java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:07:40,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:07:40,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:07:40,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:07:40,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:07:40,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:07:40,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:07:40,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:07:40,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:07:40,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:07:40,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:07:40,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:07:40,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:07:40,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:07:40,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:07:40,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:07:40,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:07:40,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:07:40,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:07:40,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:07:40,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:07:40,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:07:40,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:07:40,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:07:40,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:07:40,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:07:40,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:07:40,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:07:40,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:07:40,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:07:40,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:07:40,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:07:40,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:07:40,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:07:40,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:07:40,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:07:40,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:07:40,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:07:40,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:07:40,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:07:40,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:07:40,413 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 01:07:40,431 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:07:40,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:07:40,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:07:40,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:07:40,435 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:07:40,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:07:40,436 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:07:40,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:07:40,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:07:40,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:07:40,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:07:40,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:07:40,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:07:40,438 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:07:40,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:07:40,439 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:07:40,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:07:40,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:07:40,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:07:40,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:07:40,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:07:40,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:07:40,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:07:40,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:07:40,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:07:40,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:07:40,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:07:40,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:07:40,441 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 01:07:40,738 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:07:40,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:07:40,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:07:40,756 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:07:40,757 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:07:40,758 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c [2019-10-15 01:07:40,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4dfd20c5/a7de633a02b7435d8ff9b2f9eb0d6f6f/FLAG95e10077b [2019-10-15 01:07:41,411 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:07:41,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c [2019-10-15 01:07:41,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4dfd20c5/a7de633a02b7435d8ff9b2f9eb0d6f6f/FLAG95e10077b [2019-10-15 01:07:41,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4dfd20c5/a7de633a02b7435d8ff9b2f9eb0d6f6f [2019-10-15 01:07:41,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:07:41,703 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:07:41,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:07:41,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:07:41,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:07:41,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:07:41" (1/1) ... [2019-10-15 01:07:41,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c301fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:41, skipping insertion in model container [2019-10-15 01:07:41,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:07:41" (1/1) ... [2019-10-15 01:07:41,721 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:07:41,797 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:07:42,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:07:42,561 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:07:42,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:07:42,814 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:07:42,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:42 WrapperNode [2019-10-15 01:07:42,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:07:42,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:07:42,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:07:42,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:07:42,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:42" (1/1) ... [2019-10-15 01:07:42,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:42" (1/1) ... [2019-10-15 01:07:42,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:42" (1/1) ... [2019-10-15 01:07:42,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:42" (1/1) ... [2019-10-15 01:07:43,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:42" (1/1) ... [2019-10-15 01:07:43,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:42" (1/1) ... [2019-10-15 01:07:43,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:42" (1/1) ... [2019-10-15 01:07:43,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:07:43,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:07:43,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:07:43,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:07:43,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:42" (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 01:07:43,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:07:43,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:07:43,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:07:43,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:07:43,156 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:07:43,156 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:07:43,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-15 01:07:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-15 01:07:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:07:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:07:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:07:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:07:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:07:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:07:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:07:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:07:43,159 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:07:43,159 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:07:43,159 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:07:43,161 