-10-15 01:08:19,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:19,992 INFO L462 AbstractCegarLoop]: Abstraction has 634 states and 990 transitions. [2019-10-15 01:08:19,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:19,992 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 990 transitions. [2019-10-15 01:08:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 01:08:19,997 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:19,998 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:19,998 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:19,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:19,999 INFO L82 PathProgramCache]: Analyzing trace with hash 836534146, now seen corresponding path program 1 times [2019-10-15 01:08:20,000 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:20,000 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226701583] [2019-10-15 01:08:20,001 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,001 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:20,204 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226701583] [2019-10-15 01:08:20,205 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:20,206 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:08:20,206 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630745087] [2019-10-15 01:08:20,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:08:20,207 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:20,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:08:20,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:08:20,207 INFO L87 Difference]: Start difference. First operand 634 states and 990 transitions. Second operand 10 states. [2019-10-15 01:08:20,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:20,407 INFO L93 Difference]: Finished difference Result 1240 states and 1953 transitions. [2019-10-15 01:08:20,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:08:20,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 140 [2019-10-15 01:08:20,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:20,420 INFO L225 Difference]: With dead ends: 1240 [2019-10-15 01:08:20,420 INFO L226 Difference]: Without dead ends: 643 [2019-10-15 01:08:20,425 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:20,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-15 01:08:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2019-10-15 01:08:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2019-10-15 01:08:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1000 transitions. [2019-10-15 01:08:20,457 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1000 transitions. Word has length 140 [2019-10-15 01:08:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:20,458 INFO L462 AbstractCegarLoop]: Abstraction has 641 states and 1000 transitions. [2019-10-15 01:08:20,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:08:20,458 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1000 transitions. [2019-10-15 01:08:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 01:08:20,463 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:20,464 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:20,464 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:20,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:20,464 INFO L82 PathProgramCache]: Analyzing trace with hash -150048543, now seen corresponding path program 1 times [2019-10-15 01:08:20,465 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:20,465 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108952337] [2019-10-15 01:08:20,465 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,465 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:20,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108952337] [2019-10-15 01:08:20,670 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:20,670 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:20,670 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447658761] [2019-10-15 01:08:20,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:20,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:20,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:20,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:20,672 INFO L87 Difference]: Start difference. First operand 641 states and 1000 transitions. Second operand 4 states. [2019-10-15 01:08:20,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:20,749 INFO L93 Difference]: Finished difference Result 1241 states and 1954 transitions. [2019-10-15 01:08:20,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:20,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2019-10-15 01:08:20,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:20,754 INFO L225 Difference]: With dead ends: 1241 [2019-10-15 01:08:20,755 INFO L226 Difference]: Without dead ends: 637 [2019-10-15 01:08:20,758 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-10-15 01:08:20,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2019-10-15 01:08:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2019-10-15 01:08:20,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 993 transitions. [2019-10-15 01:08:20,781 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 993 transitions. Word has length 140 [2019-10-15 01:08:20,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:20,781 INFO L462 AbstractCegarLoop]: Abstraction has 637 states and 993 transitions. [2019-10-15 01:08:20,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:20,781 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 993 transitions. [2019-10-15 01:08:20,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 01:08:20,786 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:20,786 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:20,787 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:20,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:20,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1527718111, now seen corresponding path program 1 times [2019-10-15 01:08:20,787 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:20,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977553702] [2019-10-15 01:08:20,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:20,931 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977553702] [2019-10-15 01:08:20,931 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:20,931 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:20,932 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272223072] [2019-10-15 01:08:20,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:20,932 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:20,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:20,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:20,933 INFO L87 Difference]: Start difference. First operand 637 states and 993 transitions. Second operand 6 states. [2019-10-15 01:08:21,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:21,276 INFO L93 Difference]: Finished difference Result 1254 states and 1978 transitions. [2019-10-15 01:08:21,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:08:21,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2019-10-15 01:08:21,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:21,284 INFO L225 Difference]: With dead ends: 1254 [2019-10-15 01:08:21,285 INFO L226 Difference]: Without dead ends: 645 [2019-10-15 01:08:21,290 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:21,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2019-10-15 01:08:21,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 642. [2019-10-15 01:08:21,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-15 