java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:11:35,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:11:35,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:11:35,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:11:35,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:11:35,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:11:35,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:11:35,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:11:35,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:11:35,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:11:35,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:11:35,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:11:35,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:11:35,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:11:35,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:11:35,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:11:35,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:11:35,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:11:35,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:11:35,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:11:35,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:11:35,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:11:35,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:11:35,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:11:35,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:11:35,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:11:35,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:11:35,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:11:35,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:11:35,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:11:35,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:11:35,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:11:35,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:11:35,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:11:35,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:11:35,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:11:35,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:11:35,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:11:35,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:11:35,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:11:35,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:11:35,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:11:35,477 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:11:35,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:11:35,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:11:35,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:11:35,480 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:11:35,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:11:35,480 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:11:35,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:11:35,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:11:35,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:11:35,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:11:35,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:11:35,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:11:35,483 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:11:35,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:11:35,483 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:11:35,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:11:35,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:11:35,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:11:35,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:11:35,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:11:35,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:11:35,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:11:35,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:11:35,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:11:35,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:11:35,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:11:35,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:11:35,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:11:35,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:11:35,769 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:11:35,773 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:11:35,774 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:11:35,775 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:11:35,776 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c [2019-10-13 21:11:35,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/624915d18/2990fe4d52764bc59e21716395b2274a/FLAG050af0f82 [2019-10-13 21:11:36,491 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:11:36,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c [2019-10-13 21:11:36,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/624915d18/2990fe4d52764bc59e21716395b2274a/FLAG050af0f82 [2019-10-13 21:11:36,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/624915d18/2990fe4d52764bc59e21716395b2274a [2019-10-13 21:11:36,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:11:36,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:11:36,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:11:36,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:11:36,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:11:36,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:11:36" (1/1) ... [2019-10-13 21:11:36,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@279e49b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:36, skipping insertion in model container [2019-10-13 21:11:36,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:11:36" (1/1) ... [2019-10-13 21:11:36,743 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:11:36,831 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:11:37,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:11:37,554 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:11:37,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:11:37,799 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:11:37,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:37 WrapperNode [2019-10-13 21:11:37,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:11:37,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:11:37,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:11:37,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:11:37,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:37" (1/1) ... [2019-10-13 21:11:37,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:37" (1/1) ... [2019-10-13 21:11:37,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:37" (1/1) ... [2019-10-13 21:11:37,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:37" (1/1) ... [2019-10-13 21:11:37,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:37" (1/1) ... [2019-10-13 21:11:37,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:37" (1/1) ... [2019-10-13 21:11:37,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:37" (1/1) ... [2019-10-13 21:11:37,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:11:37,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:11:37,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:11:37,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:11:37,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:11:38,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:11:38,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:11:38,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:38,087 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:11:38,087 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:11:38,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:11:38,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:38,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:38,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:38,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:11:38,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:11:38,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:11:38,090 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:11:38,091 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:11:38,091 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:11:38,091 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:11:38,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:11:38,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:11:38,094 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:11:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:11:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:11:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:11:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:11:38,096 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:11:38,096 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:11:38,097 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:11:38,097 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:11:38,097 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:11:38,097 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:11:38,098 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:11:38,098 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:11:38,098 