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:07:43,161 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:07:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:07:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:07:43,163 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:07:43,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:07:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:07:43,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:07:43,165 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:07:43,165 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:07:43,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:07:43,165 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:07:43,166 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:07:43,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:07:43,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:07:43,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:07:43,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:07:43,166 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:07:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:07:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:07:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:07:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:07:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:07:43,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:07:43,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:07:43,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:07:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:07:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:07:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:07:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:07:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:07:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:07:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:07:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 01:07:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:07:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:07:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:07:43,171 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:07:43,171 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:07:43,171 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:07:43,172 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:07:43,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:07:43,172 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:07:43,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:07:43,173 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:07:43,173 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:07:43,173 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:07:43,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:07:43,173 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:07:43,173 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:07:43,174 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:07:43,174 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:07:43,174 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:07:43,174 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:07:43,175 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 01:07:43,175 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:07:43,176 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 01:07:43,176 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:07:43,176 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:07:43,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:07:43,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:07:43,177 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:07:43,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:07:43,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:07:43,178 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:07:43,179 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:07:43,179 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:07:43,179 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:07:43,180 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:07:43,180 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:07:43,181 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:07:43,181 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:07:43,181 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:07:43,181 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:07:43,181 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:07:43,181 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-15 01:07:43,182 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:07:43,182 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-15 01:07:43,182 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:07:43,182 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:07:43,182 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:07:43,183 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:07:43,183 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:07:43,183 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:07:43,183 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:07:43,183 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:07:43,183 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:07:43,184 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:07:43,184 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:07:43,185 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:07:43,185 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:07:43,185 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:07:43,186 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:07:43,186 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:07:43,186 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:07:43,186 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:07:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:07:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:07:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:07:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:07:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:07:43,188 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:07:43,188 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:07:43,188 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:07:43,188 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:07:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:07:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:07:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:07:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:07:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:07:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:07:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:07:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:07:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:07:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:07:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:07:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:07:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:07:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:07:43,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:07:43,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:07:43,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:07:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:07:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:07:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:07:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:07:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:07:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:07:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:07:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:07:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:07:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:07:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:07:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:07:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:07:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:07:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:07:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:07:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:07:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 