java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:11:43,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:11:43,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:11:43,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:11:43,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:11:43,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:11:43,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:11:43,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:11:43,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:11:43,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:11:43,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:11:43,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:11:43,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:11:43,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:11:43,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:11:43,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:11:43,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:11:43,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:11:43,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:11:43,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:11:43,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:11:43,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:11:43,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:11:43,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:11:43,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:11:43,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:11:43,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:11:43,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:11:43,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:11:43,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:11:43,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:11:43,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:11:43,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:11:43,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:11:43,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:11:43,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:11:43,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:11:43,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:11:43,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:11:43,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:11:43,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:11:43,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:11:43,540 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:11:43,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:11:43,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:11:43,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:11:43,543 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:11:43,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:11:43,543 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:11:43,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:11:43,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:11:43,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:11:43,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:11:43,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:11:43,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:11:43,546 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:11:43,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:11:43,547 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:11:43,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:11:43,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:11:43,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:11:43,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:11:43,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:11:43,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:11:43,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:11:43,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:11:43,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:11:43,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:11:43,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:11:43,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:11:43,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:11:43,856 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:11:43,869 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:11:43,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:11:43,874 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:11:43,874 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:11:43,875 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-10-15 01:11:43,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd049dedd/5df7f1522fd14b3086f1b183fc8a6c5d/FLAG28d41f5a5 [2019-10-15 01:11:44,594 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:11:44,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-10-15 01:11:44,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd049dedd/5df7f1522fd14b3086f1b183fc8a6c5d/FLAG28d41f5a5 [2019-10-15 01:11:44,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd049dedd/5df7f1522fd14b3086f1b183fc8a6c5d [2019-10-15 01:11:44,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:11:44,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:11:44,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:44,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:11:44,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:11:44,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:44" (1/1) ... [2019-10-15 01:11:44,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2322f431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:44, skipping insertion in model container [2019-10-15 01:11:44,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:44" (1/1) ... [2019-10-15 01:11:44,806 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:11:44,896 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:11:45,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:45,692 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:11:45,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:46,009 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:11:46,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:46 WrapperNode [2019-10-15 01:11:46,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:46,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:11:46,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:11:46,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:11:46,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:46" (1/1) ... [2019-10-15 01:11:46,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:46" (1/1) ... [2019-10-15 01:11:46,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:46" (1/1) ... [2019-10-15 01:11:46,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:46" (1/1) ... [2019-10-15 01:11:46,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:46" (1/1) ... [2019-10-15 01:11:46,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:46" (1/1) ... [2019-10-15 01:11:46,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:46" (1/1) ... [2019-10-15 01:11:46,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:11:46,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:11:46,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:11:46,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:11:46,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:11:46,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:11:46,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:11:46,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:11:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:11:46,299 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:11:46,299 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:11:46,299 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:11:46,299 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:11:46,300 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:11:46,300 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:11:46,300 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:11:46,301 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:11:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:11:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:11:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:11:46,305 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:11:46,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:11:46,306 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:11:46,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:11:46,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:11:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:11:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:11:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:11:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:11:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:11:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:11:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:11:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:11:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:11:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:11:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:11:46,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:11:46,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-15 