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:11:38,098 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:11:38,098 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:11:38,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:11:38,099 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:11:38,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:11:38,099 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:11:38,100 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:11:38,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:11:38,100 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:11:38,100 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:11:38,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:11:38,100 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:11:38,101 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:11:38,101 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:11:38,101 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:11:38,101 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:11:38,101 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:11:38,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:11:38,102 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 21:11:38,102 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:11:38,102 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:11:38,102 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:11:38,103 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:11:38,103 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:11:38,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:11:38,103 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:11:38,103 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:11:38,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:11:38,104 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:11:38,104 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:11:38,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:11:38,105 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 21:11:38,105 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:11:38,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:11:38,106 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:11:38,106 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 21:11:38,106 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:38,106 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:11:38,106 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:11:38,106 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-13 21:11:38,107 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:11:38,108 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-13 21:11:38,108 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:11:38,108 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:11:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:11:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:11:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:11:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:11:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:11:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:11:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:11:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:11:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:11:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:11:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:11:38,113 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:11:38,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:11:38,114 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:11:38,114 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:11:38,114 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:38,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:11:38,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:11:38,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:11:38,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:11:38,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:38,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:11:38,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:38,116 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:38,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:11:38,116 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:11:38,116 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:11:38,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:11:38,117 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:11:38,117 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:11:38,117 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:11:38,117 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:11:38,117 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:11:38,117 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:11:38,118 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:11:38,118 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:11:38,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:11:38,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:11:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:11:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:11:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:11:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:11:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:11:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:11:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:11:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:11:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:11:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:11:38,123 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:11:38,123 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:11:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:11:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:11:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:11:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:11:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:11:38,125 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:11:38,125 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:11:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:11:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:11:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:11:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:11:38,130 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:11:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:11:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:11:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:11:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:11:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:11:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:11:38,140 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:11:38,140 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:11:38,140 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:11:38,140 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:11:38,141 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 21:11:38,141 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:11:38,141 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:11:38,141 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:11:38,141 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:11:38,142 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:11:38,142 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 21:11:38,142 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:11:38,142 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:11:38,143 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 21:11:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:11:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:11:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-13 21:11:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-13 21:11:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:11:38,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:11:38,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:11:38,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:11:40,597 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:11:40,598 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:11:40,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:40 BoogieIcfgContainer [2019-10-13 21:11:40,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:11:40,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:11:40,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:11:40,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:11:40,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:11:36" (1/3) ... [2019-10-13 21:11:40,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6a21e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:40, skipping insertion in model container [2019-10-13 21:11:40,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:37" (2/3) ... [2019-10-13 21:11:40,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6a21e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:40, skipping insertion in model container [2019-10-13 21:11:40,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:40" (3/3) ... [2019-10-13 21:11:40,609 