01:07:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:07:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:07:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:07:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:07:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:07:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:07:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:07:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:07:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:07:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:07:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:07:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:07:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:07:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 01:07:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 01:07:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:07:43,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:07:43,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:07:45,497 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:07:45,498 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:07:45,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:07:45 BoogieIcfgContainer [2019-10-15 01:07:45,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:07:45,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:07:45,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:07:45,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:07:45,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:07:41" (1/3) ... [2019-10-15 01:07:45,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106636b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:07:45, skipping insertion in model container [2019-10-15 01:07:45,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:42" (2/3) ... [2019-10-15 01:07:45,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106636b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:07:45, skipping insertion in model container [2019-10-15 01:07:45,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:07:45" (3/3) ... [2019-10-15 01:07:45,512 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product32.cil.c [2019-10-15 01:07:45,523 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:07:45,538 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:07:45,551 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:07:45,607 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:07:45,607 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:07:45,608 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:07:45,608 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:07:45,608 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:07:45,608 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:07:45,608 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:07:45,608 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:07:45,661 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states. [2019-10-15 01:07:45,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 01:07:45,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:45,696 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:45,700 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:45,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:45,707 INFO L82 PathProgramCache]: Analyzing trace with hash -2027146740, now seen corresponding path program 1 times [2019-10-15 01:07:45,720 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:45,720 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756844259] [2019-10-15 01:07:45,721 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:45,721 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:45,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:46,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756844259] [2019-10-15 01:07:46,535 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340443813] [2019-10-15 01:07:46,535 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 01:07:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:47,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 2890 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-15 01:07:47,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:07:47,319 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:47,440 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:47,441 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:47,441 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 2] total 7 [2019-10-15 01:07:47,441 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323434073] [2019-10-15 01:07:47,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:07:47,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:47,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:07:47,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:47,468 INFO L87 Difference]: Start difference. First operand 851 states. Second operand 2 states. [2019-10-15 01:07:47,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:47,601 INFO L93 Difference]: Finished difference Result 1381 states and 2213 transitions. [2019-10-15 01:07:47,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:07:47,604 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 113 [2019-10-15 01:07:47,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:47,641 INFO L225 Difference]: With dead ends: 1381 [2019-10-15 01:07:47,641 INFO L226 Difference]: Without dead ends: 698 [2019-10-15 01:07:47,654 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:47,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2019-10-15 01:07:47,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2019-10-15 01:07:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2019-10-15 01:07:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1098 transitions. [2019-10-15 01:07:47,789 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1098 transitions. Word has length 113 [2019-10-15 01:07:47,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:47,791 INFO L462 AbstractCegarLoop]: Abstraction has 698 states and 1098 transitions. [2019-10-15 01:07:47,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:07:47,791 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1098 transitions. [2019-10-15 01:07:47,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 01:07:47,795 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:47,795 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:48,003 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:48,004 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:48,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:48,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1220182100, now seen corresponding path program 1 times [2019-10-15 01:07:48,005 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:48,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308840649] [2019-10-15 01:07:48,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:48,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:48,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:48,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308840649] [2019-10-15 01:07:48,233 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896004353] [2019-10-15 01:07:48,233 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 01:07:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:48,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:48,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:07:48,883 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:49,041 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:49,041 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 01:07:49,041 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130511460] [2019-10-15 01:07:49,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:07:49,043 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:49,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:07:49,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:07:49,044 INFO L87 Difference]: Start difference. First operand 698 states and 1098 transitions. Second operand 4 states. [2019-10-15 01:07:49,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:49,231 INFO L93 Difference]: Finished difference Result 1379 states and 2186 transitions. [2019-10-15 01:07:49,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:49,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-10-15 01:07:49,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:49,241 INFO L225 Difference]: With dead ends: 1379 [2019-10-15 01:07:49,242 INFO L226 Difference]: Without dead ends: 707 [2019-10-15 01:07:49,247 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:07:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2019-10-15 01:07:49,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2019-10-15 