/usr/bin/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_spec2_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:43:00,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:43:00,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:43:00,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:43:00,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:43:00,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:43:00,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:43:00,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:43:00,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:43:00,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:43:00,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:43:00,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:43:00,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:43:00,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:43:00,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:43:00,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:43:00,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:43:00,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:43:00,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:43:00,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:43:00,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:43:00,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:43:00,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:43:00,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:43:00,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:43:00,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:43:00,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:43:00,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:43:00,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:43:00,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:43:00,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:43:00,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:43:00,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:43:00,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:43:00,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:43:00,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:43:00,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:43:00,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:43:00,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:43:00,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:43:00,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:43:00,773 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 [2019-11-07 00:43:00,800 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:43:00,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:43:00,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:43:00,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:43:00,804 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:43:00,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:43:00,805 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:43:00,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:43:00,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:43:00,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:43:00,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:43:00,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:43:00,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:43:00,806 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:43:00,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:43:00,807 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:43:00,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:43:00,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:43:00,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:43:00,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:43:00,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:43:00,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:43:00,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:43:00,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:43:00,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:43:00,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:43:00,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:43:00,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:43:00,814 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 [2019-11-07 00:43:01,093 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:43:01,113 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:43:01,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:43:01,121 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:43:01,122 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:43:01,122 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_productSimulator.cil.c [2019-11-07 00:43:01,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085ace67b/093099f8d55f4baa8c7208a42cfba5ab/FLAG8234a4bd7 [2019-11-07 00:43:01,842 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:43:01,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_productSimulator.cil.c [2019-11-07 00:43:01,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085ace67b/093099f8d55f4baa8c7208a42cfba5ab/FLAG8234a4bd7 [2019-11-07 00:43:02,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085ace67b/093099f8d55f4baa8c7208a42cfba5ab [2019-11-07 00:43:02,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:43:02,074 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:43:02,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:43:02,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:43:02,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:43:02,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:43:02" (1/1) ... [2019-11-07 00:43:02,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4d60e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:02, skipping insertion in model container [2019-11-07 00:43:02,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:43:02" (1/1) ... [2019-11-07 00:43:02,090 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:43:02,173 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:43:02,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:43:02,933 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:43:03,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:43:03,223 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:43:03,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:03 WrapperNode [2019-11-07 00:43:03,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:43:03,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:43:03,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:43:03,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:43:03,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:03" (1/1) ... [2019-11-07 00:43:03,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:03" (1/1) ... [2019-11-07 00:43:03,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:03" (1/1) ... [2019-11-07 00:43:03,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:03" (1/1) ... [2019-11-07 00:43:03,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:03" (1/1) ... [2019-11-07 00:43:03,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:03" (1/1) ... [2019-11-07 00:43:03,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:03" (1/1) ... [2019-11-07 00:43:03,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:43:03,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:43:03,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:43:03,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:43:03,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:03" (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 [2019-11-07 00:43:03,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:43:03,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:43:03,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:43:03,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:43:03,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:43:03,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:43:03,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:43:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:43:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:43:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:43:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:43:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:43:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:43:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:43:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:43:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:43:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:43:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 00:43:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 00:43:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 00:43:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 