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product22.cil.c [2019-10-13 21:11:40,620 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:11:40,630 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:11:40,643 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:11:40,678 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:11:40,679 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:11:40,679 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:11:40,679 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:11:40,679 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:11:40,679 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:11:40,679 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:11:40,680 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:11:40,716 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states. [2019-10-13 21:11:40,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 21:11:40,730 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:40,732 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:40,734 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:40,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:40,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1780237072, now seen corresponding path program 1 times [2019-10-13 21:11:40,751 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:40,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90170690] [2019-10-13 21:11:40,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:40,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:40,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:41,524 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90170690] [2019-10-13 21:11:41,525 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:41,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:41,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247261776] [2019-10-13 21:11:41,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:41,535 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:41,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:41,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:41,554 INFO L87 Difference]: Start difference. First operand 812 states. Second operand 7 states. [2019-10-13 21:11:41,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:41,865 INFO L93 Difference]: Finished difference Result 1289 states and 2078 transitions. [2019-10-13 21:11:41,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:41,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-10-13 21:11:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:41,904 INFO L225 Difference]: With dead ends: 1289 [2019-10-13 21:11:41,904 INFO L226 Difference]: Without dead ends: 653 [2019-10-13 21:11:41,918 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2019-10-13 21:11:42,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 651. [2019-10-13 21:11:42,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-13 21:11:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1034 transitions. [2019-10-13 21:11:42,053 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1034 transitions. Word has length 93 [2019-10-13 21:11:42,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:42,054 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1034 transitions. [2019-10-13 21:11:42,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:42,054 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1034 transitions. [2019-10-13 21:11:42,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:11:42,061 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:42,061 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:42,062 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:42,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:42,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1958663701, now seen corresponding path program 1 times [2019-10-13 21:11:42,062 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:42,063 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653821657] [2019-10-13 21:11:42,063 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:42,063 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:42,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:42,263 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653821657] [2019-10-13 21:11:42,263 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:42,263 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:42,263 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514426200] [2019-10-13 21:11:42,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:42,265 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:42,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:42,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:42,266 INFO L87 Difference]: Start difference. First operand 651 states and 1034 transitions. Second operand 4 states. [2019-10-13 21:11:42,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:42,407 INFO L93 Difference]: Finished difference Result 1268 states and 2033 transitions. [2019-10-13 21:11:42,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:42,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-13 21:11:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:42,418 INFO L225 Difference]: With dead ends: 1268 [2019-10-13 21:11:42,418 INFO L226 Difference]: Without dead ends: 633 [2019-10-13 21:11:42,430 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:42,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-13 21:11:42,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2019-10-13 21:11:42,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-10-13 21:11:42,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1001 transitions. [2019-10-13 21:11:42,495 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1001 transitions. Word has length 94 [2019-10-13 21:11:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:42,497 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 1001 transitions. [2019-10-13 21:11:42,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:42,498 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1001 transitions. [2019-10-13 21:11:42,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:11:42,503 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:42,503 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:42,504 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:42,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:42,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1392133917, now seen corresponding path program 1 times [2019-10-13 21:11:42,504 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:42,505 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748520737] [2019-10-13 21:11:42,505 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:42,505 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:42,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:42,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748520737] [2019-10-13 21:11:42,710 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:42,710 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:42,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127718818] [2019-10-13 21:11:42,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:42,713 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:42,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:42,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:42,714 INFO L87 Difference]: Start difference. First operand 633 states and 1001 transitions. Second operand 7 states. [2019-10-13 21:11:42,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:42,818 INFO L93 Difference]: Finished difference Result 1237 states and 1975 transitions. [2019-10-13 21:11:42,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:42,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-10-13 21:11:42,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:42,826 INFO L225 Difference]: With dead ends: 1237 [2019-10-13 21:11:42,826 INFO L226 Difference]: Without dead ends: 627 [2019-10-13 21:11:42,830 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:42,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2019-10-13 21:11:42,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2019-10-13 21:11:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2019-10-13 21:11:42,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 988 transitions. [2019-10-13 21:11:42,873 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 988 transitions. Word has length 94 [2019-10-13 21:11:42,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:42,875 INFO L462 AbstractCegarLoop]: Abstraction has 627 states and 988 transitions. [2019-10-13 21:11:42,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:42,875 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 988 transitions. [2019-10-13 21:11:42,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 21:11:42,878 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:42,878 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:42,878 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:42,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:42,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1203424844, now seen corresponding path program 1 times [2019-10-13 21:11:42,879 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:42,879 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202255572] [2019-10-13 