01:07:49,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-10-15 01:07:49,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1112 transitions. [2019-10-15 01:07:49,292 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1112 transitions. Word has length 113 [2019-10-15 01:07:49,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:49,292 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1112 transitions. [2019-10-15 01:07:49,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:07:49,293 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1112 transitions. [2019-10-15 01:07:49,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-15 01:07:49,295 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:49,296 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:49,502 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:49,507 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:49,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1088965156, now seen corresponding path program 1 times [2019-10-15 01:07:49,508 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:49,508 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812221903] [2019-10-15 01:07:49,508 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:49,508 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:49,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:07:49,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812221903] [2019-10-15 01:07:49,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155205419] [2019-10-15 01:07:49,761 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 01:07:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:50,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:50,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:07:50,285 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:07:50,431 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:50,431 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 01:07:50,431 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772665154] [2019-10-15 01:07:50,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:07:50,432 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:50,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:07:50,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:07:50,433 INFO L87 Difference]: Start difference. First operand 707 states and 1112 transitions. Second operand 4 states. [2019-10-15 01:07:50,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:50,783 INFO L93 Difference]: Finished difference Result 1425 states and 2271 transitions. [2019-10-15 01:07:50,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:50,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2019-10-15 01:07:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:50,796 INFO L225 Difference]: With dead ends: 1425 [2019-10-15 01:07:50,796 INFO L226 Difference]: Without dead ends: 746 [2019-10-15 01:07:50,801 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:07:50,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2019-10-15 01:07:50,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2019-10-15 01:07:50,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-10-15 01:07:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1186 transitions. [2019-10-15 01:07:50,847 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1186 transitions. Word has length 115 [2019-10-15 01:07:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:50,849 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 1186 transitions. [2019-10-15 01:07:50,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:07:50,849 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1186 transitions. [2019-10-15 01:07:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 01:07:50,852 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:50,852 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:51,067 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:51,068 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:51,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:51,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1537184166, now seen corresponding path program 1 times [2019-10-15 01:07:51,069 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:51,069 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707790123] [2019-10-15 01:07:51,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:51,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:51,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:07:51,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707790123] [2019-10-15 01:07:51,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004416188] [2019-10-15 01:07:51,206 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 01:07:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:51,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:07:51,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:07:51,921 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:07:52,175 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:52,175 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:07:52,176 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456926754] [2019-10-15 01:07:52,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:07:52,177 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:52,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:07:52,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:07:52,178 INFO L87 Difference]: Start difference. First operand 746 states and 1186 transitions. Second operand 7 states. [2019-10-15 01:07:52,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:52,346 INFO L93 Difference]: Finished difference Result 1478 states and 2362 transitions. [2019-10-15 01:07:52,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:07:52,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2019-10-15 01:07:52,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:52,363 INFO L225 Difference]: With dead ends: 1478 [2019-10-15 01:07:52,363 INFO L226 Difference]: Without dead ends: 760 [2019-10-15 01:07:52,369 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:07:52,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2019-10-15 01:07:52,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 753. [2019-10-15 01:07:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-10-15 01:07:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1197 transitions. [2019-10-15 01:07:52,405 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1197 transitions. Word has length 117 [2019-10-15 01:07:52,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:52,406 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 1197 transitions. [2019-10-15 01:07:52,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:07:52,406 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1197 transitions. [2019-10-15 01:07:52,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 01:07:52,408 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:52,409 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:52,617 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:52,618 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:52,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:52,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1752638134, now seen corresponding path program 1 times [2019-10-15 01:07:52,619 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:52,620 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333274563] [2019-10-15 01:07:52,620 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:52,620 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:52,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:52,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333274563] [2019-10-15 01:07:52,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938042691] [2019-10-15 01:07:52,745 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 01:07:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:53,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:53,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:53,313 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:53,314 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:53,491 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:53,491 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 01:07:53,492 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120219601] [2019-10-15 01:07:53,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:07:53,493 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:53,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:07:53,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:53,493 