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_spec9_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:12:40,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:12:40,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:12:40,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:12:40,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:12:40,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:12:40,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:12:40,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:12:40,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:12:40,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:12:40,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:12:40,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:12:40,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:12:40,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:12:40,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:12:40,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:12:40,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:12:40,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:12:40,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:12:40,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:12:40,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:12:40,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:12:40,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:12:40,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:12:40,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:12:40,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:12:40,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:12:40,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:12:40,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:12:40,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:12:40,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:12:40,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:12:40,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:12:40,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:12:40,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:12:40,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:12:40,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:12:40,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:12:40,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:12:40,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:12:40,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:12:40,742 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 21:12:40,774 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:12:40,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:12:40,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:12:40,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:12:40,781 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:12:40,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:12:40,782 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:12:40,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:12:40,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:12:40,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:12:40,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:12:40,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:12:40,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:12:40,783 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:12:40,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:12:40,783 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:12:40,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:12:40,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:12:40,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:12:40,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:12:40,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:12:40,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:40,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:12:40,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:12:40,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:12:40,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:12:40,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:12:40,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:12:40,787 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 21:12:41,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:12:41,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:12:41,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:12:41,087 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:12:41,088 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:12:41,089 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-10-13 21:12:41,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de189d348/1152a30de0014a21816bf930bbe46dc5/FLAGc6eb0d42f [2019-10-13 21:12:41,862 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:12:41,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-10-13 21:12:41,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de189d348/1152a30de0014a21816bf930bbe46dc5/FLAGc6eb0d42f [2019-10-13 21:12:42,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de189d348/1152a30de0014a21816bf930bbe46dc5 [2019-10-13 21:12:42,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:12:42,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:12:42,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:42,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:12:42,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:12:42,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:42" (1/1) ... [2019-10-13 21:12:42,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4200ab6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:42, skipping insertion in model container [2019-10-13 21:12:42,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:42" (1/1) ... [2019-10-13 21:12:42,067 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:12:42,171 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:12:42,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:42,918 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:12:43,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:43,176 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:12:43,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43 WrapperNode [2019-10-13 21:12:43,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:43,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:12:43,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:12:43,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:12:43,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:12:43,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:12:43,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:12:43,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:12:43,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (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 21:12:43,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:12:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:12:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:12:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:12:43,482 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:12:43,483 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:12:43,484 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:12:43,484 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:12:43,485 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:12:43,485 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:12:43,485 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:12:43,485 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:12:43,487 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:12:43,487 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:12:43,487 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:12:43,489 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:12:43,490 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:12:43,490 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:12:43,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:12:43,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:43,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:43,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:43,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:12:43,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:12:43,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:12:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:12:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:12:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:12:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:12:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:12:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:12:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:12:43,493 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:12:43,493 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:12:43,493 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:12:43,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-13 21:12:43,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-13 21:12:43,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-13 