00:43:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:43:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:43:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:43:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:43:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:43:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:43:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:43:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:43:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:43:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:43:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:43:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:43:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:43:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:43:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:43:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:43:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:43:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:43:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:43:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:43:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:43:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:43:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:43:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:43:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:43:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:43:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:43:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:43:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:43:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:43:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-11-07 00:43:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-11-07 00:43:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:43:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-11-07 00:43:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-11-07 00:43:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:43:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-11-07 00:43:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-11-07 00:43:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-11-07 00:43:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-11-07 00:43:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:43:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:43:03,549 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:43:03,549 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:43:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:43:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:43:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:43:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:43:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:43:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:43:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-11-07 00:43:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-11-07 00:43:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-11-07 00:43:03,552 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-11-07 00:43:03,552 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:43:03,552 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:43:03,552 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:43:03,552 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-11-07 00:43:03,553 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-11-07 00:43:03,553 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-11-07 00:43:03,553 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-11-07 00:43:03,553 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:43:03,554 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:43:03,554 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:43:03,554 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-11-07 00:43:03,555 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-11-07 00:43:03,555 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:43:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-11-07 00:43:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-11-07 00:43:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:43:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:43:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 00:43:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 00:43:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:43:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:43:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:43:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:43:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:43:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:43:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:43:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:43:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:43:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:43:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:43:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:43:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:43:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:43:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:43:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:43:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:43:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:43:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:43:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:43:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:43:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:43:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:43:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 00:43:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 00:43:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 00:43:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 00:43:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:43:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:43:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:43:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:43:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:43:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:43:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:43:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:43:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:43:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:43:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:43:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:43:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:43:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:43:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:43:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:43:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:43:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:43:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:43:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:43:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:43:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:43:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:43:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:43:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:43:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:43:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:43:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:43:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:43:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:43:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:43:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:43:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:43:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:43:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:43:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:43:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:43:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:43:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:43:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:43:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:43:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:43:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:43:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:43:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:43:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:43:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 00:43:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 00:43:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-11-07 00:43:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-11-07 00:43:03,582 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-11-07 00:43:03,582 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-11-07 00:43:03,582 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-11-07 00:43:03,582 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-11-07 00:43:03,582 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-11-07 00:43:03,582 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-11-07 00:43:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:43:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:43:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:43:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:43:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:43:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-11-07 