01:11:46,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-15 01:11:46,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-15 01:11:46,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-15 01:11:46,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:11:46,310 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:11:46,310 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:11:46,310 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:11:46,310 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:11:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:11:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:11:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:11:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:11:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:11:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:11:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-15 01:11:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-15 01:11:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:11:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-15 01:11:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-15 01:11:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:11:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-15 01:11:46,313 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-15 01:11:46,313 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-15 01:11:46,313 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-15 01:11:46,313 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:11:46,314 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:11:46,314 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:11:46,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:11:46,314 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:11:46,314 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:11:46,315 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:11:46,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:11:46,315 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:11:46,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:11:46,315 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-15 01:11:46,315 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-15 01:11:46,316 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-15 01:11:46,316 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-15 01:11:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:11:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:11:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:11:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-15 01:11:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-15 01:11:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-15 01:11:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-15 01:11:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:11:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:11:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-15 01:11:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-15 01:11:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:11:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-15 01:11:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-15 01:11:46,322 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:11:46,322 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:11:46,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:11:46,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:11:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:11:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:11:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:11:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:11:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:11:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:11:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:11:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:11:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:11:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:11:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:11:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:11:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:11:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:11:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:11:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:11:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:11:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:11:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:11:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:11:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:11:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:11:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:11:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:11:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:11:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-15 01:11:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-15 01:11:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:11:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:11:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:11:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:11:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:11:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:11:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:11:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:11:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:11:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:11:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:11:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:11:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:11:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:11:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:11:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:11:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:11:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:11:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:11:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:11:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:11:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:11:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:11:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:11:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:11:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:11:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:11:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:11:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:11:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:11:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:11:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:11:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:11:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-15 01:11:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-15 01:11:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:11:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:11:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:11:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:11:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:11:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:11:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:11:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:11:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:11:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-15 01:11:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-15 01:11:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-15 01:11:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-15 01:11:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-15 01:11:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-15 01:11:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-15 01:11:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-15 01:11:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:11:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:11:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:11:46,352 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:11:46,352 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:11:46,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-15 01:11:46,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-15 01:11:46,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-15 01:11:46,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-15 01:11:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:11:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:11:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-15 01:11:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-15 01:11:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-15 01:11:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-15 01:11:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:11:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:11:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-15 01:11:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-15 01:11:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-15 01:11:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-15 