21:12:43,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-13 21:12:43,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:12:43,494 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:12:43,494 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:12:43,495 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:12:43,495 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:12:43,495 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:12:43,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:12:43,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:12:43,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:12:43,495 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:12:43,496 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:12:43,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-13 21:12:43,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-13 21:12:43,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:12:43,496 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-13 21:12:43,496 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-13 21:12:43,497 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:12:43,497 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-13 21:12:43,497 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-13 21:12:43,497 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-13 21:12:43,497 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-13 21:12:43,497 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:12:43,498 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:12:43,498 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:12:43,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:12:43,499 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:12:43,499 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:12:43,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:12:43,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:12:43,499 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:12:43,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:12:43,500 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 21:12:43,500 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 21:12:43,501 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 21:12:43,501 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 21:12:43,501 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:12:43,502 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:12:43,502 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:12:43,502 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 21:12:43,503 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 21:12:43,503 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 21:12:43,503 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 21:12:43,503 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:43,504 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:12:43,504 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:12:43,505 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-13 21:12:43,506 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-13 21:12:43,506 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:12:43,506 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-13 21:12:43,506 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-13 21:12:43,506 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:12:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:12:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 21:12:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 21:12:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:12:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:12:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:12:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:12:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:12:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:12:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:12:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:12:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:12:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:12:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:12:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:12:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:12:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:12:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:12:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:12:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:12:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:12:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:12:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:12:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:12:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:12:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:12:43,511 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:12:43,511 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:12:43,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-13 21:12:43,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-13 21:12:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:12:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:12:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:12:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:12:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:12:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:12:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:12:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:12:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:12:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:12:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:12:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:12:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:12:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:12:43,521 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:12:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:12:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:12:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:12:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:12:43,531 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:12:43,531 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:12:43,532 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:12:43,532 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:12:43,532 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:12:43,535 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:12:43,535 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:12:43,535 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:12:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:12:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:12:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:12:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:12:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:12:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:12:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-13 21:12:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-13 21:12:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:12:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:12:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:12:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:12:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:12:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:12:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:12:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 21:12:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 21:12:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-13 21:12:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-13 21:12:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-13 21:12:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-13 21:12:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-13 21:12:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-13 21:12:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-13 21:12:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-13 21:12:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:12:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:12:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:12:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:12:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:12:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 21:12:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 21:12:43,540 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 21:12:43,540 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 21:12:43,540 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:12:43,540 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:12:43,540 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 21:12:43,540 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 21:12:43,540 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 21:12:43,541 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 21:12:43,541 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:43,541 