21:11:42,879 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:42,880 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:42,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:43,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:43,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202255572] [2019-10-13 21:11:43,098 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:43,098 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:43,099 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440346182] [2019-10-13 21:11:43,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:43,099 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:43,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:43,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:43,101 INFO L87 Difference]: Start difference. First operand 627 states and 988 transitions. Second operand 7 states. [2019-10-13 21:11:43,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:43,201 INFO L93 Difference]: Finished difference Result 1225 states and 1949 transitions. [2019-10-13 21:11:43,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:43,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-13 21:11:43,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:43,208 INFO L225 Difference]: With dead ends: 1225 [2019-10-13 21:11:43,208 INFO L226 Difference]: Without dead ends: 621 [2019-10-13 21:11:43,212 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:43,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-13 21:11:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-13 21:11:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-13 21:11:43,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 975 transitions. [2019-10-13 21:11:43,249 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 975 transitions. Word has length 95 [2019-10-13 21:11:43,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:43,249 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 975 transitions. [2019-10-13 21:11:43,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:43,250 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 975 transitions. [2019-10-13 21:11:43,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:11:43,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:43,253 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:43,253 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:43,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:43,254 INFO L82 PathProgramCache]: Analyzing trace with hash 2078787873, now seen corresponding path program 1 times [2019-10-13 21:11:43,254 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:43,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382715791] [2019-10-13 21:11:43,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:43,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:43,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:43,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382715791] [2019-10-13 21:11:43,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:43,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:43,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926511911] [2019-10-13 21:11:43,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:43,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:43,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:43,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:43,490 INFO L87 Difference]: Start difference. First operand 621 states and 975 transitions. Second operand 7 states. [2019-10-13 21:11:43,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:43,587 INFO L93 Difference]: Finished difference Result 1213 states and 1923 transitions. [2019-10-13 21:11:43,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:43,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-13 21:11:43,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:43,593 INFO L225 Difference]: With dead ends: 1213 [2019-10-13 21:11:43,593 INFO L226 Difference]: Without dead ends: 615 [2019-10-13 21:11:43,597 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-13 21:11:43,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-10-13 21:11:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-13 21:11:43,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 962 transitions. [2019-10-13 21:11:43,621 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 962 transitions. Word has length 96 [2019-10-13 21:11:43,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:43,622 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 962 transitions. [2019-10-13 21:11:43,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:43,622 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 962 transitions. [2019-10-13 21:11:43,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:11:43,623 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:43,624 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:43,624 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:43,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:43,624 INFO L82 PathProgramCache]: Analyzing trace with hash -827237598, now seen corresponding path program 1 times [2019-10-13 21:11:43,625 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:43,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484956658] [2019-10-13 21:11:43,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:43,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:43,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:43,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484956658] [2019-10-13 21:11:43,847 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:43,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:43,848 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46738259] [2019-10-13 21:11:43,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:43,848 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:43,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:43,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:43,849 INFO L87 Difference]: Start difference. First operand 615 states and 962 transitions. Second operand 7 states. [2019-10-13 21:11:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:43,934 INFO L93 Difference]: Finished difference Result 1201 states and 1897 transitions. [2019-10-13 21:11:43,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:43,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-13 21:11:43,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:43,943 INFO L225 Difference]: With dead ends: 1201 [2019-10-13 21:11:43,943 INFO L226 Difference]: Without dead ends: 615 [2019-10-13 21:11:43,947 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:43,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-13 21:11:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-10-13 21:11:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-13 21:11:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 961 transitions. [2019-10-13 21:11:43,973 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 961 transitions. Word has length 96 [2019-10-13 21:11:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:43,973 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 961 transitions. [2019-10-13 21:11:43,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:43,974 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 961 transitions. [2019-10-13 21:11:43,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 21:11:43,977 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:43,977 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:43,978 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:43,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:43,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1406644616, now seen corresponding path program 1 times [2019-10-13 21:11:43,978 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:43,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558052222] [2019-10-13 21:11:43,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:43,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:43,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:44,190 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558052222] [2019-10-13 21:11:44,190 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:44,190 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:44,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8861573] [2019-10-13 21:11:44,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:44,191 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:44,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:44,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:44,192 INFO L87 Difference]: Start difference. First operand 615 states and 961 transitions. Second operand 5 states. [2019-10-13 21:11:44,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:44,342 INFO L93 Difference]: Finished difference Result 1200 states and 1894 transitions. [2019-10-13 21:11:44,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:44,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-13 21:11:44,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:44,351 INFO L225 Difference]: With dead ends: 1200 [2019-10-13 21:11:44,351 INFO L226 Difference]: Without dead ends: 615 [2019-10-13 21:11:44,356 