01:11:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:11:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:11:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:11:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:11:48,821 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:11:48,821 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:11:48,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:48 BoogieIcfgContainer [2019-10-15 01:11:48,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:11:48,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:11:48,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:11:48,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:11:48,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:11:44" (1/3) ... [2019-10-15 01:11:48,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be71833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:48, skipping insertion in model container [2019-10-15 01:11:48,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:46" (2/3) ... [2019-10-15 01:11:48,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be71833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:48, skipping insertion in model container [2019-10-15 01:11:48,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:48" (3/3) ... [2019-10-15 01:11:48,872 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_productSimulator.cil.c [2019-10-15 01:11:48,884 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:11:48,895 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:11:48,910 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:11:48,947 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:11:48,947 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:11:48,947 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:11:48,947 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:11:48,947 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:11:48,948 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:11:48,948 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:11:48,948 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:11:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states. [2019-10-15 01:11:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 01:11:49,033 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:49,035 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:49,037 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:49,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:49,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1751171414, now seen corresponding path program 1 times [2019-10-15 01:11:49,055 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:49,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415983721] [2019-10-15 01:11:49,056 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:49,056 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:49,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:49,841 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415983721] [2019-10-15 01:11:49,842 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:49,842 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:49,843 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167668092] [2019-10-15 01:11:49,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:49,851 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:49,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:49,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:49,875 INFO L87 Difference]: Start difference. First operand 916 states. Second operand 6 states. [2019-10-15 01:11:50,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:50,080 INFO L93 Difference]: Finished difference Result 1478 states and 2306 transitions. [2019-10-15 01:11:50,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:50,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-15 01:11:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:50,126 INFO L225 Difference]: With dead ends: 1478 [2019-10-15 01:11:50,126 INFO L226 Difference]: Without dead ends: 744 [2019-10-15 01:11:50,142 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:50,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-10-15 01:11:50,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-10-15 01:11:50,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-15 01:11:50,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1149 transitions. [2019-10-15 01:11:50,317 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1149 transitions. Word has length 120 [2019-10-15 01:11:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:50,327 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1149 transitions. [2019-10-15 01:11:50,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:50,328 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1149 transitions. [2019-10-15 01:11:50,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-15 01:11:50,337 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:50,338 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:50,338 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:50,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:50,343 INFO L82 PathProgramCache]: Analyzing trace with hash 490428433, now seen corresponding path program 1 times [2019-10-15 01:11:50,343 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:50,343 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324401201] [2019-10-15 01:11:50,343 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:50,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:50,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:50,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324401201] [2019-10-15 01:11:50,676 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:50,676 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:50,676 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085928465] [2019-10-15 01:11:50,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:50,682 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:50,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:50,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:50,683 INFO L87 Difference]: Start difference. First operand 744 states and 1149 transitions. Second operand 4 states. [2019-10-15 01:11:50,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:50,784 INFO L93 Difference]: Finished difference Result 1431 states and 2229 transitions. [2019-10-15 01:11:50,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:50,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-15 01:11:50,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:50,794 INFO L225 Difference]: With dead ends: 1431 [2019-10-15 01:11:50,794 INFO L226 Difference]: Without dead ends: 744 [2019-10-15 01:11:50,799 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:50,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-10-15 01:11:50,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-10-15 01:11:50,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-15 01:11:50,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1148 transitions. [2019-10-15 01:11:50,837 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1148 transitions. Word has length 123 [2019-10-15 01:11:50,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:50,838 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1148 transitions. [2019-10-15 01:11:50,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1148 transitions. [2019-10-15 01:11:50,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 01:11:50,841 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:50,841 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:50,841 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:50,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:50,842 INFO L82 PathProgramCache]: Analyzing trace with hash -620177609, now seen corresponding path program 1 times [2019-10-15 01:11:50,842 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:50,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937307579] [2019-10-15 01:11:50,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:50,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:50,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:51,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937307579] [2019-10-15 01:11:51,058 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:51,058 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:51,059 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105829628] [2019-10-15 01:11:51,059 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:51,060 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:51,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:51,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:51,061 INFO L87 Difference]: Start difference. First operand 744 states and 1148 transitions. Second operand 4 states. [2019-10-15 01:11:51,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:51,138 INFO L93 Difference]: Finished difference Result 1431 states and 2228 transitions. [2019-10-15 01:11:51,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:51,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-15 01:11:51,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:51,149 INFO L225 Difference]: With dead ends: 1431 [2019-10-15 01:11:51,150 INFO L226 Difference]: Without dead ends: 744 [2019-10-15 01:11:51,154 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:51,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-10-15 01:11:51,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-10-15 