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:12:43,541 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:12:43,541 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-13 21:12:43,541 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-13 21:12:43,542 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-13 21:12:43,542 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-13 21:12:43,542 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:12:43,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:12:43,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:12:43,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:12:46,347 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:12:46,348 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:12:46,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:46 BoogieIcfgContainer [2019-10-13 21:12:46,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:12:46,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:12:46,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:12:46,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:12:46,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:12:42" (1/3) ... [2019-10-13 21:12:46,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567787bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:46, skipping insertion in model container [2019-10-13 21:12:46,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (2/3) ... [2019-10-13 21:12:46,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567787bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:46, skipping insertion in model container [2019-10-13 21:12:46,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:46" (3/3) ... [2019-10-13 21:12:46,361 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_productSimulator.cil.c [2019-10-13 21:12:46,372 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:12:46,386 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:12:46,401 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:12:46,508 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:12:46,509 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:12:46,509 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:12:46,509 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:12:46,509 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:12:46,509 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:12:46,509 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:12:46,509 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:12:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states. [2019-10-13 21:12:46,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 21:12:46,596 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:46,598 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:46,602 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:46,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:46,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1751171414, now seen corresponding path program 1 times [2019-10-13 21:12:46,619 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:46,620 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318819903] [2019-10-13 21:12:46,620 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:46,620 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:46,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:47,369 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318819903] [2019-10-13 21:12:47,370 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:47,371 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:47,371 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005195340] [2019-10-13 21:12:47,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:47,380 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:47,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:47,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:47,399 INFO L87 Difference]: Start difference. First operand 916 states. Second operand 6 states. [2019-10-13 21:12:47,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:47,697 INFO L93 Difference]: Finished difference Result 1478 states and 2306 transitions. [2019-10-13 21:12:47,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:47,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-13 21:12:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:47,740 INFO L225 Difference]: With dead ends: 1478 [2019-10-13 21:12:47,740 INFO L226 Difference]: Without dead ends: 744 [2019-10-13 21:12:47,755 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:47,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-10-13 21:12:47,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-10-13 21:12:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-13 21:12:47,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1149 transitions. [2019-10-13 21:12:47,903 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1149 transitions. Word has length 120 [2019-10-13 21:12:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:47,905 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1149 transitions. [2019-10-13 21:12:47,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1149 transitions. [2019-10-13 21:12:47,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 21:12:47,910 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:47,911 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:47,911 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:47,911 INFO L82 PathProgramCache]: Analyzing trace with hash 490428433, now seen corresponding path program 1 times [2019-10-13 21:12:47,912 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:47,912 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779672098] [2019-10-13 21:12:47,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:47,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:47,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:48,231 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779672098] [2019-10-13 21:12:48,231 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:48,231 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:48,231 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088286568] [2019-10-13 21:12:48,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:48,243 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:48,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:48,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:48,244 INFO L87 Difference]: Start difference. First operand 744 states and 1149 transitions. Second operand 4 states. [2019-10-13 21:12:48,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:48,335 INFO L93 Difference]: Finished difference Result 1431 states and 2229 transitions. [2019-10-13 21:12:48,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:48,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-13 21:12:48,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:48,346 INFO L225 Difference]: With dead ends: 1431 [2019-10-13 21:12:48,346 INFO L226 Difference]: Without dead ends: 744 [2019-10-13 21:12:48,351 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 21:12:48,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-10-13 21:12:48,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-10-13 21:12:48,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-13 21:12:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1148 transitions. [2019-10-13 21:12:48,411 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1148 transitions. Word has length 123 [2019-10-13 21:12:48,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:48,413 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1148 transitions. [2019-10-13 21:12:48,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:48,414 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1148 transitions. [2019-10-13 21:12:48,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 21:12:48,425 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:48,425 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:48,425 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:48,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:48,426 INFO L82 PathProgramCache]: Analyzing trace with hash -620177609, now seen corresponding path program 1 times [2019-10-13 21:12:48,426 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:48,426 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160945357] [2019-10-13 21:12:48,426 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:48,426 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:48,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:48,613 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160945357] [2019-10-13 21:12:48,613 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:48,613 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:48,613 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830954102] [2019-10-13 21:12:48,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:48,617 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:48,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:48,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:48,618 INFO L87 Difference]: Start difference. First operand 744 