01:08:21,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 994 transitions. [2019-10-15 01:08:21,323 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 994 transitions. Word has length 141 [2019-10-15 01:08:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:21,324 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 994 transitions. [2019-10-15 01:08:21,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:21,324 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 994 transitions. [2019-10-15 01:08:21,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-15 01:08:21,331 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:21,331 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:21,332 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:21,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:21,332 INFO L82 PathProgramCache]: Analyzing trace with hash 567172613, now seen corresponding path program 1 times [2019-10-15 01:08:21,333 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:21,333 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082538611] [2019-10-15 01:08:21,333 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,333 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:21,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082538611] [2019-10-15 01:08:21,575 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:21,575 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:21,576 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642666452] [2019-10-15 01:08:21,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:21,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:21,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:21,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:21,579 INFO L87 Difference]: Start difference. First operand 642 states and 994 transitions. Second operand 6 states. [2019-10-15 01:08:21,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:21,938 INFO L93 Difference]: Finished difference Result 1217 states and 1893 transitions. [2019-10-15 01:08:21,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:21,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2019-10-15 01:08:21,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:21,943 INFO L225 Difference]: With dead ends: 1217 [2019-10-15 01:08:21,944 INFO L226 Difference]: Without dead ends: 642 [2019-10-15 01:08:21,947 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-15 01:08:21,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-15 01:08:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-15 01:08:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 990 transitions. [2019-10-15 01:08:21,969 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 990 transitions. Word has length 142 [2019-10-15 01:08:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:21,970 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 990 transitions. [2019-10-15 01:08:21,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 990 transitions. [2019-10-15 01:08:21,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 01:08:21,976 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:21,976 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:21,976 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:21,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:21,977 INFO L82 PathProgramCache]: Analyzing trace with hash -265339100, now seen corresponding path program 1 times [2019-10-15 01:08:21,977 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:21,977 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173287071] [2019-10-15 01:08:21,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:22,114 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173287071] [2019-10-15 01:08:22,114 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:22,114 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:22,115 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191447687] [2019-10-15 01:08:22,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:22,115 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:22,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:22,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:22,116 INFO L87 Difference]: Start difference. First operand 642 states and 990 transitions. Second operand 6 states. [2019-10-15 01:08:22,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:22,404 INFO L93 Difference]: Finished difference Result 1217 states and 1889 transitions. [2019-10-15 01:08:22,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:22,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2019-10-15 01:08:22,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:22,417 INFO L225 Difference]: With dead ends: 1217 [2019-10-15 01:08:22,417 INFO L226 Difference]: Without dead ends: 642 [2019-10-15 01:08:22,429 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:22,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-15 01:08:22,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-15 01:08:22,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-15 01:08:22,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 986 transitions. [2019-10-15 01:08:22,466 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 986 transitions. Word has length 143 [2019-10-15 01:08:22,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:22,467 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 986 transitions. [2019-10-15 01:08:22,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 986 transitions. [2019-10-15 01:08:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 01:08:22,474 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:22,475 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:22,475 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:22,476 INFO L82 PathProgramCache]: Analyzing trace with hash 11991972, now seen corresponding path program 1 times [2019-10-15 01:08:22,476 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:22,476 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284089426] [2019-10-15 01:08:22,477 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:22,477 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:22,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:22,659 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284089426] [2019-10-15 01:08:22,659 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:22,659 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:08:22,660 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672204209] [2019-10-15 01:08:22,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:08:22,661 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:22,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:08:22,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:08:22,662 INFO L87 Difference]: Start difference. First operand 642 states and 986 transitions. Second operand 7 states. [2019-10-15 01:08:22,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:22,773 INFO L93 Difference]: Finished difference Result 1220 states and 1889 transitions. [2019-10-15 01:08:22,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:08:22,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2019-10-15 01:08:22,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:22,779 INFO L225 Difference]: With dead ends: 1220 [2019-10-15 01:08:22,779 INFO L226 Difference]: Without dead ends: 624 [2019-10-15 01:08:22,783 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:22,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-10-15 01:08:22,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 621. [2019-10-15 