01:11:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-15 01:11:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1147 transitions. [2019-10-15 01:11:51,190 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1147 transitions. Word has length 124 [2019-10-15 01:11:51,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:51,191 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1147 transitions. [2019-10-15 01:11:51,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:51,191 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1147 transitions. [2019-10-15 01:11:51,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 01:11:51,194 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:51,194 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:51,194 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:51,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:51,195 INFO L82 PathProgramCache]: Analyzing trace with hash 669317965, now seen corresponding path program 1 times [2019-10-15 01:11:51,195 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:51,195 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529070792] [2019-10-15 01:11:51,195 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:51,196 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:51,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:51,423 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529070792] [2019-10-15 01:11:51,423 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:51,423 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:51,424 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208237926] [2019-10-15 01:11:51,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:51,425 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:51,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:51,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:51,425 INFO L87 Difference]: Start difference. First operand 744 states and 1147 transitions. Second operand 4 states. [2019-10-15 01:11:51,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:51,496 INFO L93 Difference]: Finished difference Result 1431 states and 2227 transitions. [2019-10-15 01:11:51,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:51,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-15 01:11:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:51,508 INFO L225 Difference]: With dead ends: 1431 [2019-10-15 01:11:51,508 INFO L226 Difference]: Without dead ends: 744 [2019-10-15 01:11:51,515 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-10-15 01:11:51,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-10-15 01:11:51,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-15 01:11:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1146 transitions. [2019-10-15 01:11:51,557 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1146 transitions. Word has length 125 [2019-10-15 01:11:51,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:51,560 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1146 transitions. [2019-10-15 01:11:51,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1146 transitions. [2019-10-15 01:11:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 01:11:51,570 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:51,570 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:51,570 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:51,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:51,571 INFO L82 PathProgramCache]: Analyzing trace with hash -947447693, now seen corresponding path program 1 times [2019-10-15 01:11:51,571 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:51,572 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862931584] [2019-10-15 01:11:51,572 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:51,572 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:51,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:51,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862931584] [2019-10-15 01:11:51,756 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:51,756 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:51,756 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523821914] [2019-10-15 01:11:51,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:51,758 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:51,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:51,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:51,759 INFO L87 Difference]: Start difference. First operand 744 states and 1146 transitions. Second operand 4 states. [2019-10-15 01:11:51,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:51,828 INFO L93 Difference]: Finished difference Result 1431 states and 2226 transitions. [2019-10-15 01:11:51,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:51,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-15 01:11:51,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:51,843 INFO L225 Difference]: With dead ends: 1431 [2019-10-15 01:11:51,843 INFO L226 Difference]: Without dead ends: 744 [2019-10-15 01:11:51,850 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:51,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-10-15 01:11:51,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-10-15 01:11:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-15 01:11:51,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1145 transitions. [2019-10-15 01:11:51,886 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1145 transitions. Word has length 126 [2019-10-15 01:11:51,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:51,887 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1145 transitions. [2019-10-15 01:11:51,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1145 transitions. [2019-10-15 01:11:51,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-15 01:11:51,892 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:51,892 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:51,892 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:51,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:51,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1830968969, now seen corresponding path program 1 times [2019-10-15 01:11:51,893 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:51,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031805456] [2019-10-15 01:11:51,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:51,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:51,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:52,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031805456] [2019-10-15 01:11:52,048 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:52,048 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:52,048 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349196884] [2019-10-15 01:11:52,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:52,049 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:52,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:52,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:52,050 INFO L87 Difference]: Start difference. First operand 744 states and 1145 transitions. Second operand 4 states. [2019-10-15 01:11:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:52,118 INFO L93 Difference]: Finished difference Result 1431 states and 2225 transitions. [2019-10-15 01:11:52,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:52,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-15 01:11:52,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:52,195 INFO L225 Difference]: With dead ends: 1431 [2019-10-15 01:11:52,195 INFO L226 Difference]: Without dead ends: 744 [2019-10-15 01:11:52,198 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:52,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-10-15 01:11:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-10-15 01:11:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-15 01:11:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1144 transitions. [2019-10-15 01:11:52,223 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1144 transitions. Word has length 127 [2019-10-15 01:11:52,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:52,224 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1144 transitions. [2019-10-15 01:11:52,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1144 transitions. [2019-10-15 01:11:52,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 01:11:52,227 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:52,227 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:52,227 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:52,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:52,228 INFO L82 PathProgramCache]: Analyzing trace with hash -873883217, now seen corresponding path program 1 times [2019-10-15 01:11:52,228 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:52,228 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635392047] [2019-10-15 01:11:52,229 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,229 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:52,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635392047] [2019-10-15 01:11:52,467 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:52,467 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-15 01:11:52,467 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912368827] [2019-10-15 01:11:52,468 