00:43:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-11-07 00:43:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-11-07 00:43:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-11-07 00:43:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:43:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:43:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-11-07 00:43:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-11-07 00:43:03,585 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-11-07 00:43:03,585 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-11-07 00:43:03,585 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:43:03,585 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:43:03,585 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:43:03,585 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-11-07 00:43:03,585 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-11-07 00:43:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-11-07 00:43:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-11-07 00:43:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:43:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:43:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:43:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:43:06,173 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:43:06,173 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:43:06,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:43:06 BoogieIcfgContainer [2019-11-07 00:43:06,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:43:06,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:43:06,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:43:06,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:43:06,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:43:02" (1/3) ... [2019-11-07 00:43:06,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8b8d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:43:06, skipping insertion in model container [2019-11-07 00:43:06,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:03" (2/3) ... [2019-11-07 00:43:06,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8b8d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:43:06, skipping insertion in model container [2019-11-07 00:43:06,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:43:06" (3/3) ... [2019-11-07 00:43:06,184 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_productSimulator.cil.c [2019-11-07 00:43:06,196 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:43:06,208 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:43:06,223 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:43:06,258 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:43:06,258 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:43:06,258 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:43:06,259 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:43:06,259 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:43:06,259 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:43:06,259 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:43:06,259 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:43:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states. [2019-11-07 00:43:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 00:43:06,316 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:06,317 INFO L410 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] [2019-11-07 00:43:06,319 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:06,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1390055657, now seen corresponding path program 1 times [2019-11-07 00:43:06,338 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:06,338 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462682613] [2019-11-07 00:43:06,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:07,032 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462682613] [2019-11-07 00:43:07,033 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:07,033 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:43:07,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289921533] [2019-11-07 00:43:07,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:43:07,041 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:07,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:43:07,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:07,059 INFO L87 Difference]: Start difference. First operand 926 states. Second operand 6 states. [2019-11-07 00:43:07,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:07,303 INFO L93 Difference]: Finished difference Result 1497 states and 2337 transitions. [2019-11-07 00:43:07,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:43:07,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2019-11-07 00:43:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:07,343 INFO L225 Difference]: With dead ends: 1497 [2019-11-07 00:43:07,343 INFO L226 Difference]: Without dead ends: 754 [2019-11-07 00:43:07,357 INFO L630 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 [2019-11-07 00:43:07,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2019-11-07 00:43:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2019-11-07 00:43:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2019-11-07 00:43:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1165 transitions. [2019-11-07 00:43:07,572 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1165 transitions. Word has length 119 [2019-11-07 00:43:07,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:07,579 INFO L462 AbstractCegarLoop]: Abstraction has 754 states and 1165 transitions. [2019-11-07 00:43:07,579 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:43:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1165 transitions. [2019-11-07 00:43:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-07 00:43:07,589 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:07,589 INFO L410 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] [2019-11-07 00:43:07,591 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:07,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:07,592 INFO L82 PathProgramCache]: Analyzing trace with hash -232939241, now seen corresponding path program 1 times [2019-11-07 00:43:07,592 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:07,593 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649758526] [2019-11-07 00:43:07,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:07,876 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649758526] [2019-11-07 00:43:07,876 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:07,876 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:43:07,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856491358] [2019-11-07 00:43:07,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:43:07,879 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:07,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:43:07,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:43:07,880 INFO L87 Difference]: Start difference. First operand 754 states and 1165 transitions. Second operand 4 states. [2019-11-07 00:43:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:07,992 INFO L93 Difference]: Finished difference Result 1450 states and 2260 transitions. [2019-11-07 00:43:07,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:43:07,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-11-07 00:43:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:08,000 INFO L225 Difference]: With dead ends: 1450 [2019-11-07 00:43:08,000 INFO L226 Difference]: Without dead ends: 754 [2019-11-07 00:43:08,004 INFO L630 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 [2019-11-07 00:43:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2019-11-07 00:43:08,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2019-11-07 00:43:08,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2019-11-07 00:43:08,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1164 transitions. [2019-11-07 00:43:08,042 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1164 transitions. Word has length 122 [2019-11-07 00:43:08,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:08,043 INFO L462 AbstractCegarLoop]: Abstraction has 754 states and 1164 transitions. [2019-11-07 00:43:08,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:43:08,043 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1164 transitions. [2019-11-07 00:43:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-07 00:43:08,053 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:08,053 INFO L410 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] [2019-11-07 00:43:08,054 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:08,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:08,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1715522467, now seen corresponding path program 1 times [2019-11-07 00:43:08,055 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:08,055 