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:44,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-13 21:11:44,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-10-13 21:11:44,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-13 21:11:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 960 transitions. [2019-10-13 21:11:44,389 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 960 transitions. Word has length 97 [2019-10-13 21:11:44,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:44,390 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 960 transitions. [2019-10-13 21:11:44,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 960 transitions. [2019-10-13 21:11:44,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 21:11:44,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:44,393 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:44,393 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:44,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:44,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1540636153, now seen corresponding path program 1 times [2019-10-13 21:11:44,394 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:44,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638193176] [2019-10-13 21:11:44,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:44,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:44,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:44,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638193176] [2019-10-13 21:11:44,568 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:44,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:44,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284911511] [2019-10-13 21:11:44,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:44,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:44,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:44,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:44,569 INFO L87 Difference]: Start difference. First operand 615 states and 960 transitions. Second operand 5 states. [2019-10-13 21:11:44,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:44,639 INFO L93 Difference]: Finished difference Result 1200 states and 1892 transitions. [2019-10-13 21:11:44,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:44,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-10-13 21:11:44,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:44,648 INFO L225 Difference]: With dead ends: 1200 [2019-10-13 21:11:44,648 INFO L226 Difference]: Without dead ends: 615 [2019-10-13 21:11:44,653 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:44,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-13 21:11:44,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-10-13 21:11:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-13 21:11:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 959 transitions. [2019-10-13 21:11:44,675 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 959 transitions. Word has length 98 [2019-10-13 21:11:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:44,676 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 959 transitions. [2019-10-13 21:11:44,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 959 transitions. [2019-10-13 21:11:44,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 21:11:44,678 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:44,681 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:44,682 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:44,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:44,682 INFO L82 PathProgramCache]: Analyzing trace with hash -846468685, now seen corresponding path program 1 times [2019-10-13 21:11:44,682 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:44,682 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333611206] [2019-10-13 21:11:44,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:44,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:44,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:44,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333611206] [2019-10-13 21:11:44,815 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:44,815 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:44,815 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309430352] [2019-10-13 21:11:44,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:44,816 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:44,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:44,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:44,817 INFO L87 Difference]: Start difference. First operand 615 states and 959 transitions. Second operand 5 states. [2019-10-13 21:11:44,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:44,902 INFO L93 Difference]: Finished difference Result 1200 states and 1890 transitions. [2019-10-13 21:11:44,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:44,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-10-13 21:11:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:44,911 INFO L225 Difference]: With dead ends: 1200 [2019-10-13 21:11:44,911 INFO L226 Difference]: Without dead ends: 615 [2019-10-13 21:11:44,916 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:44,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-13 21:11:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-10-13 21:11:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-13 21:11:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 958 transitions. [2019-10-13 21:11:44,946 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 958 transitions. Word has length 99 [2019-10-13 21:11:44,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:44,946 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 958 transitions. [2019-10-13 21:11:44,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:44,947 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 958 transitions. [2019-10-13 21:11:44,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 21:11:44,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:44,951 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:44,951 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:44,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:44,952 INFO L82 PathProgramCache]: Analyzing trace with hash -249175838, now seen corresponding path program 1 times [2019-10-13 21:11:44,952 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:44,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315164382] [2019-10-13 21:11:44,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:44,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:44,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:45,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315164382] [2019-10-13 21:11:45,093 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:45,093 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:45,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044257064] [2019-10-13 21:11:45,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:45,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:45,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:45,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:45,095 INFO L87 Difference]: Start difference. First operand 615 states and 958 transitions. Second operand 5 states. [2019-10-13 21:11:45,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:45,217 INFO L93 Difference]: Finished difference Result 1200 states and 1888 transitions. [2019-10-13 21:11:45,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:45,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-13 21:11:45,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:45,223 INFO L225 Difference]: With dead ends: 1200 [2019-10-13 21:11:45,223 INFO L226 Difference]: Without dead ends: 615 [2019-10-13 21:11:45,231 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-13 21:11:45,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-10-13 21:11:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-13 21:11:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 957 transitions. [2019-10-13 21:11:45,257 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 957 transitions. Word has length 100 [2019-10-13 21:11:45,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:45,258 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 957 transitions. [2019-10-13 21:11:45,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:45,259 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 957 transitions. [2019-10-13 21:11:45,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 21:11:45,261 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:45,262 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:45,262 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:45,263 INFO L82 PathProgramCache]: Analyzing trace with hash -715834196, now seen corresponding path program 1 times [2019-10-13 21:11:45,263 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:45,263 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345357628] [2019-10-13 21:11:45,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:45,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:45,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:45,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345357628] [2019-10-13 21:11:45,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:45,538 