states and 1148 transitions. Second operand 4 states. [2019-10-13 21:12:48,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:48,709 INFO L93 Difference]: Finished difference Result 1431 states and 2228 transitions. [2019-10-13 21:12:48,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:48,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-13 21:12:48,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:48,721 INFO L225 Difference]: With dead ends: 1431 [2019-10-13 21:12:48,721 INFO L226 Difference]: Without dead ends: 744 [2019-10-13 21:12:48,726 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 21:12:48,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-10-13 21:12:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-10-13 21:12:48,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-13 21:12:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1147 transitions. [2019-10-13 21:12:48,763 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1147 transitions. Word has length 124 [2019-10-13 21:12:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:48,763 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1147 transitions. [2019-10-13 21:12:48,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:48,764 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1147 transitions. [2019-10-13 21:12:48,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 21:12:48,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:48,768 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:48,768 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:48,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:48,769 INFO L82 PathProgramCache]: Analyzing trace with hash 669317965, now seen corresponding path program 1 times [2019-10-13 21:12:48,769 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:48,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662418499] [2019-10-13 21:12:48,769 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:48,769 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:48,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:49,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662418499] [2019-10-13 21:12:49,025 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:49,025 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:49,025 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726498337] [2019-10-13 21:12:49,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:49,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:49,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:49,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:49,029 INFO L87 Difference]: Start difference. First operand 744 states and 1147 transitions. Second operand 4 states. [2019-10-13 21:12:49,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:49,116 INFO L93 Difference]: Finished difference Result 1431 states and 2227 transitions. [2019-10-13 21:12:49,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:49,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-13 21:12:49,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:49,124 INFO L225 Difference]: With dead ends: 1431 [2019-10-13 21:12:49,125 INFO L226 Difference]: Without dead ends: 744 [2019-10-13 21:12:49,129 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 21:12:49,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-10-13 21:12:49,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-10-13 21:12:49,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-13 21:12:49,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1146 transitions. [2019-10-13 21:12:49,168 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1146 transitions. Word has length 125 [2019-10-13 21:12:49,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:49,169 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1146 transitions. [2019-10-13 21:12:49,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:49,169 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1146 transitions. [2019-10-13 21:12:49,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 21:12:49,172 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:49,173 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:49,173 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:49,173 INFO L82 PathProgramCache]: Analyzing trace with hash -947447693, now seen corresponding path program 1 times [2019-10-13 21:12:49,174 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:49,174 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474328392] [2019-10-13 21:12:49,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:49,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:49,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:49,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474328392] [2019-10-13 21:12:49,338 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:49,338 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:49,339 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213206591] [2019-10-13 21:12:49,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:49,339 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:49,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:49,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:49,340 INFO L87 Difference]: Start difference. First operand 744 states and 1146 transitions. Second operand 4 states. [2019-10-13 21:12:49,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:49,408 INFO L93 Difference]: Finished difference Result 1431 states and 2226 transitions. [2019-10-13 21:12:49,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:49,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-13 21:12:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:49,415 INFO L225 Difference]: With dead ends: 1431 [2019-10-13 21:12:49,415 INFO L226 Difference]: Without dead ends: 744 [2019-10-13 21:12:49,420 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 21:12:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-10-13 21:12:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-10-13 21:12:49,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-13 21:12:49,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1145 transitions. [2019-10-13 21:12:49,447 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1145 transitions. Word has length 126 [2019-10-13 21:12:49,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:49,448 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1145 transitions. [2019-10-13 21:12:49,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:49,448 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1145 transitions. [2019-10-13 21:12:49,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 21:12:49,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:49,451 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:49,451 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:49,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:49,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1830968969, now seen corresponding path program 1 times [2019-10-13 21:12:49,452 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:49,452 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875549761] [2019-10-13 21:12:49,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:49,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:49,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:49,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875549761] [2019-10-13 21:12:49,595 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:49,596 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:49,596 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334475556] [2019-10-13 21:12:49,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:49,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:49,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:49,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:49,598 INFO L87 Difference]: Start difference. First operand 744 states and 1145 transitions. Second operand 4 states. [2019-10-13 21:12:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:49,661 INFO L93 Difference]: Finished difference Result 1431 states and 2225 transitions. [2019-10-13 21:12:49,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:49,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-13 21:12:49,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:49,668 INFO L225 Difference]: With dead ends: 1431 [2019-10-13 21:12:49,669 INFO L226 Difference]: Without dead ends: 744 [2019-10-13 21:12:49,757 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 21:12:49,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-10-13 21:12:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-10-13 21:12:49,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-13 21:12:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1144 transitions. [2019-10-13 21:12:49,787 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1144 transitions. Word has length 127 [2019-10-13 21:12:49,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:49,788 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1144 transitions. [2019-10-13 21:12:49,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:49,788 