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662389008] [2019-11-07 00:43:08,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:08,253 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662389008] [2019-11-07 00:43:08,253 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:08,253 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:43:08,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102796991] [2019-11-07 00:43:08,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:43:08,256 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:08,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:43:08,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:43:08,257 INFO L87 Difference]: Start difference. First operand 754 states and 1164 transitions. Second operand 4 states. [2019-11-07 00:43:08,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:08,341 INFO L93 Difference]: Finished difference Result 1450 states and 2259 transitions. [2019-11-07 00:43:08,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:43:08,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-11-07 00:43:08,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:08,348 INFO L225 Difference]: With dead ends: 1450 [2019-11-07 00:43:08,349 INFO L226 Difference]: Without dead ends: 754 [2019-11-07 00:43:08,353 INFO L630 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 [2019-11-07 00:43:08,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2019-11-07 00:43:08,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2019-11-07 00:43:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2019-11-07 00:43:08,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1163 transitions. [2019-11-07 00:43:08,451 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1163 transitions. Word has length 123 [2019-11-07 00:43:08,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:08,451 INFO L462 AbstractCegarLoop]: Abstraction has 754 states and 1163 transitions. [2019-11-07 00:43:08,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:43:08,454 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1163 transitions. [2019-11-07 00:43:08,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-07 00:43:08,457 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:08,457 INFO L410 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] [2019-11-07 00:43:08,457 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:08,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:08,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1903026157, now seen corresponding path program 1 times [2019-11-07 00:43:08,458 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:08,458 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787559931] [2019-11-07 00:43:08,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:08,630 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787559931] [2019-11-07 00:43:08,630 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:08,631 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:43:08,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808618186] [2019-11-07 00:43:08,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:43:08,632 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:08,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:43:08,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:43:08,633 INFO L87 Difference]: Start difference. First operand 754 states and 1163 transitions. Second operand 4 states. [2019-11-07 00:43:08,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:08,733 INFO L93 Difference]: Finished difference Result 1450 states and 2258 transitions. [2019-11-07 00:43:08,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:43:08,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-11-07 00:43:08,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:08,745 INFO L225 Difference]: With dead ends: 1450 [2019-11-07 00:43:08,745 INFO L226 Difference]: Without dead ends: 754 [2019-11-07 00:43:08,751 INFO L630 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 [2019-11-07 00:43:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2019-11-07 00:43:08,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2019-11-07 00:43:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2019-11-07 00:43:08,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1162 transitions. [2019-11-07 00:43:08,781 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1162 transitions. Word has length 124 [2019-11-07 00:43:08,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:08,783 INFO L462 AbstractCegarLoop]: Abstraction has 754 states and 1162 transitions. [2019-11-07 00:43:08,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:43:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1162 transitions. [2019-11-07 00:43:08,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-07 00:43:08,788 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:08,789 INFO L410 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] [2019-11-07 00:43:08,789 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:08,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:08,789 INFO L82 PathProgramCache]: Analyzing trace with hash -2005235937, now seen corresponding path program 1 times [2019-11-07 00:43:08,790 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:08,790 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830629604] [2019-11-07 00:43:08,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:08,938 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830629604] [2019-11-07 00:43:08,939 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:08,939 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:43:08,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44491408] [2019-11-07 00:43:08,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:43:08,940 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:08,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:43:08,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:43:08,941 INFO L87 Difference]: Start difference. First operand 754 states and 1162 transitions. Second operand 4 states. [2019-11-07 00:43:09,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:09,016 INFO L93 Difference]: Finished difference Result 1450 states and 2257 transitions. [2019-11-07 00:43:09,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:43:09,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-11-07 00:43:09,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:09,034 INFO L225 Difference]: With dead ends: 1450 [2019-11-07 00:43:09,035 INFO L226 Difference]: Without dead ends: 754 [2019-11-07 00:43:09,042 INFO L630 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 [2019-11-07 00:43:09,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2019-11-07 00:43:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2019-11-07 00:43:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2019-11-07 00:43:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1161 transitions. [2019-11-07 00:43:09,076 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1161 transitions. Word has length 125 [2019-11-07 00:43:09,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:09,077 INFO L462 AbstractCegarLoop]: Abstraction has 754 states and 1161 transitions. [2019-11-07 00:43:09,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:43:09,077 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1161 transitions. [2019-11-07 00:43:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-07 00:43:09,082 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:09,082 INFO L410 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] [2019-11-07 00:43:09,082 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:09,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:09,083 INFO L82 PathProgramCache]: Analyzing trace with hash -475123953, now seen corresponding path program 1 times [2019-11-07 00:43:09,083 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:09,083 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894709746] [2019-11-07 00:43:09,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:09,264 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894709746] [2019-11-07 00:43:09,265 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:09,265 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:43:09,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382287786] [2019-11-07 00:43:09,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:43:09,266 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:09,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:43:09,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:43:09,267 INFO L87 Difference]: Start difference. First operand 754 states and 1161 transitions. Second operand 4 states. [2019-11-07 00:43:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:09,336 INFO L93 Difference]: Finished difference Result 1450 states and 2256 transitions. [2019-11-07 00:43:09,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:43:09,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-11-07 00:43:09,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:09,344 INFO L225 Difference]: With dead ends: 1450 [2019-11-07 00:43:09,344 INFO