INFO L87 Difference]: Start difference. First operand 753 states and 1197 transitions. Second operand 4 states. [2019-10-15 01:07:53,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:53,593 INFO L93 Difference]: Finished difference Result 1491 states and 2382 transitions. [2019-10-15 01:07:53,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:53,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-15 01:07:53,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:53,600 INFO L225 Difference]: With dead ends: 1491 [2019-10-15 01:07:53,600 INFO L226 Difference]: Without dead ends: 764 [2019-10-15 01:07:53,605 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:07:53,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2019-10-15 01:07:53,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 762. [2019-10-15 01:07:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2019-10-15 01:07:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1205 transitions. [2019-10-15 01:07:53,639 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1205 transitions. Word has length 118 [2019-10-15 01:07:53,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:53,639 INFO L462 AbstractCegarLoop]: Abstraction has 762 states and 1205 transitions. [2019-10-15 01:07:53,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:07:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1205 transitions. [2019-10-15 01:07:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 01:07:53,644 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:53,645 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:53,852 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:53,853 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:53,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:53,853 INFO L82 PathProgramCache]: Analyzing trace with hash 718255648, now seen corresponding path program 1 times [2019-10-15 01:07:53,853 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:53,853 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656350487] [2019-10-15 01:07:53,854 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:53,854 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:53,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:07:53,982 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656350487] [2019-10-15 01:07:53,982 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363729900] [2019-10-15 01:07:53,983 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 01:07:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:54,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:07:54,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:07:54,543 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:07:54,821 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:54,821 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:07:54,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907767211] [2019-10-15 01:07:54,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:07:54,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:54,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:07:54,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:07:54,823 INFO L87 Difference]: Start difference. First operand 762 states and 1205 transitions. Second operand 7 states. [2019-10-15 01:07:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:54,980 INFO L93 Difference]: Finished difference Result 1495 states and 2376 transitions. [2019-10-15 01:07:54,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:07:54,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-10-15 01:07:54,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:54,993 INFO L225 Difference]: With dead ends: 1495 [2019-10-15 01:07:54,994 INFO L226 Difference]: Without dead ends: 774 [2019-10-15 01:07:55,001 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 226 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:07:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2019-10-15 01:07:55,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 762. [2019-10-15 01:07:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2019-10-15 01:07:55,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1205 transitions. [2019-10-15 01:07:55,040 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1205 transitions. Word has length 118 [2019-10-15 01:07:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:55,040 INFO L462 AbstractCegarLoop]: Abstraction has 762 states and 1205 transitions. [2019-10-15 01:07:55,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:07:55,040 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1205 transitions. [2019-10-15 01:07:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 01:07:55,044 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:55,044 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:55,260 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:55,261 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:55,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:55,261 INFO L82 PathProgramCache]: Analyzing trace with hash -64052637, now seen corresponding path program 1 times [2019-10-15 01:07:55,262 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:55,262 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038121811] [2019-10-15 01:07:55,262 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:55,262 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:55,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:55,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038121811] [2019-10-15 01:07:55,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390342527] [2019-10-15 01:07:55,391 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 01:07:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:55,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:55,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:07:55,962 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:56,073 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:56,073 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2019-10-15 01:07:56,074 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241963507] [2019-10-15 01:07:56,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:07:56,075 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:56,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:07:56,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:56,076 INFO L87 Difference]: Start difference. First operand 762 states and 1205 transitions. Second operand 5 states. [2019-10-15 01:07:56,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:56,165 INFO L93 Difference]: Finished difference Result 1471 states and 2343 transitions. [2019-10-15 01:07:56,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:56,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2019-10-15 01:07:56,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:56,173 INFO L225 Difference]: With dead ends: 1471 [2019-10-15 01:07:56,173 INFO L226 Difference]: Without dead ends: 762 [2019-10-15 01:07:56,178 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:07:56,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2019-10-15 01:07:56,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2019-10-15 01:07:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2019-10-15 01:07:56,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1200 transitions. [2019-10-15 01:07:56,215 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1200 transitions. Word has length 121 [2019-10-15 01:07:56,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:56,216 INFO L462 AbstractCegarLoop]: Abstraction has 762 states and 1200 transitions. [2019-10-15 01:07:56,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:07:56,216 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1200 transitions. [2019-10-15 01:07:56,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-15 01:07:56,218 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:56,218 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:56,428 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:56,429 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:56,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:56,429 INFO L82 PathProgramCache]: Analyzing trace with hash 78569715, now seen corresponding path program 1 times [2019-10-15 01:07:56,430 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:56,430 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174862033] [2019-10-15 01:07:56,430 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:56,431 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:56,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:56,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174862033] [2019-10-15 