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:11:45,538 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240177044] [2019-10-13 21:11:45,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:11:45,539 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:45,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:11:45,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:11:45,540 INFO L87 Difference]: Start difference. First operand 615 states and 957 transitions. Second operand 9 states. [2019-10-13 21:11:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:45,721 INFO L93 Difference]: Finished difference Result 1202 states and 1887 transitions. [2019-10-13 21:11:45,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:11:45,722 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2019-10-13 21:11:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:45,728 INFO L225 Difference]: With dead ends: 1202 [2019-10-13 21:11:45,728 INFO L226 Difference]: Without dead ends: 615 [2019-10-13 21:11:45,734 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:11:45,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-13 21:11:45,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-10-13 21:11:45,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-13 21:11:45,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 956 transitions. [2019-10-13 21:11:45,769 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 956 transitions. Word has length 101 [2019-10-13 21:11:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:45,771 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 956 transitions. [2019-10-13 21:11:45,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:11:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 956 transitions. [2019-10-13 21:11:45,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 21:11:45,774 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:45,774 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:45,775 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:45,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:45,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1639971054, now seen corresponding path program 1 times [2019-10-13 21:11:45,776 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:45,776 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649013817] [2019-10-13 21:11:45,776 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:45,776 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:45,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:11:46,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649013817] [2019-10-13 21:11:46,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141393447] [2019-10-13 21:11:46,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:46,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:11:46,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:46,754 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:46,859 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:11:46,860 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:11:46,860 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004978438] [2019-10-13 21:11:46,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:11:46,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:46,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:11:46,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:46,862 INFO L87 Difference]: Start difference. First operand 615 states and 956 transitions. Second operand 3 states. [2019-10-13 21:11:46,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:46,956 INFO L93 Difference]: Finished difference Result 1724 states and 2728 transitions. [2019-10-13 21:11:46,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:11:46,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2019-10-13 21:11:46,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:46,968 INFO L225 Difference]: With dead ends: 1724 [2019-10-13 21:11:46,968 INFO L226 Difference]: Without dead ends: 1143 [2019-10-13 21:11:46,972 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:46,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2019-10-13 21:11:47,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1130. [2019-10-13 21:11:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2019-10-13 21:11:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1775 transitions. [2019-10-13 21:11:47,040 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1775 transitions. Word has length 101 [2019-10-13 21:11:47,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:47,042 INFO L462 AbstractCegarLoop]: Abstraction has 1130 states and 1775 transitions. [2019-10-13 21:11:47,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:11:47,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1775 transitions. [2019-10-13 21:11:47,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 21:11:47,044 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:47,044 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:47,263 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:47,264 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:47,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1592774854, now seen corresponding path program 1 times [2019-10-13 21:11:47,265 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:47,265 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626187114] [2019-10-13 21:11:47,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:47,266 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:47,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:47,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:11:47,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626187114] [2019-10-13 21:11:47,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938057697] [2019-10-13 21:11:47,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:48,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 2952 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:11:48,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:48,327 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:48,487 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:11:48,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:11:48,488 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001555200] [2019-10-13 21:11:48,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:11:48,490 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:48,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:11:48,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:48,491 INFO L87 Difference]: Start difference. First operand 1130 states and 1775 transitions. Second operand 3 states. [2019-10-13 21:11:48,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:48,644 INFO L93 Difference]: Finished difference Result 2754 states and 4368 transitions. [2019-10-13 21:11:48,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:11:48,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-10-13 21:11:48,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:48,666 INFO L225 Difference]: With dead ends: 2754 [2019-10-13 21:11:48,666 INFO L226 Difference]: Without dead ends: 1658 [2019-10-13 21:11:48,679 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:48,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2019-10-13 21:11:48,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1609. [2019-10-13 21:11:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2019-10-13 21:11:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2548 transitions. [2019-10-13 21:11:48,788 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2548 transitions. Word has length 102 [2019-10-13 21:11:48,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:48,789 INFO L462 AbstractCegarLoop]: Abstraction has 1609 states and 2548 transitions. [2019-10-13 21:11:48,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:11:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2548 transitions. [2019-10-13 21:11:48,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 21:11:48,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:48,792 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:49,001 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:49,001 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:49,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:49,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2036688864, now seen corresponding path program 1 times [2019-10-13 21:11:49,002 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:49,002 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29888128] [2019-10-13 21:11:49,002 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:49,002 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:49,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:49,195 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29888128] [2019-10-13 21:11:49,196 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:49,196 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:49,196 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268675245] [2019-10-13 21:11:49,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:49,200 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:49,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:49,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:49,201 INFO L87 Difference]: Start difference. First