L226 Difference]: Without dead ends: 754 [2019-11-07 00:43:09,348 INFO L630 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 [2019-11-07 00:43:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2019-11-07 00:43:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2019-11-07 00:43:09,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2019-11-07 00:43:09,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1160 transitions. [2019-11-07 00:43:09,377 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1160 transitions. Word has length 126 [2019-11-07 00:43:09,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:09,377 INFO L462 AbstractCegarLoop]: Abstraction has 754 states and 1160 transitions. [2019-11-07 00:43:09,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:43:09,378 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1160 transitions. [2019-11-07 00:43:09,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-07 00:43:09,380 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:09,381 INFO L410 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] [2019-11-07 00:43:09,381 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:09,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:09,381 INFO L82 PathProgramCache]: Analyzing trace with hash 218267130, now seen corresponding path program 1 times [2019-11-07 00:43:09,382 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:09,382 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611493573] [2019-11-07 00:43:09,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:09,514 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611493573] [2019-11-07 00:43:09,514 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:09,514 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:43:09,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988424000] [2019-11-07 00:43:09,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:43:09,515 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:09,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:43:09,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:43:09,516 INFO L87 Difference]: Start difference. First operand 754 states and 1160 transitions. Second operand 4 states. [2019-11-07 00:43:09,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:09,583 INFO L93 Difference]: Finished difference Result 1450 states and 2255 transitions. [2019-11-07 00:43:09,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:43:09,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-11-07 00:43:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:09,589 INFO L225 Difference]: With dead ends: 1450 [2019-11-07 00:43:09,590 INFO L226 Difference]: Without dead ends: 754 [2019-11-07 00:43:09,594 INFO L630 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 [2019-11-07 00:43:09,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2019-11-07 00:43:09,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2019-11-07 00:43:09,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2019-11-07 00:43:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1159 transitions. [2019-11-07 00:43:09,626 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1159 transitions. Word has length 127 [2019-11-07 00:43:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:09,626 INFO L462 AbstractCegarLoop]: Abstraction has 754 states and 1159 transitions. [2019-11-07 00:43:09,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:43:09,626 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1159 transitions. [2019-11-07 00:43:09,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-07 00:43:09,629 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:09,629 INFO L410 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] [2019-11-07 00:43:09,630 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:09,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:09,630 INFO L82 PathProgramCache]: Analyzing trace with hash 117355163, now seen corresponding path program 1 times [2019-11-07 00:43:09,630 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:09,630 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432151806] [2019-11-07 00:43:09,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:09,899 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432151806] [2019-11-07 00:43:09,899 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:09,899 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:43:09,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455839789] [2019-11-07 00:43:09,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:43:09,901 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:09,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:43:09,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:43:09,901 INFO L87 Difference]: Start difference. First operand 754 states and 1159 transitions. Second operand 9 states. [2019-11-07 00:43:10,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:10,265 INFO L93 Difference]: Finished difference Result 1402 states and 2167 transitions. [2019-11-07 00:43:10,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:43:10,265 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2019-11-07 00:43:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:10,271 INFO L225 Difference]: With dead ends: 1402 [2019-11-07 00:43:10,272 INFO L226 Difference]: Without dead ends: 748 [2019-11-07 00:43:10,277 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:43:10,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-11-07 00:43:10,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2019-11-07 00:43:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2019-11-07 00:43:10,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1146 transitions. [2019-11-07 00:43:10,312 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1146 transitions. Word has length 127 [2019-11-07 00:43:10,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:10,313 INFO L462 AbstractCegarLoop]: Abstraction has 748 states and 1146 transitions. [2019-11-07 00:43:10,313 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:43:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1146 transitions. [2019-11-07 00:43:10,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-07 00:43:10,317 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:10,317 INFO L410 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] [2019-11-07 00:43:10,318 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:10,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:10,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1586108187, now seen corresponding path program 1 times [2019-11-07 00:43:10,319 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:10,319 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144217587] [2019-11-07 00:43:10,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:10,478 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:10,478 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144217587] [2019-11-07 00:43:10,479 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:10,480 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:43:10,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85680718] [2019-11-07 00:43:10,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:43:10,482 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:10,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:43:10,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:10,482 INFO L87 Difference]: Start difference. First operand 748 states and 1146 transitions. Second operand 6 states. [2019-11-07 00:43:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:10,711 INFO L93 Difference]: Finished difference Result 1396 states and 2154 transitions. [2019-11-07 00:43:10,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:43:10,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2019-11-07 00:43:10,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:10,718 INFO L225 Difference]: With dead ends: 1396 [2019-11-07 00:43:10,718 INFO L226 Difference]: Without dead ends: 748 [2019-11-07 00:43:10,722 INFO L630 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 [2019-11-07 00:43:10,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-11-07 00:43:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2019-11-07 00:43:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2019-11-07 00:43:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1142 transitions. [2019-11-07 00:43:10,763 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1142 transitions. Word has length 128 [2019-11-07 00:43:10,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:10,764 INFO L462 AbstractCegarLoop]: Abstraction has 748 states and 1142 transitions. [2019-11-07 00:43:10,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:43:10,764 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1142 transitions. [2019-11-07 00:43:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-07 00:43:10,766 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:10,767 INFO L410 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] [2019-11-07 00:43:10,767 