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:11:52,468 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:52,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:11:52,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:11:52,469 INFO L87 Difference]: Start difference. First operand 744 states and 1144 transitions. Second operand 11 states. [2019-10-15 01:11:52,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:52,678 INFO L93 Difference]: Finished difference Result 1389 states and 2145 transitions. [2019-10-15 01:11:52,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:11:52,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 128 [2019-10-15 01:11:52,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:52,686 INFO L225 Difference]: With dead ends: 1389 [2019-10-15 01:11:52,686 INFO L226 Difference]: Without dead ends: 753 [2019-10-15 01:11:52,690 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:11:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2019-10-15 01:11:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2019-10-15 01:11:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2019-10-15 01:11:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1153 transitions. [2019-10-15 01:11:52,736 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1153 transitions. Word has length 128 [2019-10-15 01:11:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:52,738 INFO L462 AbstractCegarLoop]: Abstraction has 751 states and 1153 transitions. [2019-10-15 01:11:52,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:11:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1153 transitions. [2019-10-15 01:11:52,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 01:11:52,741 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:52,741 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:52,741 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:52,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:52,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1613236558, now seen corresponding path program 1 times [2019-10-15 01:11:52,742 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:52,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394699695] [2019-10-15 01:11:52,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:52,875 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394699695] [2019-10-15 01:11:52,875 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:52,875 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:52,876 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711926613] [2019-10-15 01:11:52,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:52,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:52,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:52,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:52,878 INFO L87 Difference]: Start difference. First operand 751 states and 1153 transitions. Second operand 4 states. [2019-10-15 01:11:52,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:52,944 INFO L93 Difference]: Finished difference Result 1437 states and 2231 transitions. [2019-10-15 01:11:52,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:52,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2019-10-15 01:11:52,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:52,951 INFO L225 Difference]: With dead ends: 1437 [2019-10-15 01:11:52,951 INFO L226 Difference]: Without dead ends: 738 [2019-10-15 01:11:52,956 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-10-15 01:11:52,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-10-15 01:11:52,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-15 01:11:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1130 transitions. [2019-10-15 01:11:52,994 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1130 transitions. Word has length 128 [2019-10-15 01:11:52,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:52,995 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1130 transitions. [2019-10-15 01:11:52,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1130 transitions. [2019-10-15 01:11:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-15 01:11:52,997 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:52,997 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:52,998 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:52,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1929128491, now seen corresponding path program 1 times [2019-10-15 01:11:52,998 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:52,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874721043] [2019-10-15 01:11:52,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:53,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874721043] [2019-10-15 01:11:53,212 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:53,212 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:53,213 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617001770] [2019-10-15 01:11:53,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:53,213 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:53,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:53,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:53,214 INFO L87 Difference]: Start difference. First operand 738 states and 1130 transitions. Second operand 6 states. [2019-10-15 01:11:53,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:53,459 INFO L93 Difference]: Finished difference Result 1377 states and 2123 transitions. [2019-10-15 01:11:53,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:53,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2019-10-15 01:11:53,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:53,467 INFO L225 Difference]: With dead ends: 1377 [2019-10-15 01:11:53,467 INFO L226 Difference]: Without dead ends: 738 [2019-10-15 01:11:53,475 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-10-15 01:11:53,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-10-15 01:11:53,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-15 01:11:53,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1126 transitions. [2019-10-15 01:11:53,510 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1126 transitions. Word has length 129 [2019-10-15 01:11:53,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:53,510 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1126 transitions. [2019-10-15 01:11:53,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:53,511 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1126 transitions. [2019-10-15 01:11:53,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-15 01:11:53,514 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:53,514 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:53,514 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:53,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:53,515 INFO L82 PathProgramCache]: Analyzing trace with hash 2134384978, now seen corresponding path program 1 times [2019-10-15 01:11:53,515 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:53,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880973288] [2019-10-15 01:11:53,515 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:53,516 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:53,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:53,686 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880973288] [2019-10-15 01:11:53,687 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:53,687 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:53,688 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207637529] [2019-10-15 01:11:53,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:53,689 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:53,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:53,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:53,690 INFO L87 Difference]: Start difference. First operand 738 states and 1126 transitions. Second operand 6 states. [2019-10-15 01:11:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:54,013 INFO L93 Difference]: Finished difference Result 1377 states and 2119 transitions. [2019-10-15 01:11:54,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:54,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-10-15 01:11:54,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:54,021 INFO L225 Difference]: With dead ends: 1377 [2019-10-15 01:11:54,022 INFO L226 Difference]: Without dead ends: 738 [2019-10-15 01:11:54,030 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:54,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-10-15 01:11:54,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-10-15 01:11:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-15 01:11:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1122 transitions. [2019-10-15 01:11:54,074 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1122 transitions. Word has length 130 [2019-10-15 01:11:54,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:54,077 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1122 transitions. [2019-10-15 01:11:54,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:54,077 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1122 transitions. [2019-10-15 01:11:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 01:11:54,088 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:54,088 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:54,089 