01:08:22,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-15 01:08:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 949 transitions. [2019-10-15 01:08:22,815 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 949 transitions. Word has length 143 [2019-10-15 01:08:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:22,816 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 949 transitions. [2019-10-15 01:08:22,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:08:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 949 transitions. [2019-10-15 01:08:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-15 01:08:22,822 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:22,822 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:22,822 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:22,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1423770774, now seen corresponding path program 1 times [2019-10-15 01:08:22,823 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:22,823 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174075291] [2019-10-15 01:08:22,823 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:22,823 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:22,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:22,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174075291] [2019-10-15 01:08:22,991 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:22,992 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:22,992 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417788317] [2019-10-15 01:08:22,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:22,993 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:22,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:22,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:22,993 INFO L87 Difference]: Start difference. First operand 621 states and 949 transitions. Second operand 6 states. [2019-10-15 01:08:23,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:23,134 INFO L93 Difference]: Finished difference Result 1196 states and 1848 transitions. [2019-10-15 01:08:23,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:23,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2019-10-15 01:08:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:23,139 INFO L225 Difference]: With dead ends: 1196 [2019-10-15 01:08:23,139 INFO L226 Difference]: Without dead ends: 621 [2019-10-15 01:08:23,143 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:23,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-15 01:08:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-15 01:08:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-15 01:08:23,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 948 transitions. [2019-10-15 01:08:23,164 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 948 transitions. Word has length 144 [2019-10-15 01:08:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:23,165 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 948 transitions. [2019-10-15 01:08:23,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 948 transitions. [2019-10-15 01:08:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 01:08:23,170 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:23,170 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:23,170 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:23,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:23,171 INFO L82 PathProgramCache]: Analyzing trace with hash 199180649, now seen corresponding path program 1 times [2019-10-15 01:08:23,171 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:23,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241309871] [2019-10-15 01:08:23,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:23,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:23,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:23,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241309871] [2019-10-15 01:08:23,302 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:23,302 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:23,302 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958990039] [2019-10-15 01:08:23,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:23,303 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:23,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:23,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:23,305 INFO L87 Difference]: Start difference. First operand 621 states and 948 transitions. Second operand 6 states. [2019-10-15 01:08:23,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:23,444 INFO L93 Difference]: Finished difference Result 1196 states and 1847 transitions. [2019-10-15 01:08:23,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:23,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2019-10-15 01:08:23,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:23,450 INFO L225 Difference]: With dead ends: 1196 [2019-10-15 01:08:23,450 INFO L226 Difference]: Without dead ends: 621 [2019-10-15 01:08:23,453 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:23,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-15 01:08:23,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-15 01:08:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-15 01:08:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 947 transitions. [2019-10-15 01:08:23,478 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 947 transitions. Word has length 145 [2019-10-15 01:08:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:23,480 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 947 transitions. [2019-10-15 01:08:23,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:23,480 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 947 transitions. [2019-10-15 01:08:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 01:08:23,484 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:23,485 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:23,485 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:23,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:23,485 INFO L82 PathProgramCache]: Analyzing trace with hash 2145662159, now seen corresponding path program 1 times [2019-10-15 01:08:23,486 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:23,486 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119511895] [2019-10-15 01:08:23,486 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:23,486 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:23,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:23,686 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119511895] [2019-10-15 01:08:23,687 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:23,687 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:08:23,687 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674892199] [2019-10-15 01:08:23,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:08:23,688 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:23,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:08:23,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:08:23,688 INFO L87 Difference]: Start difference. First operand 621 states and 947 transitions. Second operand 12 states. [2019-10-15 01:08:24,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:24,034 INFO L93 Difference]: Finished difference Result 1202 states and 1857 transitions. [2019-10-15 01:08:24,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 01:08:24,036 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 146 [2019-10-15 01:08:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:24,041 INFO L225 Difference]: With dead ends: 1202 [2019-10-15 01:08:24,042 INFO L226 Difference]: Without dead ends: 628 [2019-10-15 01:08:24,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:24,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-15 01:08:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 626. [2019-10-15 01:08:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-15 01:08:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 953 transitions. [2019-10-15 01:08:24,075 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 953 transitions. Word has length 146 [2019-10-15 01:08:24,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:24,077 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 953 transitions. [2019-10-15 01:08:24,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:08:24,077 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 953 transitions. [2019-10-15 01:08:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-15 01:08:24,082 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:24,082 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:24,083 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:24,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:24,083 INFO L82 PathProgramCache]: Analyzing trace with hash -661438960, now seen corresponding path program 1 times [2019-10-15 01:08:24,083 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:24,084 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940261764] [2019-10-15 01:08:24,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:24,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:24,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:24,258 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:08:24,258 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940261764] [2019-10-15 01:08:24,258 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346287655] [2019-10-15 01:08:24,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:24,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 2628 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:24,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:08:24,877 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:08:25,203 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:25,203 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-10-15 01:08:25,203 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637417607] [2019-10-15 01:08:25,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:25,204 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:25,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:25,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:08:25,205 INFO L87 Difference]: Start difference. First operand 626 states and 953 transitions. Second operand 5 states. [2019-10-15 01:08:26,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:26,153 INFO L93 Difference]: Finished difference Result 1207 states and 1893 transitions. [2019-10-15 01:08:26,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:26,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-10-15 01:08:26,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:26,159 INFO L225 Difference]: With dead ends: 1207 [2019-10-15 01:08:26,159 INFO L226 Difference]: Without dead ends: 634 [2019-10-15 01:08:26,163 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 284 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:26,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-15 01:08:26,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2019-10-15 01:08:26,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2019-10-15 01:08:26,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 966 transitions. [2019-10-15 01:08:26,188 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 966 transitions. Word has length 147 [2019-10-15 01:08:26,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:26,189 INFO L462 AbstractCegarLoop]: Abstraction has 634 states and 966 transitions. [2019-10-15 01:08:26,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:26,189 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 966 transitions. [2019-10-15 01:08:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-15 01:08:26,194 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:26,194 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:26,410 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:26,410 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:26,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:26,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1780339208, now seen corresponding path program 1 times [2019-10-15 01:08:26,412 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:26,412 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196125452] [2019-10-15 01:08:26,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:26,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:26,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:26,584 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 01:08:26,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196125452] [2019-10-15 01:08:26,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702065654] [2019-10-15 01:08:26,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:27,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 2631 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:27,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 01:08:27,166 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 01:08:27,539 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:27,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-10-15 01:08:27,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319273612] [2019-10-15 01:08:27,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:27,540 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:27,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:27,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:08:27,541 INFO L87 Difference]: Start difference. First operand 634 states and 966 transitions. Second operand 5 states. [2019-10-15 01:08:28,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:28,454 INFO L93 Difference]: Finished difference Result 1223 states and 1916 transitions. [2019-10-15 01:08:28,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:28,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-15 01:08:28,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:28,461 INFO L225 Difference]: With dead ends: 1223 [2019-10-15 01:08:28,461 INFO L226 Difference]: Without dead ends: 642 [2019-10-15 01:08:28,465 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 290 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-15 01:08:28,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-15 01:08:28,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-15 01:08:28,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 979 transitions. [2019-10-15 01:08:28,488 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 979 transitions. Word has length 150 [2019-10-15 01:08:28,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:28,488 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 979 transitions. [2019-10-15 01:08:28,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:28,489 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 979 transitions. [2019-10-15 01:08:28,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-15 01:08:28,493 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:28,493 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:28,708 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:28,709 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:28,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:28,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1873201556, now