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:10,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:10,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1697144642, now seen corresponding path program 1 times [2019-11-07 00:43:10,768 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:10,768 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746098319] [2019-11-07 00:43:10,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:10,975 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746098319] [2019-11-07 00:43:10,976 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:10,977 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:43:10,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859093246] [2019-11-07 00:43:10,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:43:10,979 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:10,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:43:10,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:10,980 INFO L87 Difference]: Start difference. First operand 748 states and 1142 transitions. Second operand 6 states. [2019-11-07 00:43:11,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:11,184 INFO L93 Difference]: Finished difference Result 1396 states and 2150 transitions. [2019-11-07 00:43:11,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:43:11,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2019-11-07 00:43:11,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:11,191 INFO L225 Difference]: With dead ends: 1396 [2019-11-07 00:43:11,191 INFO L226 Difference]: Without dead ends: 748 [2019-11-07 00:43:11,200 INFO L630 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 [2019-11-07 00:43:11,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-11-07 00:43:11,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2019-11-07 00:43:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2019-11-07 00:43:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1138 transitions. [2019-11-07 00:43:11,238 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1138 transitions. Word has length 129 [2019-11-07 00:43:11,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:11,238 INFO L462 AbstractCegarLoop]: Abstraction has 748 states and 1138 transitions. [2019-11-07 00:43:11,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:43:11,239 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1138 transitions. [2019-11-07 00:43:11,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-07 00:43:11,241 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:11,241 INFO L410 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] [2019-11-07 00:43:11,242 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:11,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:11,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1882039414, now seen corresponding path program 1 times [2019-11-07 00:43:11,242 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:11,242 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915083502] [2019-11-07 00:43:11,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:11,436 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915083502] [2019-11-07 00:43:11,436 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:11,436 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:43:11,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664377654] [2019-11-07 00:43:11,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:43:11,438 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:11,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:43:11,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:11,439 INFO L87 Difference]: Start difference. First operand 748 states and 1138 transitions. Second operand 6 states. [2019-11-07 00:43:11,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:11,709 INFO L93 Difference]: Finished difference Result 1396 states and 2146 transitions. [2019-11-07 00:43:11,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:43:11,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-11-07 00:43:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:11,721 INFO L225 Difference]: With dead ends: 1396 [2019-11-07 00:43:11,721 INFO L226 Difference]: Without dead ends: 748 [2019-11-07 00:43:11,727 INFO L630 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 [2019-11-07 00:43:11,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-11-07 00:43:11,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2019-11-07 00:43:11,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2019-11-07 00:43:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1134 transitions. [2019-11-07 00:43:11,767 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1134 transitions. Word has length 130 [2019-11-07 00:43:11,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:11,768 INFO L462 AbstractCegarLoop]: Abstraction has 748 states and 1134 transitions. [2019-11-07 00:43:11,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:43:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1134 transitions. [2019-11-07 00:43:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-07 00:43:11,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:11,771 INFO L410 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] [2019-11-07 00:43:11,772 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:11,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1517623306, now seen corresponding path program 1 times [2019-11-07 00:43:11,772 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:11,772 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637097189] [2019-11-07 00:43:11,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:11,923 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637097189] [2019-11-07 00:43:11,923 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:11,923 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:11,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353718974] [2019-11-07 00:43:11,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:11,925 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:11,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:11,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:11,926 INFO L87 Difference]: Start difference. First operand 748 states and 1134 transitions. Second operand 7 states. [2019-11-07 00:43:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:12,053 INFO L93 Difference]: Finished difference Result 1396 states and 2142 transitions. [2019-11-07 00:43:12,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:12,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2019-11-07 00:43:12,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:12,059 INFO L225 Difference]: With dead ends: 1396 [2019-11-07 00:43:12,059 INFO L226 Difference]: Without dead ends: 727 [2019-11-07 00:43:12,063 INFO L630 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 [2019-11-07 00:43:12,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2019-11-07 00:43:12,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2019-11-07 00:43:12,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2019-11-07 00:43:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1100 transitions. [2019-11-07 00:43:12,093 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1100 transitions. Word has length 130 [2019-11-07 00:43:12,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:12,094 INFO L462 AbstractCegarLoop]: Abstraction has 727 states and 1100 transitions. [2019-11-07 00:43:12,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1100 transitions. [2019-11-07 00:43:12,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 00:43:12,096 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:12,097 INFO L410 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] [2019-11-07 00:43:12,097 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:12,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:12,097 INFO L82 PathProgramCache]: Analyzing trace with hash -61574717, now seen corresponding path program 1 times [2019-11-07 00:43:12,098 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:12,098 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678418321] [2019-11-07 00:43:12,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:12,235 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678418321] [2019-11-07 00:43:12,235 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:12,235 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:43:12,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466192893] [2019-11-07 00:43:12,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:43:12,236 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:12,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:43:12,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:12,236 INFO L87 Difference]: Start difference. First operand 727 states and 1100 transitions. Second operand 6 states. [2019-11-07 00:43:12,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:12,338 INFO L93 Difference]: Finished difference Result 1375 states and 2108 transitions. [2019-11-07 00:43:12,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:43:12,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2019-11-07 00:43:12,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:12,344 