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:54,089 INFO L82 PathProgramCache]: Analyzing trace with hash -920602288, now seen corresponding path program 1 times [2019-10-15 01:11:54,090 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:54,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230668051] [2019-10-15 01:11:54,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:54,091 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:54,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:54,382 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:54,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230668051] [2019-10-15 01:11:54,383 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:54,383 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:54,383 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410703820] [2019-10-15 01:11:54,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:54,384 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:54,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:54,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:54,385 INFO L87 Difference]: Start difference. First operand 738 states and 1122 transitions. Second operand 6 states. [2019-10-15 01:11:54,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:54,602 INFO L93 Difference]: Finished difference Result 1377 states and 2115 transitions. [2019-10-15 01:11:54,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:54,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2019-10-15 01:11:54,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:54,610 INFO L225 Difference]: With dead ends: 1377 [2019-10-15 01:11:54,611 INFO L226 Difference]: Without dead ends: 738 [2019-10-15 01:11:54,616 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-10-15 01:11:54,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-10-15 01:11:54,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-15 01:11:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1118 transitions. [2019-10-15 01:11:54,652 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1118 transitions. Word has length 131 [2019-10-15 01:11:54,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:54,653 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1118 transitions. [2019-10-15 01:11:54,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:54,653 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1118 transitions. [2019-10-15 01:11:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 01:11:54,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:54,657 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:54,657 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:54,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:54,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1980126672, now seen corresponding path program 1 times [2019-10-15 01:11:54,658 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:54,659 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247360742] [2019-10-15 01:11:54,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:54,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:54,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:54,854 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247360742] [2019-10-15 01:11:54,855 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:54,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:54,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616100208] [2019-10-15 01:11:54,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:54,857 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:54,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:54,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:54,857 INFO L87 Difference]: Start difference. First operand 738 states and 1118 transitions. Second operand 7 states. [2019-10-15 01:11:54,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:54,965 INFO L93 Difference]: Finished difference Result 1377 states and 2111 transitions. [2019-10-15 01:11:54,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:54,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-15 01:11:54,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:54,972 INFO L225 Difference]: With dead ends: 1377 [2019-10-15 01:11:54,972 INFO L226 Difference]: Without dead ends: 717 [2019-10-15 01:11:54,976 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-15 01:11:54,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-10-15 01:11:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-15 01:11:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1084 transitions. [2019-10-15 01:11:55,003 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1084 transitions. Word has length 131 [2019-10-15 01:11:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:55,003 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1084 transitions. [2019-10-15 01:11:55,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1084 transitions. [2019-10-15 01:11:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 01:11:55,006 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:55,006 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:55,007 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:55,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:55,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1963930793, now seen corresponding path program 1 times [2019-10-15 01:11:55,007 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:55,008 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420383290] [2019-10-15 01:11:55,008 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:55,008 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:55,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:55,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420383290] [2019-10-15 01:11:55,154 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:55,154 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:55,155 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279102980] [2019-10-15 01:11:55,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:55,155 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:55,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:55,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:55,156 INFO L87 Difference]: Start difference. First operand 717 states and 1084 transitions. Second operand 6 states. [2019-10-15 01:11:55,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:55,271 INFO L93 Difference]: Finished difference Result 1356 states and 2077 transitions. [2019-10-15 01:11:55,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:55,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2019-10-15 01:11:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:55,278 INFO L225 Difference]: With dead ends: 1356 [2019-10-15 01:11:55,278 INFO L226 Difference]: Without dead ends: 717 [2019-10-15 01:11:55,282 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-15 01:11:55,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-10-15 01:11:55,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-15 01:11:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1083 transitions. [2019-10-15 01:11:55,307 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1083 transitions. Word has length 132 [2019-10-15 01:11:55,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:55,308 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1083 transitions. [2019-10-15 01:11:55,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:55,308 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1083 transitions. [2019-10-15 01:11:55,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 01:11:55,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:55,311 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:55,311 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:55,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:55,312 INFO L82 PathProgramCache]: Analyzing trace with hash -775379851, now seen corresponding path program 1 times [2019-10-15 01:11:55,312 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:55,312 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331691202] [2019-10-15 01:11:55,312 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:55,312 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:55,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:55,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331691202] [2019-10-15 01:11:55,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:55,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:55,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905750399] [2019-10-15 01:11:55,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:55,489 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:55,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:55,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:55,489 INFO L87 Difference]: Start difference. First operand 717 states and 1083 transitions. Second operand 6 states. [2019-10-15 01:11:55,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:55,659 INFO L93 Difference]: Finished difference Result 1356 states and 2076 transitions. [2019-10-15 01:11:55,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:55,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-10-15 01:11:55,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:55,665 INFO L225 Difference]: With dead ends: 1356 [2019-10-15 01:11:55,665 INFO L226 