01:07:56,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173304553] [2019-10-15 01:07:56,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:07:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:57,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:57,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:57,227 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:57,228 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:57,360 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:57,360 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2019-10-15 01:07:57,360 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808665711] [2019-10-15 01:07:57,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:07:57,361 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:57,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:07:57,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:57,362 INFO L87 Difference]: Start difference. First operand 762 states and 1200 transitions. Second operand 5 states. [2019-10-15 01:07:57,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:57,577 INFO L93 Difference]: Finished difference Result 1467 states and 2334 transitions. [2019-10-15 01:07:57,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:57,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2019-10-15 01:07:57,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:57,585 INFO L225 Difference]: With dead ends: 1467 [2019-10-15 01:07:57,585 INFO L226 Difference]: Without dead ends: 804 [2019-10-15 01:07:57,589 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:07:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2019-10-15 01:07:57,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 801. [2019-10-15 01:07:57,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2019-10-15 01:07:57,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1273 transitions. [2019-10-15 01:07:57,619 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1273 transitions. Word has length 122 [2019-10-15 01:07:57,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:57,620 INFO L462 AbstractCegarLoop]: Abstraction has 801 states and 1273 transitions. [2019-10-15 01:07:57,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:07:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1273 transitions. [2019-10-15 01:07:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-15 01:07:57,622 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:57,623 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:57,831 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:57,832 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:57,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:57,832 INFO L82 PathProgramCache]: Analyzing trace with hash -81320279, now seen corresponding path program 1 times [2019-10-15 01:07:57,832 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:57,832 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666168410] [2019-10-15 01:07:57,832 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:57,833 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:57,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:57,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666168410] [2019-10-15 01:07:57,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58083512] [2019-10-15 01:07:57,953 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 01:07:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:58,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:07:58,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:07:58,809 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:07:59,077 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:59,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [4] total 13 [2019-10-15 01:07:59,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748317590] [2019-10-15 01:07:59,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:07:59,078 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:59,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:07:59,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:07:59,079 INFO L87 Difference]: Start difference. First operand 801 states and 1273 transitions. Second operand 11 states. [2019-10-15 01:07:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:59,268 INFO L93 Difference]: Finished difference Result 1487 states and 2358 transitions. [2019-10-15 01:07:59,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:07:59,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 123 [2019-10-15 01:07:59,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:59,277 INFO L225 Difference]: With dead ends: 1487 [2019-10-15 01:07:59,277 INFO L226 Difference]: Without dead ends: 824 [2019-10-15 01:07:59,281 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 237 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:07:59,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2019-10-15 01:07:59,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 808. [2019-10-15 01:07:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-10-15 01:07:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1282 transitions. [2019-10-15 01:07:59,314 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1282 transitions. Word has length 123 [2019-10-15 01:07:59,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:59,316 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1282 transitions. [2019-10-15 01:07:59,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:07:59,316 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1282 transitions. [2019-10-15 01:07:59,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 01:07:59,318 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:59,319 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:59,528 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:59,528 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:59,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:59,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2017871917, now seen corresponding path program 1 times [2019-10-15 01:07:59,529 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:59,529 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903580351] [2019-10-15 01:07:59,529 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:59,530 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:59,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:59,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903580351] [2019-10-15 01:07:59,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725778460] [2019-10-15 01:07:59,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:00,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 2895 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:00,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:08:00,191 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:08:00,312 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:00,312 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 8 [2019-10-15 01:08:00,312 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572042750] [2019-10-15 01:08:00,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:00,313 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:00,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:00,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:00,314 INFO L87 Difference]: Start difference. First operand 808 states and 1282 transitions. Second operand 6 states. [2019-10-15 01:08:00,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:00,410 INFO L93 Difference]: Finished difference Result 1529 states and 2433 transitions. [2019-10-15 01:08:00,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:00,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2019-10-15 01:08:00,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:00,417 INFO L225 Difference]: With dead ends: 1529 [2019-10-15 01:08:00,418 INFO L226 Difference]: Without dead ends: 808 [2019-10-15 01:08:00,422 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:08:00,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2019-10-15 01:08:00,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2019-10-15 01:08:00,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-10-15 01:08:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1279 transitions. [2019-10-15 01:08:00,453 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1279 transitions. Word has length 125 [2019-10-15 01:08:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:00,453 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1279 transitions. [2019-10-15 