INFO L225 Difference]: With dead ends: 1375 [2019-11-07 00:43:12,344 INFO L226 Difference]: Without dead ends: 727 [2019-11-07 00:43:12,348 INFO L630 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 [2019-11-07 00:43:12,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2019-11-07 00:43:12,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2019-11-07 00:43:12,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2019-11-07 00:43:12,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1099 transitions. [2019-11-07 00:43:12,376 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1099 transitions. Word has length 131 [2019-11-07 00:43:12,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:12,378 INFO L462 AbstractCegarLoop]: Abstraction has 727 states and 1099 transitions. [2019-11-07 00:43:12,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:43:12,379 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1099 transitions. [2019-11-07 00:43:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 00:43:12,382 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:12,382 INFO L410 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] [2019-11-07 00:43:12,382 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:12,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:12,383 INFO L82 PathProgramCache]: Analyzing trace with hash -499475921, now seen corresponding path program 1 times [2019-11-07 00:43:12,383 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:12,383 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372048231] [2019-11-07 00:43:12,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:12,521 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372048231] [2019-11-07 00:43:12,521 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:12,521 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:43:12,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103773337] [2019-11-07 00:43:12,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:43:12,523 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:12,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:43:12,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:12,523 INFO L87 Difference]: Start difference. First operand 727 states and 1099 transitions. Second operand 6 states. [2019-11-07 00:43:12,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:12,628 INFO L93 Difference]: Finished difference Result 1375 states and 2107 transitions. [2019-11-07 00:43:12,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:43:12,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2019-11-07 00:43:12,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:12,634 INFO L225 Difference]: With dead ends: 1375 [2019-11-07 00:43:12,634 INFO L226 Difference]: Without dead ends: 727 [2019-11-07 00:43:12,638 INFO L630 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 [2019-11-07 00:43:12,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2019-11-07 00:43:12,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2019-11-07 00:43:12,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2019-11-07 00:43:12,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1098 transitions. [2019-11-07 00:43:12,664 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1098 transitions. Word has length 132 [2019-11-07 00:43:12,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:12,665 INFO L462 AbstractCegarLoop]: Abstraction has 727 states and 1098 transitions. [2019-11-07 00:43:12,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:43:12,665 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1098 transitions. [2019-11-07 00:43:12,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-07 00:43:12,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:12,668 INFO L410 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] [2019-11-07 00:43:12,668 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:12,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:12,669 INFO L82 PathProgramCache]: Analyzing trace with hash 2067723976, now seen corresponding path program 1 times [2019-11-07 00:43:12,669 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:12,669 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653889517] [2019-11-07 00:43:12,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:12,879 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653889517] [2019-11-07 00:43:12,879 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:12,879 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-07 00:43:12,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529816403] [2019-11-07 00:43:12,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:43:12,880 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:12,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:43:12,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:43:12,881 INFO L87 Difference]: Start difference. First operand 727 states and 1098 transitions. Second operand 11 states. [2019-11-07 00:43:13,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:13,314 INFO L93 Difference]: Finished difference Result 1376 states and 2106 transitions. [2019-11-07 00:43:13,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:43:13,315 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 133 [2019-11-07 00:43:13,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:13,321 INFO L225 Difference]: With dead ends: 1376 [2019-11-07 00:43:13,321 INFO L226 Difference]: Without dead ends: 727 [2019-11-07 00:43:13,325 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:43:13,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2019-11-07 00:43:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2019-11-07 00:43:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2019-11-07 00:43:13,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1097 transitions. [2019-11-07 00:43:13,351 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1097 transitions. Word has length 133 [2019-11-07 00:43:13,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:13,351 INFO L462 AbstractCegarLoop]: Abstraction has 727 states and 1097 transitions. [2019-11-07 00:43:13,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:43:13,351 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1097 transitions. [2019-11-07 00:43:13,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-11-07 00:43:13,354 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:13,354 INFO L410 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] [2019-11-07 00:43:13,354 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:13,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1980443808, now seen corresponding path program 1 times [2019-11-07 00:43:13,355 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:13,355 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181029] [2019-11-07 00:43:13,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:13,477 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181029] [2019-11-07 00:43:13,477 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:13,477 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:43:13,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701406181] [2019-11-07 00:43:13,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:43:13,478 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:13,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:43:13,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:43:13,479 INFO L87 Difference]: Start difference. First operand 727 states and 1097 transitions. Second operand 4 states. [2019-11-07 00:43:14,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:14,617 INFO L93 Difference]: Finished difference Result 2040 states and 3133 transitions. [2019-11-07 00:43:14,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:43:14,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2019-11-07 00:43:14,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:14,629 INFO L225 Difference]: With dead ends: 2040 [2019-11-07 00:43:14,629 INFO L226 Difference]: Without dead ends: 1400 [2019-11-07 00:43:14,634 INFO L630 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 [2019-11-07 00:43:14,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2019-11-07 00:43:14,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1387. [2019-11-07 00:43:14,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1387 states. [2019-11-07 00:43:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 2107 transitions. [2019-11-07 00:43:14,737 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 2107 transitions. Word has length 134 [2019-11-07 00:43:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:14,738 INFO L462 AbstractCegarLoop]: Abstraction has 1387 states and 2107 transitions. [2019-11-07 00:43:14,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:43:14,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 2107 transitions. [2019-11-07 00:43:14,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-07 00:43:14,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:14,741 INFO L410 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] [2019-11-07 00:43:14,741 