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1144 transitions. [2019-10-13 21:12:49,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 21:12:49,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:49,791 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:49,791 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:49,792 INFO L82 PathProgramCache]: Analyzing trace with hash -873883217, now seen corresponding path program 1 times [2019-10-13 21:12:49,792 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:49,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775314428] [2019-10-13 21:12:49,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:49,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:49,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:49,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775314428] [2019-10-13 21:12:49,990 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:49,990 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:12:49,990 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800379104] [2019-10-13 21:12:49,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:12:49,991 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:49,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:12:49,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:12:49,992 INFO L87 Difference]: Start difference. First operand 744 states and 1144 transitions. Second operand 11 states. [2019-10-13 21:12:50,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:50,206 INFO L93 Difference]: Finished difference Result 1389 states and 2145 transitions. [2019-10-13 21:12:50,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:12:50,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 128 [2019-10-13 21:12:50,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:50,216 INFO L225 Difference]: With dead ends: 1389 [2019-10-13 21:12:50,216 INFO L226 Difference]: Without dead ends: 753 [2019-10-13 21:12:50,220 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2019-10-13 21:12:50,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2019-10-13 21:12:50,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2019-10-13 21:12:50,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1153 transitions. [2019-10-13 21:12:50,268 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1153 transitions. Word has length 128 [2019-10-13 21:12:50,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:50,272 INFO L462 AbstractCegarLoop]: Abstraction has 751 states and 1153 transitions. [2019-10-13 21:12:50,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:12:50,272 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1153 transitions. [2019-10-13 21:12:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 21:12:50,275 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:50,275 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:50,276 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:50,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1613236558, now seen corresponding path program 1 times [2019-10-13 21:12:50,276 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:50,277 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132570127] [2019-10-13 21:12:50,282 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:50,283 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:50,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:50,426 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132570127] [2019-10-13 21:12:50,426 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:50,427 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:50,427 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714885836] [2019-10-13 21:12:50,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:50,428 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:50,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:50,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:50,428 INFO L87 Difference]: Start difference. First operand 751 states and 1153 transitions. Second operand 4 states. [2019-10-13 21:12:50,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:50,492 INFO L93 Difference]: Finished difference Result 1437 states and 2231 transitions. [2019-10-13 21:12:50,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:50,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2019-10-13 21:12:50,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:50,500 INFO L225 Difference]: With dead ends: 1437 [2019-10-13 21:12:50,501 INFO L226 Difference]: Without dead ends: 738 [2019-10-13 21:12:50,505 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 21:12:50,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-10-13 21:12:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-10-13 21:12:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-13 21:12:50,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1130 transitions. [2019-10-13 21:12:50,550 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1130 transitions. Word has length 128 [2019-10-13 21:12:50,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:50,550 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1130 transitions. [2019-10-13 21:12:50,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:50,551 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1130 transitions. [2019-10-13 21:12:50,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 21:12:50,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:50,553 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:50,554 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:50,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:50,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1929128491, now seen corresponding path program 1 times [2019-10-13 21:12:50,555 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:50,555 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644684342] [2019-10-13 21:12:50,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:50,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:50,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:50,804 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644684342] [2019-10-13 21:12:50,805 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:50,805 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:50,806 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730483197] [2019-10-13 21:12:50,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:50,806 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:50,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:50,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:50,807 INFO L87 Difference]: Start difference. First operand 738 states and 1130 transitions. Second operand 6 states. [2019-10-13 21:12:51,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:51,039 INFO L93 Difference]: Finished difference Result 1377 states and 2123 transitions. [2019-10-13 21:12:51,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:51,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2019-10-13 21:12:51,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:51,048 INFO L225 Difference]: With dead ends: 1377 [2019-10-13 21:12:51,048 INFO L226 Difference]: Without dead ends: 738 [2019-10-13 21:12:51,053 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-10-13 21:12:51,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-10-13 21:12:51,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-13 21:12:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1126 transitions. [2019-10-13 21:12:51,084 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1126 transitions. Word has length 129 [2019-10-13 21:12:51,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:51,085 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1126 transitions. [2019-10-13 21:12:51,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:51,085 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1126 transitions. [2019-10-13 21:12:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 21:12:51,088 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:51,088 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:51,089 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:51,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:51,089 INFO L82 PathProgramCache]: Analyzing trace with hash 2134384978, now seen corresponding path program 1 times [2019-10-13 21:12:51,089 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:51,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922655928] [2019-10-13 21:12:51,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:51,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:51,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:51,249 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922655928] [2019-10-13 21:12:51,249 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:51,250 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:51,250 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187144712] [2019-10-13 21:12:51,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:51,251 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:51,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:51,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:51,251 