seen corresponding path program 1 times [2019-10-15 01:08:28,709 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:28,710 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868606515] [2019-10-15 01:08:28,710 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:28,710 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:28,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:08:28,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868606515] [2019-10-15 01:08:28,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902836664] [2019-10-15 01:08:28,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:29,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:29,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:08:29,473 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:08:29,733 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:29,734 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-10-15 01:08:29,734 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465950172] [2019-10-15 01:08:29,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:29,735 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:29,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:29,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:08:29,735 INFO L87 Difference]: Start difference. First operand 642 states and 979 transitions. Second operand 5 states. [2019-10-15 01:08:30,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:30,674 INFO L93 Difference]: Finished difference Result 1239 states and 1939 transitions. [2019-10-15 01:08:30,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:30,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2019-10-15 01:08:30,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:30,680 INFO L225 Difference]: With dead ends: 1239 [2019-10-15 01:08:30,680 INFO L226 Difference]: Without dead ends: 650 [2019-10-15 01:08:30,684 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 296 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:30,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-10-15 01:08:30,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2019-10-15 01:08:30,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2019-10-15 01:08:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 992 transitions. [2019-10-15 01:08:30,705 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 992 transitions. Word has length 153 [2019-10-15 01:08:30,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:30,706 INFO L462 AbstractCegarLoop]: Abstraction has 650 states and 992 transitions. [2019-10-15 01:08:30,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 992 transitions. [2019-10-15 01:08:30,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-15 01:08:30,710 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:30,711 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:30,917 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:30,918 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:30,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:30,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1298016900, now seen corresponding path program 1 times [2019-10-15 01:08:30,919 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:30,920 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315501702] [2019-10-15 01:08:30,920 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:30,920 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:30,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:31,036 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:08:31,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315501702] [2019-10-15 01:08:31,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345398093] [2019-10-15 01:08:31,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:31,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:31,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:08:31,595 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:08:32,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:32,019 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 12 [2019-10-15 01:08:32,019 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933109975] [2019-10-15 01:08:32,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:32,020 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:32,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:32,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:08:32,021 INFO L87 Difference]: Start difference. First operand 650 states and 992 transitions. Second operand 5 states. [2019-10-15 01:08:32,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:32,965 INFO L93 Difference]: Finished difference Result 1255 states and 1962 transitions. [2019-10-15 01:08:32,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:32,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2019-10-15 01:08:32,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:32,970 INFO L225 Difference]: With dead ends: 1255 [2019-10-15 01:08:32,971 INFO L226 Difference]: Without dead ends: 658 [2019-10-15 01:08:32,974 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 302 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:08:32,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2019-10-15 01:08:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2019-10-15 01:08:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2019-10-15 01:08:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1005 transitions. [2019-10-15 01:08:32,995 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1005 transitions. Word has length 156 [2019-10-15 01:08:32,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:32,996 INFO L462 AbstractCegarLoop]: Abstraction has 658 states and 1005 transitions. [2019-10-15 01:08:32,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:32,996 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1005 transitions. [2019-10-15 01:08:33,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 01:08:33,000 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:33,000 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:33,207 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:33,208 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:33,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:33,208 INFO L82 PathProgramCache]: Analyzing trace with hash -878049512, now seen corresponding path program 1 times [2019-10-15 01:08:33,209 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:33,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730773821] [2019-10-15 01:08:33,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:33,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:33,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:33,386 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:33,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730773821] [2019-10-15 01:08:33,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926657270] [2019-10-15 01:08:33,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:33,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 2640 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-15 01:08:33,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 01:08:33,950 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:08:34,087 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:34,087 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2019-10-15 01:08:34,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846084713] [2019-10-15 