01:08:00,453 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1279 transitions. [2019-10-15 01:08:00,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 01:08:00,456 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:00,457 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:00,674 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:00,674 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:00,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:00,675 INFO L82 PathProgramCache]: Analyzing trace with hash 875190530, now seen corresponding path program 1 times [2019-10-15 01:08:00,675 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:00,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622238454] [2019-10-15 01:08:00,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:00,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:00,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:08:00,821 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622238454] [2019-10-15 01:08:00,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831651793] [2019-10-15 01:08:00,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:01,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 2895 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 01:08:01,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:08:01,585 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:08:01,715 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:01,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-10-15 01:08:01,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672394966] [2019-10-15 01:08:01,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:01,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:01,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:01,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:01,717 INFO L87 Difference]: Start difference. First operand 808 states and 1279 transitions. Second operand 4 states. [2019-10-15 01:08:02,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:02,906 INFO L93 Difference]: Finished difference Result 2747 states and 4407 transitions. [2019-10-15 01:08:02,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:02,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-15 01:08:02,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:02,924 INFO L225 Difference]: With dead ends: 2747 [2019-10-15 01:08:02,925 INFO L226 Difference]: Without dead ends: 2088 [2019-10-15 01:08:02,930 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 246 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:02,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2019-10-15 01:08:03,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1942. [2019-10-15 01:08:03,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1942 states. [2019-10-15 01:08:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3119 transitions. [2019-10-15 01:08:03,012 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3119 transitions. Word has length 126 [2019-10-15 01:08:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:03,013 INFO L462 AbstractCegarLoop]: Abstraction has 1942 states and 3119 transitions. [2019-10-15 01:08:03,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3119 transitions. [2019-10-15 01:08:03,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-15 01:08:03,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:03,020 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:03,227 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:03,228 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:03,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:03,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1193387823, now seen corresponding path program 1 times [2019-10-15 01:08:03,229 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:03,229 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158895700] [2019-10-15 01:08:03,229 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:03,230 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:03,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:03,351 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:08:03,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158895700] [2019-10-15 01:08:03,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924554462] [2019-10-15 01:08:03,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:04,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-15 01:08:04,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:04,103 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:08:04,339 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:04,339 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [4] total 9 [2019-10-15 01:08:04,339 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847204855] [2019-10-15 01:08:04,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:08:04,341 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:04,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:08:04,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:08:04,342 INFO L87 Difference]: Start difference. First operand 1942 states and 3119 transitions. Second operand 7 states. [2019-10-15 01:08:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:05,164 INFO L93 Difference]: Finished difference Result 4385 states and 7048 transitions. [2019-10-15 01:08:05,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:08:05,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2019-10-15 01:08:05,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:05,184 INFO L225 Difference]: With dead ends: 4385 [2019-10-15 01:08:05,184 INFO L226 Difference]: Without dead ends: 2592 [2019-10-15 01:08:05,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 355 SyntacticMatches, 9 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:05,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2019-10-15 01:08:05,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2588. [2019-10-15 01:08:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2588 states. [2019-10-15 01:08:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 4133 transitions. [2019-10-15 01:08:05,308 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 4133 transitions. Word has length 184 [2019-10-15 01:08:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:05,309 INFO L462 AbstractCegarLoop]: Abstraction has 2588 states and 4133 transitions. [2019-10-15 01:08:05,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:08:05,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 4133 transitions. [2019-10-15 01:08:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-15 01:08:05,317 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:05,317 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:05,521 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:05,522 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:05,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:05,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1637447604, now seen corresponding path program 1 times [2019-10-15 01:08:05,523 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:05,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604601302] [2019-10-15 01:08:05,524 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:05,524 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:05,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:08:05,647 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604601302] [2019-10-15 01:08:05,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22928755] [2019-10-15 01:08:05,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:06,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:06,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:08:06,456 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:06,963 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:06,963 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 11 [2019-10-15 01:08:06,963 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544572064] [2019-10-15 01:08:06,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:06,964 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:06,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:06,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:06,966 INFO L87 Difference]: Start difference. First operand 2588 states and 4133 transitions. Second operand 5 states. [2019-10-15 01:08:08,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:08,207 INFO L93 Difference]: Finished difference Result 5067 states and 8284 transitions. [2019-10-15 01:08:08,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:08,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2019-10-15 