INFO L87 Difference]: Start difference. First operand 738 states and 1126 transitions. Second operand 6 states. [2019-10-13 21:12:51,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:51,472 INFO L93 Difference]: Finished difference Result 1377 states and 2119 transitions. [2019-10-13 21:12:51,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:51,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-10-13 21:12:51,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:51,480 INFO L225 Difference]: With dead ends: 1377 [2019-10-13 21:12:51,480 INFO L226 Difference]: Without dead ends: 738 [2019-10-13 21:12:51,488 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:51,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-10-13 21:12:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-10-13 21:12:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-13 21:12:51,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1122 transitions. [2019-10-13 21:12:51,517 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1122 transitions. Word has length 130 [2019-10-13 21:12:51,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:51,518 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1122 transitions. [2019-10-13 21:12:51,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1122 transitions. [2019-10-13 21:12:51,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 21:12:51,521 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:51,521 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:51,521 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:51,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:51,522 INFO L82 PathProgramCache]: Analyzing trace with hash -920602288, now seen corresponding path program 1 times [2019-10-13 21:12:51,522 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:51,522 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016110247] [2019-10-13 21:12:51,522 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:51,523 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:51,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:51,710 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:51,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016110247] [2019-10-13 21:12:51,711 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:51,711 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:51,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134628223] [2019-10-13 21:12:51,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:51,712 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:51,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:51,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:51,713 INFO L87 Difference]: Start difference. First operand 738 states and 1122 transitions. Second operand 6 states. [2019-10-13 21:12:51,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:51,947 INFO L93 Difference]: Finished difference Result 1377 states and 2115 transitions. [2019-10-13 21:12:51,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:51,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2019-10-13 21:12:51,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:51,954 INFO L225 Difference]: With dead ends: 1377 [2019-10-13 21:12:51,954 INFO L226 Difference]: Without dead ends: 738 [2019-10-13 21:12:51,958 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:51,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-10-13 21:12:51,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-10-13 21:12:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-13 21:12:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1118 transitions. [2019-10-13 21:12:51,985 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1118 transitions. Word has length 131 [2019-10-13 21:12:51,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:51,986 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1118 transitions. [2019-10-13 21:12:51,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:51,987 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1118 transitions. [2019-10-13 21:12:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 21:12:51,990 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:51,990 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:51,991 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:51,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:51,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1980126672, now seen corresponding path program 1 times [2019-10-13 21:12:51,991 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:51,992 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260788357] [2019-10-13 21:12:51,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:51,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:51,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:52,136 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260788357] [2019-10-13 21:12:52,136 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:52,136 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:52,137 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047208186] [2019-10-13 21:12:52,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:52,137 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:52,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:52,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:52,138 INFO L87 Difference]: Start difference. First operand 738 states and 1118 transitions. Second operand 7 states. [2019-10-13 21:12:52,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:52,227 INFO L93 Difference]: Finished difference Result 1377 states and 2111 transitions. [2019-10-13 21:12:52,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:52,228 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-13 21:12:52,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:52,234 INFO L225 Difference]: With dead ends: 1377 [2019-10-13 21:12:52,235 INFO L226 Difference]: Without dead ends: 717 [2019-10-13 21:12:52,239 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 21:12:52,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-13 21:12:52,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-10-13 21:12:52,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-13 21:12:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1084 transitions. [2019-10-13 21:12:52,267 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1084 transitions. Word has length 131 [2019-10-13 21:12:52,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:52,267 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1084 transitions. [2019-10-13 21:12:52,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:52,268 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1084 transitions. [2019-10-13 21:12:52,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 21:12:52,270 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:52,270 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:52,271 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:52,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:52,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1963930793, now seen corresponding path program 1 times [2019-10-13 21:12:52,271 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:52,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101392314] [2019-10-13 21:12:52,272 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:52,272 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:52,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:52,401 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101392314] [2019-10-13 21:12:52,401 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:52,401 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:52,402 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235803467] [2019-10-13 21:12:52,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:52,402 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:52,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:52,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:52,403 INFO L87 Difference]: Start difference. First operand 717 states and 1084 transitions. Second operand 6 states. [2019-10-13 21:12:52,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:52,504 INFO L93 Difference]: Finished difference Result 1356 states and 2077 transitions. [2019-10-13 21:12:52,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:52,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2019-10-13 21:12:52,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:52,510 INFO L225 Difference]: With dead ends: 1356 [2019-10-13 21:12:52,510 INFO L226 Difference]: Without dead ends: 717 [2019-10-13 21:12:52,515 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:52,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-13 21:12:52,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-10-13 21:12:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-13 21:12:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1083 transitions. [2019-10-13 21:12:52,540 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1083 transitions. Word has length 132 [2019-10-13 21:12:52,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:52,541 