01:08:34,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:08:34,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:34,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:08:34,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:34,089 INFO L87 Difference]: Start difference. First operand 658 states and 1005 transitions. Second operand 3 states. [2019-10-15 01:08:34,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:34,132 INFO L93 Difference]: Finished difference Result 1470 states and 2248 transitions. [2019-10-15 01:08:34,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:08:34,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-15 01:08:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:34,143 INFO L225 Difference]: With dead ends: 1470 [2019-10-15 01:08:34,143 INFO L226 Difference]: Without dead ends: 865 [2019-10-15 01:08:34,149 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:34,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2019-10-15 01:08:34,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 862. [2019-10-15 01:08:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2019-10-15 01:08:34,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1292 transitions. [2019-10-15 01:08:34,188 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1292 transitions. Word has length 159 [2019-10-15 01:08:34,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:34,190 INFO L462 AbstractCegarLoop]: Abstraction has 862 states and 1292 transitions. [2019-10-15 01:08:34,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:08:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1292 transitions. [2019-10-15 01:08:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 01:08:34,196 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:34,196 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:34,402 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:34,403 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:34,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:34,403 INFO L82 PathProgramCache]: Analyzing trace with hash -954950310, now seen corresponding path program 1 times [2019-10-15 01:08:34,404 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:34,404 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931931276] [2019-10-15 01:08:34,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:34,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:34,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:34,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931931276] [2019-10-15 01:08:34,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977324119] [2019-10-15 01:08:34,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:35,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 2643 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-15 01:08:35,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 01:08:35,184 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:08:35,324 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:35,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10] total 14 [2019-10-15 01:08:35,324 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080182570] [2019-10-15 01:08:35,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:35,326 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:35,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:35,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:35,326 INFO L87 Difference]: Start difference. First operand 862 states and 1292 transitions. Second operand 6 states. [2019-10-15 01:08:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:36,148 INFO L93 Difference]: Finished difference Result 2484 states and 3814 transitions. [2019-10-15 01:08:36,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:08:36,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2019-10-15 01:08:36,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:36,163 INFO L225 Difference]: With dead ends: 2484 [2019-10-15 01:08:36,163 INFO L226 Difference]: Without dead ends: 1676 [2019-10-15 01:08:36,169 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:08:36,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-10-15 01:08:36,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1667. [2019-10-15 01:08:36,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1667 states. [2019-10-15 01:08:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2540 transitions. [2019-10-15 01:08:36,298 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2540 transitions. Word has length 159 [2019-10-15 01:08:36,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:36,300 INFO L462 AbstractCegarLoop]: Abstraction has 1667 states and 2540 transitions. [2019-10-15 01:08:36,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:36,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2540 transitions. [2019-10-15 01:08:36,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:08:36,308 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:36,308 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:36,527 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:36,527 INFO L410 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:36,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1910070003, now seen corresponding path program 1 times [2019-10-15 01:08:36,528 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:36,528 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085659278] [2019-10-15 01:08:36,529 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:36,529 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:36,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:36,783 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085659278] [2019-10-15 01:08:36,783 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537907181] [2019-10-15 01:08:36,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:37,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:08:37,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 01:08:37,350 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:08:37,465 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:37,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2019-10-15 01:08:37,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142825688] [2019-10-15 01:08:37,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:08:37,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:37,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:08:37,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:37,467 INFO L87 Difference]: Start difference. First operand 1667 states and 2540 transitions. Second operand 3 states. [2019-10-15 01:08:37,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:37,590 INFO L93 Difference]: Finished difference Result 4078 states and 6298 transitions. [2019-10-15 01:08:37,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:08:37,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2019-10-15 01:08:37,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:37,609 INFO L225 Difference]: With dead ends: 4078 [2019-10-15 01:08:37,610 INFO L226 Difference]: Without dead ends: 2467 [2019-10-15 01:08:37,618 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 337 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:37,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2019-10-15 01:08:37,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 1667. [2019-10-15 01:08:37,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1667 states. [2019-10-15 01:08:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2539 transitions. [2019-10-15 01:08:37,705 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2539 transitions. Word has length 164 [2019-10-15 