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:14,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:14,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1183400857, now seen corresponding path program 1 times [2019-11-07 00:43:14,742 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:14,742 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583769283] [2019-11-07 00:43:14,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:14,942 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583769283] [2019-11-07 00:43:14,943 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:14,943 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:43:14,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585735428] [2019-11-07 00:43:14,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:43:14,944 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:14,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:43:14,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:14,945 INFO L87 Difference]: Start difference. First operand 1387 states and 2107 transitions. Second operand 6 states. [2019-11-07 00:43:19,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:19,797 INFO L93 Difference]: Finished difference Result 3471 states and 5469 transitions. [2019-11-07 00:43:19,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:43:19,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2019-11-07 00:43:19,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:19,822 INFO L225 Difference]: With dead ends: 3471 [2019-11-07 00:43:19,822 INFO L226 Difference]: Without dead ends: 2838 [2019-11-07 00:43:19,830 INFO L630 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 [2019-11-07 00:43:19,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2019-11-07 00:43:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 2789. [2019-11-07 00:43:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2789 states. [2019-11-07 00:43:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 4412 transitions. [2019-11-07 00:43:19,974 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 4412 transitions. Word has length 135 [2019-11-07 00:43:19,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:19,975 INFO L462 AbstractCegarLoop]: Abstraction has 2789 states and 4412 transitions. [2019-11-07 00:43:19,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:43:19,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 4412 transitions. [2019-11-07 00:43:19,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-11-07 00:43:19,985 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:19,985 INFO L410 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] [2019-11-07 00:43:19,986 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:19,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:19,986 INFO L82 PathProgramCache]: Analyzing trace with hash -185210926, now seen corresponding path program 1 times [2019-11-07 00:43:19,986 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:19,986 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116404552] [2019-11-07 00:43:19,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:20,191 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116404552] [2019-11-07 00:43:20,191 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:20,191 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:43:20,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225615279] [2019-11-07 00:43:20,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:43:20,193 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:20,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:43:20,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:43:20,194 INFO L87 Difference]: Start difference. First operand 2789 states and 4412 transitions. Second operand 9 states. [2019-11-07 00:43:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:25,081 INFO L93 Difference]: Finished difference Result 5459 states and 8816 transitions. [2019-11-07 00:43:25,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:43:25,081 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 180 [2019-11-07 00:43:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:25,102 INFO L225 Difference]: With dead ends: 5459 [2019-11-07 00:43:25,102 INFO L226 Difference]: Without dead ends: 2813 [2019-11-07 00:43:25,119 INFO L630 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 [2019-11-07 00:43:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2019-11-07 00:43:25,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2805. [2019-11-07 00:43:25,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2805 states. [2019-11-07 00:43:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 4492 transitions. [2019-11-07 00:43:25,271 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 4492 transitions. Word has length 180 [2019-11-07 00:43:25,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:25,271 INFO L462 AbstractCegarLoop]: Abstraction has 2805 states and 4492 transitions. [2019-11-07 00:43:25,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:43:25,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 4492 transitions. [2019-11-07 00:43:25,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-11-07 00:43:25,284 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:25,285 INFO L410 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] [2019-11-07 00:43:25,285 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:25,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:25,285 INFO L82 PathProgramCache]: Analyzing trace with hash 748218603, now seen corresponding path program 1 times [2019-11-07 00:43:25,286 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:25,286 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266375905] [2019-11-07 00:43:25,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:43:25,517 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266375905] [2019-11-07 00:43:25,517 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:25,517 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:43:25,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097569053] [2019-11-07 00:43:25,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:43:25,519 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:25,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:43:25,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:43:25,520 INFO L87 Difference]: Start difference. First operand 2805 states and 4492 transitions. Second operand 8 states. [2019-11-07 00:43:33,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:33,304 INFO L93 Difference]: Finished difference Result 10521 states and 17486 transitions. [2019-11-07 00:43:33,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 00:43:33,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 181 [2019-11-07 00:43:33,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:33,373 INFO L225 Difference]: With dead ends: 10521 [2019-11-07 00:43:33,373 INFO L226 Difference]: Without dead ends: 7859 [2019-11-07 00:43:33,399 INFO L630 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 [2019-11-07 00:43:33,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7859 states. [2019-11-07 00:43:33,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7859 to 7785. [2019-11-07 00:43:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7785 states. [2019-11-07 00:43:33,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7785 states to 7785 states and 12512 transitions. [2019-11-07 00:43:33,880 INFO L78 Accepts]: Start accepts. Automaton has 7785 states and 12512 transitions. Word has length 181 [2019-11-07 00:43:33,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:33,881 INFO L462 AbstractCegarLoop]: Abstraction has 7785 states and 12512 transitions. [2019-11-07 00:43:33,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:43:33,881 INFO L276 IsEmpty]: Start isEmpty. Operand 7785 states and 12512 transitions. [2019-11-07 00:43:33,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-11-07 00:43:33,891 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:33,891 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:33,891 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:33,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:33,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1478649548, now seen corresponding path program 1 times [2019-11-07 00:43:33,892 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:33,892 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515555346] [2019-11-07 00:43:33,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:43:34,054 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515555346] [2019-11-07 00:43:34,054 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:34,054 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:43:34,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458400253] [2019-11-07 00:43:34,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:43:34,055 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:34,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:43:34,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:43:34,055 INFO L87 Difference]: Start difference. First operand 7785 states and 12512 transitions. Second operand 4 states.