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1083 transitions. [2019-10-13 21:12:52,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1083 transitions. [2019-10-13 21:12:52,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-13 21:12:52,543 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:52,544 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:52,544 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:52,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:52,544 INFO L82 PathProgramCache]: Analyzing trace with hash -775379851, now seen corresponding path program 1 times [2019-10-13 21:12:52,545 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:52,545 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262429827] [2019-10-13 21:12:52,545 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:52,545 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:52,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:52,682 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262429827] [2019-10-13 21:12:52,683 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:52,683 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:52,683 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881633162] [2019-10-13 21:12:52,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:52,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:52,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:52,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:52,685 INFO L87 Difference]: Start difference. First operand 717 states and 1083 transitions. Second operand 6 states. [2019-10-13 21:12:52,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:52,816 INFO L93 Difference]: Finished difference Result 1356 states and 2076 transitions. [2019-10-13 21:12:52,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:52,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-10-13 21:12:52,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:52,823 INFO L225 Difference]: With dead ends: 1356 [2019-10-13 21:12:52,824 INFO L226 Difference]: Without dead ends: 717 [2019-10-13 21:12:52,828 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-13 21:12:52,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-10-13 21:12:52,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-13 21:12:52,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1082 transitions. [2019-10-13 21:12:52,854 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1082 transitions. Word has length 133 [2019-10-13 21:12:52,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:52,855 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1082 transitions. [2019-10-13 21:12:52,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:52,855 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1082 transitions. [2019-10-13 21:12:52,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 21:12:52,858 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:52,858 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:52,858 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:52,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:52,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2026224674, now seen corresponding path program 1 times [2019-10-13 21:12:52,859 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:52,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115329284] [2019-10-13 21:12:52,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:52,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:52,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:53,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115329284] [2019-10-13 21:12:53,021 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:53,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:53,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309726221] [2019-10-13 21:12:53,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:53,022 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:53,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:53,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:53,023 INFO L87 Difference]: Start difference. First operand 717 states and 1082 transitions. Second operand 4 states. [2019-10-13 21:12:53,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:53,101 INFO L93 Difference]: Finished difference Result 1356 states and 2075 transitions. [2019-10-13 21:12:53,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:53,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2019-10-13 21:12:53,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:53,110 INFO L225 Difference]: With dead ends: 1356 [2019-10-13 21:12:53,111 INFO L226 Difference]: Without dead ends: 717 [2019-10-13 21:12:53,116 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 21:12:53,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-13 21:12:53,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-10-13 21:12:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-13 21:12:53,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1081 transitions. [2019-10-13 21:12:53,148 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1081 transitions. Word has length 134 [2019-10-13 21:12:53,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:53,149 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1081 transitions. [2019-10-13 21:12:53,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:53,149 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1081 transitions. [2019-10-13 21:12:53,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 21:12:53,153 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:53,154 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:53,154 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:53,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:53,155 INFO L82 PathProgramCache]: Analyzing trace with hash 881957212, now seen corresponding path program 1 times [2019-10-13 21:12:53,155 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:53,155 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605794180] [2019-10-13 21:12:53,155 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:53,156 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:53,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:53,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605794180] [2019-10-13 21:12:53,443 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:53,443 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 21:12:53,443 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394675090] [2019-10-13 21:12:53,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 21:12:53,444 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:53,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 21:12:53,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:53,445 INFO L87 Difference]: Start difference. First operand 717 states and 1081 transitions. Second operand 13 states. [2019-10-13 21:12:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:53,684 INFO L93 Difference]: Finished difference Result 1357 states and 2074 transitions. [2019-10-13 21:12:53,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 21:12:53,685 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 134 [2019-10-13 21:12:53,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:53,691 INFO L225 Difference]: With dead ends: 1357 [2019-10-13 21:12:53,691 INFO L226 Difference]: Without dead ends: 717 [2019-10-13 21:12:53,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:12:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-13 21:12:53,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-10-13 21:12:53,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-13 21:12:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1080 transitions. [2019-10-13 21:12:53,723 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1080 transitions. Word has length 134 [2019-10-13 21:12:53,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:53,725 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1080 transitions. [2019-10-13 21:12:53,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 21:12:53,725 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1080 transitions. [2019-10-13 21:12:53,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 21:12:53,728 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:53,728 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:53,728 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:53,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:53,729 INFO L82 PathProgramCache]: Analyzing trace with hash -301817066, now seen corresponding path program 1 times [2019-10-13 21:12:53,730 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:53,730 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438036244] [2019-10-13 21:12:53,730 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:53,731 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:53,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:53,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438036244] [2019-10-13 21:12:53,874 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:53,874 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:53,874 