01:08:37,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:37,706 INFO L462 AbstractCegarLoop]: Abstraction has 1667 states and 2539 transitions. [2019-10-15 01:08:37,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:08:37,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2539 transitions. [2019-10-15 01:08:37,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:08:37,711 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:37,711 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:37,920 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:37,927 INFO L410 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:37,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:37,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1486423281, now seen corresponding path program 1 times [2019-10-15 01:08:37,928 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:37,928 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947855211] [2019-10-15 01:08:37,929 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:37,929 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:37,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:38,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947855211] [2019-10-15 01:08:38,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458138421] [2019-10-15 01:08:38,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:38,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-15 01:08:38,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 01:08:38,791 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:39,217 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:39,218 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 21 [2019-10-15 01:08:39,218 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155143396] [2019-10-15 01:08:39,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:08:39,219 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:39,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:08:39,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:08:39,219 INFO L87 Difference]: Start difference. First operand 1667 states and 2539 transitions. Second operand 9 states. [2019-10-15 01:08:45,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:45,023 INFO L93 Difference]: Finished difference Result 5114 states and 7962 transitions. [2019-10-15 01:08:45,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:08:45,027 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2019-10-15 01:08:45,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:45,051 INFO L225 Difference]: With dead ends: 5114 [2019-10-15 01:08:45,052 INFO L226 Difference]: Without dead ends: 3500 [2019-10-15 01:08:45,062 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:08:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2019-10-15 01:08:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 3443. [2019-10-15 01:08:45,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3443 states. [2019-10-15 01:08:45,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 5311 transitions. [2019-10-15 01:08:45,211 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 5311 transitions. Word has length 164 [2019-10-15 01:08:45,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:45,211 INFO L462 AbstractCegarLoop]: Abstraction has 3443 states and 5311 transitions. [2019-10-15 01:08:45,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:08:45,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 5311 transitions. [2019-10-15 01:08:45,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 01:08:45,220 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:45,220 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:45,438 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:45,439 INFO L410 AbstractCegarLoop]: === Iteration 23 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:45,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:45,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1959929722, now seen corresponding path program 1 times [2019-10-15 01:08:45,439 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:45,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423816269] [2019-10-15 01:08:45,440 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:45,440 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:45,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:45,586 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:08:45,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423816269] [2019-10-15 01:08:45,587 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:45,587 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 01:08:45,587 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680409872] [2019-10-15 01:08:45,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:08:45,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:45,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:08:45,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:08:45,588 INFO L87 Difference]: Start difference. First operand 3443 states and 5311 transitions. Second operand 9 states. [2019-10-15 01:08:45,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:45,850 INFO L93 Difference]: Finished difference Result 6685 states and 10347 transitions. [2019-10-15 01:08:45,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:08:45,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2019-10-15 01:08:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:45,875 INFO L225 Difference]: With dead ends: 6685 [2019-10-15 01:08:45,876 INFO L226 Difference]: Without dead ends: 3289 [2019-10-15 01:08:45,893 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:45,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2019-10-15 01:08:46,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3281. [2019-10-15 01:08:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3281 states. [2019-10-15 01:08:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 5061 transitions. [2019-10-15 01:08:46,115 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 5061 transitions. Word has length 167 [2019-10-15 01:08:46,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:46,116 INFO L462 AbstractCegarLoop]: Abstraction has 3281 states and 5061 transitions. [2019-10-15 01:08:46,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:08:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 5061 transitions. [2019-10-15 01:08:46,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:08:46,122 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:46,123 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:46,123 INFO L410 AbstractCegarLoop]: === Iteration 24 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:46,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:46,123 INFO L82 PathProgramCache]: Analyzing trace with hash 2073251408, now seen corresponding path program 1 times [2019-10-15 01:08:46,124 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:46,124 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792792833] [2019-10-15 01:08:46,124 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:46,124 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:46,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:46,315 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792792833] [2019-10-15 01:08:46,315 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24321771] [2019-10-15 01:08:46,315 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 [2019-10-15 01:08:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:46,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-15 01:08:46,883 INFO L279 TraceCheckSpWp]: Computing forward predicates...