Difference]: Without dead ends: 717 [2019-10-15 01:11:55,669 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:55,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-15 01:11:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-10-15 01:11:55,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-15 01:11:55,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1082 transitions. [2019-10-15 01:11:55,695 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1082 transitions. Word has length 133 [2019-10-15 01:11:55,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:55,695 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1082 transitions. [2019-10-15 01:11:55,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:55,696 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1082 transitions. [2019-10-15 01:11:55,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-15 01:11:55,698 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:55,698 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:55,699 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:55,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:55,699 INFO L82 PathProgramCache]: Analyzing trace with hash -2026224674, now seen corresponding path program 1 times [2019-10-15 01:11:55,699 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:55,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172651408] [2019-10-15 01:11:55,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:55,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:55,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:55,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172651408] [2019-10-15 01:11:55,827 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:55,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:55,828 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439093638] [2019-10-15 01:11:55,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:55,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:55,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:55,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:55,829 INFO L87 Difference]: Start difference. First operand 717 states and 1082 transitions. Second operand 4 states. [2019-10-15 01:11:55,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:55,885 INFO L93 Difference]: Finished difference Result 1356 states and 2075 transitions. [2019-10-15 01:11:55,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:55,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2019-10-15 01:11:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:55,897 INFO L225 Difference]: With dead ends: 1356 [2019-10-15 01:11:55,897 INFO L226 Difference]: Without dead ends: 717 [2019-10-15 01:11:55,901 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:55,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-15 01:11:55,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-10-15 01:11:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-15 01:11:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1081 transitions. [2019-10-15 01:11:55,927 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1081 transitions. Word has length 134 [2019-10-15 01:11:55,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:55,928 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1081 transitions. [2019-10-15 01:11:55,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:55,928 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1081 transitions. [2019-10-15 01:11:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-15 01:11:55,930 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:55,930 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:55,931 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:55,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:55,931 INFO L82 PathProgramCache]: Analyzing trace with hash 881957212, now seen corresponding path program 1 times [2019-10-15 01:11:55,931 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:55,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364253606] [2019-10-15 01:11:55,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:55,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:55,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:56,172 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364253606] [2019-10-15 01:11:56,172 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:56,172 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-15 01:11:56,172 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691239698] [2019-10-15 01:11:56,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-15 01:11:56,173 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:56,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-15 01:11:56,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:11:56,174 INFO L87 Difference]: Start difference. First operand 717 states and 1081 transitions. Second operand 13 states. [2019-10-15 01:11:56,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:56,445 INFO L93 Difference]: Finished difference Result 1357 states and 2074 transitions. [2019-10-15 01:11:56,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 01:11:56,446 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 134 [2019-10-15 01:11:56,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:56,452 INFO L225 Difference]: With dead ends: 1357 [2019-10-15 01:11:56,452 INFO L226 Difference]: Without dead ends: 717 [2019-10-15 01:11:56,456 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:11:56,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-15 01:11:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-10-15 01:11:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-15 01:11:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1080 transitions. [2019-10-15 01:11:56,480 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1080 transitions. Word has length 134 [2019-10-15 01:11:56,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:56,481 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1080 transitions. [2019-10-15 01:11:56,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-15 01:11:56,481 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1080 transitions. [2019-10-15 01:11:56,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 01:11:56,483 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:56,484 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:56,484 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:56,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:56,484 INFO L82 PathProgramCache]: Analyzing trace with hash -301817066, now seen corresponding path program 1 times [2019-10-15 01:11:56,485 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:56,485 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723001962] [2019-10-15 01:11:56,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:56,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:56,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:56,613 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723001962] [2019-10-15 01:11:56,613 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:56,613 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:56,614 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945389385] [2019-10-15 01:11:56,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:56,614 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:56,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:56,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:56,615 INFO L87 Difference]: Start difference. First operand 717 states and 1080 transitions. Second operand 4 states. [2019-10-15 01:11:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:57,856 INFO L93 Difference]: Finished difference Result 2012 states and 3085 transitions. [2019-10-15 01:11:57,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:57,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2019-10-15 01:11:57,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:57,870 INFO L225 Difference]: With dead ends: 2012 [2019-10-15 01:11:57,870 INFO L226 Difference]: Without dead ends: 1381 [2019-10-15 01:11:57,875 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:57,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2019-10-15 01:11:57,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1368. [2019-10-15 01:11:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2019-10-15 01:11:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2074 transitions. [2019-10-15 01:11:57,944 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2074 transitions. Word has length 135 [2019-10-15 01:11:57,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:57,945 INFO L462 AbstractCegarLoop]: Abstraction has 1368 states and 2074 transitions. [2019-10-15 01:11:57,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:57,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2074 transitions. [2019-10-15 01:11:57,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 01:11:57,948 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:57,949 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:57,949 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:57,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:57,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1014149374, now seen corresponding path program 1 times [2019-10-15 01:11:57,950 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:57,950 