01:08:08,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:08,228 INFO L225 Difference]: With dead ends: 5067 [2019-10-15 01:08:08,228 INFO L226 Difference]: Without dead ends: 2628 [2019-10-15 01:08:08,243 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 359 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:08:08,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2019-10-15 01:08:08,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 2628. [2019-10-15 01:08:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2628 states. [2019-10-15 01:08:08,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 4197 transitions. [2019-10-15 01:08:08,351 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 4197 transitions. Word has length 185 [2019-10-15 01:08:08,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:08,352 INFO L462 AbstractCegarLoop]: Abstraction has 2628 states and 4197 transitions. [2019-10-15 01:08:08,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:08,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 4197 transitions. [2019-10-15 01:08:08,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-15 01:08:08,360 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:08,360 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:08,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:08,568 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:08,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:08,568 INFO L82 PathProgramCache]: Analyzing trace with hash -387871118, now seen corresponding path program 1 times [2019-10-15 01:08:08,568 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:08,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365384211] [2019-10-15 01:08:08,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:08,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:08,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:08,679 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365384211] [2019-10-15 01:08:08,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778772981] [2019-10-15 01:08:08,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:09,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 3269 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:09,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:08:09,613 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:09,990 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:09,990 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:09,990 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 11 [2019-10-15 01:08:09,991 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326274541] [2019-10-15 01:08:09,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:09,991 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:09,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:09,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:09,992 INFO L87 Difference]: Start difference. First operand 2628 states and 4197 transitions. Second operand 5 states. [2019-10-15 01:08:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:10,942 INFO L93 Difference]: Finished difference Result 5147 states and 8399 transitions. [2019-10-15 01:08:10,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:10,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2019-10-15 01:08:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:10,961 INFO L225 Difference]: With dead ends: 5147 [2019-10-15 01:08:10,961 INFO L226 Difference]: Without dead ends: 2668 [2019-10-15 01:08:10,973 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 363 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:08:10,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2019-10-15 01:08:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2668. [2019-10-15 01:08:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2668 states. [2019-10-15 01:08:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4261 transitions. [2019-10-15 01:08:11,078 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4261 transitions. Word has length 187 [2019-10-15 01:08:11,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:11,081 INFO L462 AbstractCegarLoop]: Abstraction has 2668 states and 4261 transitions. [2019-10-15 01:08:11,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:11,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4261 transitions. [2019-10-15 01:08:11,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 01:08:11,093 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:11,093 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:11,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:11,301 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:11,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:11,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1392276364, now seen corresponding path program 1 times [2019-10-15 01:08:11,302 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:11,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470203110] [2019-10-15 01:08:11,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:11,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:11,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:11,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470203110] [2019-10-15 01:08:11,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426112326] [2019-10-15 01:08:11,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:12,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 3271 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:12,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:08:12,174 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:12,631 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:12,631 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 11 [2019-10-15 01:08:12,631 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908766523] [2019-10-15 01:08:12,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:12,632 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:12,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:12,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:12,633 INFO L87 Difference]: Start difference. First operand 2668 states and 4261 transitions. Second operand 5 states. [2019-10-15 01:08:13,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:13,790 INFO L93 Difference]: Finished difference Result 5227 states and 8514 transitions. [2019-10-15 01:08:13,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:13,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2019-10-15 01:08:13,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:13,810 INFO L225 Difference]: With dead ends: 5227 [2019-10-15 01:08:13,811 INFO L226 Difference]: Without dead ends: 2708 [2019-10-15 01:08:13,831 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 367 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:08:13,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2019-10-15 01:08:13,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2708. [2019-10-15 01:08:13,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2708 states. [2019-10-15 01:08:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 4325 transitions. [2019-10-15 01:08:13,934 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 4325 transitions. Word has length 189 [2019-10-15 01:08:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:13,936 INFO L462 AbstractCegarLoop]: Abstraction has 2708 states and 4325 transitions. [2019-10-15 01:08:13,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:13,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 4325 transitions. [2019-10-15 01:08:13,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-15 01:08:13,946 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:13,946 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:14,156 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:14,156 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:14,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:14,157 INFO L82 PathProgramCache]: Analyzing trace with hash 635456810, now seen corresponding path program 1 times [2019-10-15 01:08:14,157 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:14,157 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32594661] [2019-10-15 01:08:14,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:14,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:14,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:14,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32594661] [2019-10-15 01:08:14,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169865121] [2019-10-15 01:08:14,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true