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257170158] [2019-10-13 21:12:53,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:53,875 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:53,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:53,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:53,876 INFO L87 Difference]: Start difference. First operand 717 states and 1080 transitions. Second operand 4 states. [2019-10-13 21:12:55,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:55,086 INFO L93 Difference]: Finished difference Result 2012 states and 3085 transitions. [2019-10-13 21:12:55,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:55,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2019-10-13 21:12:55,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:55,096 INFO L225 Difference]: With dead ends: 2012 [2019-10-13 21:12:55,097 INFO L226 Difference]: Without dead ends: 1381 [2019-10-13 21:12:55,101 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2019-10-13 21:12:55,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1368. [2019-10-13 21:12:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2019-10-13 21:12:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2074 transitions. [2019-10-13 21:12:55,159 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2074 transitions. Word has length 135 [2019-10-13 21:12:55,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:55,160 INFO L462 AbstractCegarLoop]: Abstraction has 1368 states and 2074 transitions. [2019-10-13 21:12:55,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2074 transitions. [2019-10-13 21:12:55,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 21:12:55,163 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:55,163 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:55,164 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:55,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:55,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1014149374, now seen corresponding path program 1 times [2019-10-13 21:12:55,164 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:55,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707167956] [2019-10-13 21:12:55,165 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:55,165 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:55,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:55,386 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707167956] [2019-10-13 21:12:55,386 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:55,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:55,387 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445094651] [2019-10-13 21:12:55,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:55,388 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:55,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:55,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:55,389 INFO L87 Difference]: Start difference. First operand 1368 states and 2074 transitions. Second operand 6 states. [2019-10-13 21:13:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:00,257 INFO L93 Difference]: Finished difference Result 3425 states and 5390 transitions. [2019-10-13 21:13:00,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:13:00,257 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2019-10-13 21:13:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:00,280 INFO L225 Difference]: With dead ends: 3425 [2019-10-13 21:13:00,281 INFO L226 Difference]: Without dead ends: 2801 [2019-10-13 21:13:00,286 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:13:00,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2019-10-13 21:13:00,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2752. [2019-10-13 21:13:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2752 states. [2019-10-13 21:13:00,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 4348 transitions. [2019-10-13 21:13:00,423 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 4348 transitions. Word has length 136 [2019-10-13 21:13:00,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:00,423 INFO L462 AbstractCegarLoop]: Abstraction has 2752 states and 4348 transitions. [2019-10-13 21:13:00,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:13:00,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 4348 transitions. [2019-10-13 21:13:00,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-13 21:13:00,434 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:00,435 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:00,435 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:00,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:00,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1438060187, now seen corresponding path program 1 times [2019-10-13 21:13:00,436 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:00,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936282627] [2019-10-13 21:13:00,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:00,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:00,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:00,667 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:13:00,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936282627] [2019-10-13 21:13:00,668 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:00,668 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:13:00,669 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221017532] [2019-10-13 21:13:00,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:13:00,670 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:00,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:13:00,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:13:00,671 INFO L87 Difference]: Start difference. First operand 2752 states and 4348 transitions. Second operand 9 states. [2019-10-13 21:13:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:05,289 INFO L93 Difference]: Finished difference Result 5386 states and 8691 transitions. [2019-10-13 21:13:05,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:13:05,289 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 181 [2019-10-13 21:13:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:05,312 INFO L225 Difference]: With dead ends: 5386 [2019-10-13 21:13:05,312 INFO L226 Difference]: Without dead ends: 2776 [2019-10-13 21:13:05,329 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:13:05,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2019-10-13 21:13:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2768. [2019-10-13 21:13:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2768 states. [2019-10-13 21:13:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4428 transitions. [2019-10-13 21:13:05,638 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4428 transitions. Word has length 181 [2019-10-13 21:13:05,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:05,639 INFO L462 AbstractCegarLoop]: Abstraction has 2768 states and 4428 transitions. [2019-10-13 21:13:05,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:13:05,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4428 transitions. [2019-10-13 21:13:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-13 21:13:05,660 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:05,661 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:05,661 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:05,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:05,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2917670, now seen corresponding path program 1 times [2019-10-13 21:13:05,662 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:05,663 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577977350] [2019-10-13 21:13:05,663 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:05,663 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:05,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:13:05,936 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577977350] [2019-10-13 21:13:05,936 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:05,936 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:13:05,937 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430815283] [2019-10-13 21:13:05,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:13:05,938 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:05,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:13:05,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:13:05,939 INFO L87 Difference]: Start difference. First operand 2768 states and 4428 transitions. Second operand 8 states. [2019-10-13 21:13:14,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:14,427 INFO L93 Difference]: Finished difference Result 10376 states and 17239 transitions. [2019-10-13 21:13:14,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 21:13:14,427 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2019-10-13 21:13:14,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:14,496 INFO L225 Difference]: With dead ends: 10376 [2019-10-13 21:13:14,496 INFO L226 Difference]: Without dead ends: 7750 [2019-10-13 21:13:14,523 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:13:14,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states.