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780214725] [2019-10-15 01:11:57,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:57,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:57,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:58,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780214725] [2019-10-15 01:11:58,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:58,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:58,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820812578] [2019-10-15 01:11:58,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:58,169 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:58,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:58,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:58,170 INFO L87 Difference]: Start difference. First operand 1368 states and 2074 transitions. Second operand 6 states. [2019-10-15 01:12:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:03,340 INFO L93 Difference]: Finished difference Result 3425 states and 5390 transitions. [2019-10-15 01:12:03,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:12:03,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2019-10-15 01:12:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:03,368 INFO L225 Difference]: With dead ends: 3425 [2019-10-15 01:12:03,368 INFO L226 Difference]: Without dead ends: 2801 [2019-10-15 01:12:03,374 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:12:03,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2019-10-15 01:12:03,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2752. [2019-10-15 01:12:03,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2752 states. [2019-10-15 01:12:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 4348 transitions. [2019-10-15 01:12:03,513 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 4348 transitions. Word has length 136 [2019-10-15 01:12:03,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:03,514 INFO L462 AbstractCegarLoop]: Abstraction has 2752 states and 4348 transitions. [2019-10-15 01:12:03,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:12:03,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 4348 transitions. [2019-10-15 01:12:03,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-15 01:12:03,526 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:03,527 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:03,527 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:03,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:03,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1438060187, now seen corresponding path program 1 times [2019-10-15 01:12:03,528 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:03,528 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529488637] [2019-10-15 01:12:03,528 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:03,528 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:03,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:12:03,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529488637] [2019-10-15 01:12:03,720 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:03,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 01:12:03,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057795977] [2019-10-15 01:12:03,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:12:03,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:03,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:12:03,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:12:03,722 INFO L87 Difference]: Start difference. First operand 2752 states and 4348 transitions. Second operand 9 states. [2019-10-15 01:12:08,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:08,503 INFO L93 Difference]: Finished difference Result 5386 states and 8691 transitions. [2019-10-15 01:12:08,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:12:08,504 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 181 [2019-10-15 01:12:08,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:08,535 INFO L225 Difference]: With dead ends: 5386 [2019-10-15 01:12:08,535 INFO L226 Difference]: Without dead ends: 2776 [2019-10-15 01:12:08,557 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:12:08,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2019-10-15 01:12:08,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2768. [2019-10-15 01:12:08,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2768 states. [2019-10-15 01:12:08,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4428 transitions. [2019-10-15 01:12:08,742 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4428 transitions. Word has length 181 [2019-10-15 01:12:08,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:08,743 INFO L462 AbstractCegarLoop]: Abstraction has 2768 states and 4428 transitions. [2019-10-15 01:12:08,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:12:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4428 transitions. [2019-10-15 01:12:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-15 01:12:08,763 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:08,763 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:08,764 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:08,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:08,764 INFO L82 PathProgramCache]: Analyzing trace with hash 2917670, now seen corresponding path program 1 times [2019-10-15 01:12:08,765 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:08,765 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93218803] [2019-10-15 01:12:08,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:08,766 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:08,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:12:09,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93218803] [2019-10-15 01:12:09,022 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:09,022 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:12:09,022 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087985189] [2019-10-15 01:12:09,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:12:09,023 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:09,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:12:09,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:12:09,024 INFO L87 Difference]: Start difference. First operand 2768 states and 4428 transitions. Second operand 8 states. [2019-10-15 01:12:17,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:17,340 INFO L93 Difference]: Finished difference Result 10376 states and 17239 transitions. [2019-10-15 01:12:17,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 01:12:17,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2019-10-15 01:12:17,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:17,409 INFO L225 Difference]: With dead ends: 10376 [2019-10-15 01:12:17,410 INFO L226 Difference]: Without dead ends: 7750 [2019-10-15 01:12:17,438 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:12:17,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2019-10-15 01:12:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 7676. [2019-10-15 01:12:17,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7676 states. [2019-10-15 01:12:17,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7676 states to 7676 states and 12326 transitions. [2019-10-15 01:12:17,932 INFO L78 Accepts]: Start accepts. Automaton has 7676 states and 12326 transitions. Word has length 182 [2019-10-15 01:12:17,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:17,933 INFO L462 AbstractCegarLoop]: Abstraction has 7676 states and 12326 transitions. [2019-10-15 01:12:17,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:12:17,933 INFO L276 IsEmpty]: Start isEmpty. Operand 7676 states and 12326 transitions. [2019-10-15 01:12:17,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-15 01:12:17,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:17,943 INFO L380 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, 1] [2019-10-15 01:12:17,943 INFO L410 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:17,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:17,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1009565604, now seen corresponding path program 1 times [2019-10-15 01:12:17,944 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:17,944 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094141672] [2019-10-15 01:12:17,945 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:17,945 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:17,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:12:18,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094141672] [2019-10-15 01:12:18,096 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:18,097 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:12:18,097 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717659096] [2019-10-15 01:12:18,097 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:12:18,098 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:18,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:12:18,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:12:18,098 INFO L87 Difference]: Start difference. First operand 7676 states and 12326 transitions. Second operand 6 states. [2019-10-15 01:12:19,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:19,264 INFO L93 Difference]: Finished difference Result 15234 states and 24791 transitions.