operand 1609 states and 2548 transitions. Second operand 7 states. [2019-10-13 21:11:52,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:52,759 INFO L93 Difference]: Finished difference Result 4737 states and 7695 transitions. [2019-10-13 21:11:52,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:11:52,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2019-10-13 21:11:52,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:52,788 INFO L225 Difference]: With dead ends: 4737 [2019-10-13 21:11:52,788 INFO L226 Difference]: Without dead ends: 3162 [2019-10-13 21:11:52,800 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:11:52,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2019-10-13 21:11:52,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 3092. [2019-10-13 21:11:52,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3092 states. [2019-10-13 21:11:52,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 4974 transitions. [2019-10-13 21:11:52,966 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 4974 transitions. Word has length 104 [2019-10-13 21:11:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:52,967 INFO L462 AbstractCegarLoop]: Abstraction has 3092 states and 4974 transitions. [2019-10-13 21:11:52,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 4974 transitions. [2019-10-13 21:11:52,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 21:11:52,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:52,969 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:52,970 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:52,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:52,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2032550312, now seen corresponding path program 1 times [2019-10-13 21:11:52,971 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:52,971 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960904763] [2019-10-13 21:11:52,971 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,971 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:11:53,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960904763] [2019-10-13 21:11:53,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393901156] [2019-10-13 21:11:53,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:53,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:11:53,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:54,039 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:54,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:11:54,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:54,670 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:11:54,670 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-13 21:11:54,671 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603993473] [2019-10-13 21:11:54,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:11:54,672 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:54,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:11:54,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:11:54,673 INFO L87 Difference]: Start difference. First operand 3092 states and 4974 transitions. Second operand 11 states. [2019-10-13 21:12:00,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:00,304 INFO L93 Difference]: Finished difference Result 13830 states and 22741 transitions. [2019-10-13 21:12:00,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:12:00,304 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2019-10-13 21:12:00,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:00,396 INFO L225 Difference]: With dead ends: 13830 [2019-10-13 21:12:00,396 INFO L226 Difference]: Without dead ends: 10772 [2019-10-13 21:12:00,428 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:12:00,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10772 states. [2019-10-13 21:12:00,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10772 to 10652. [2019-10-13 21:12:00,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10652 states. [2019-10-13 21:12:01,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10652 states to 10652 states and 17065 transitions. [2019-10-13 21:12:01,019 INFO L78 Accepts]: Start accepts. Automaton has 10652 states and 17065 transitions. Word has length 105 [2019-10-13 21:12:01,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:01,020 INFO L462 AbstractCegarLoop]: Abstraction has 10652 states and 17065 transitions. [2019-10-13 21:12:01,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:12:01,020 INFO L276 IsEmpty]: Start isEmpty. Operand 10652 states and 17065 transitions. [2019-10-13 21:12:01,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 21:12:01,023 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:01,023 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:01,231 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:01,232 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:01,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:01,232 INFO L82 PathProgramCache]: Analyzing trace with hash -2040401702, now seen corresponding path program 1 times [2019-10-13 21:12:01,233 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:01,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235647674] [2019-10-13 21:12:01,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:01,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:01,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:01,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235647674] [2019-10-13 21:12:01,475 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:01,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:01,475 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801630952] [2019-10-13 21:12:01,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:01,477 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:01,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:01,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:01,478 INFO L87 Difference]: Start difference. First operand 10652 states and 17065 transitions. Second operand 4 states. [2019-10-13 21:12:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:01,948 INFO L93 Difference]: Finished difference Result 21288 states and 34429 transitions. [2019-10-13 21:12:01,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:01,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-10-13 21:12:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:02,082 INFO L225 Difference]: With dead ends: 21288 [2019-10-13 21:12:02,083 INFO L226 Difference]: Without dead ends: 10670 [2019-10-13 21:12:02,145 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:02,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10670 states. [2019-10-13 21:12:02,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10670 to 10634. [2019-10-13 21:12:02,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10634 states. [2019-10-13 21:12:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10634 states to 10634 states and 16964 transitions. [2019-10-13 21:12:02,639 INFO L78 Accepts]: Start accepts. Automaton has 10634 states and 16964 transitions. Word has length 105 [2019-10-13 21:12:02,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:02,640 INFO L462 AbstractCegarLoop]: Abstraction has 10634 states and 16964 transitions. [2019-10-13 21:12:02,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 10634 states and 16964 transitions. [2019-10-13 21:12:02,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 21:12:02,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:02,643 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:02,643 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:02,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:02,644 INFO L82 PathProgramCache]: Analyzing trace with hash -431539305, now seen corresponding path program 1 times [2019-10-13 21:12:02,645 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:02,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667708968] [2019-10-13 21:12:02,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:02,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:02,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 21:12:02,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667708968] [2019-10-13 21:12:02,810 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:02,810 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:02,810 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272842821] [2019-10-13 21:12:02,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:02,811 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:02,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:02,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:02,812 INFO L87 Difference]: Start difference. First operand 10634 states and 16964 transitions. Second operand 7 states. [2019-10-13 21:12:06,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:06,420 INFO L93 Difference]: Finished difference Result 31882 states and 52630 transitions. [2019-10-13 21:12:06,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:06,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 21:12:06,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:06,603 INFO L225 Difference]: With dead ends: 31882 [2019-10-13 21:12:06,603 INFO L226 Difference]: Without dead ends: 21282 [2019-10-13 21:12:06,659 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21282 states.