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_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:11:16,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:11:16,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:11:16,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:11:16,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:11:16,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:11:16,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:11:16,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:11:16,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:11:16,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:11:16,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:11:16,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:11:16,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:11:16,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:11:16,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:11:16,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:11:16,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:11:16,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:11:16,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:11:16,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:11:16,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:11:16,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:11:16,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:11:16,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:11:16,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:11:16,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:11:16,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:11:16,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:11:16,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:11:16,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:11:16,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:11:16,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:11:16,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:11:16,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:11:16,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:11:16,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:11:16,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:11:16,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:11:16,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:11:16,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:11:16,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:11:16,318 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 01:11:16,346 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:11:16,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:11:16,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:11:16,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:11:16,351 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:11:16,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:11:16,351 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:11:16,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:11:16,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:11:16,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:11:16,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:11:16,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:11:16,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:11:16,353 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:11:16,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:11:16,353 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:11:16,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:11:16,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:11:16,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:11:16,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:11:16,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:11:16,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:11:16,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:11:16,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:11:16,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:11:16,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:11:16,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:11:16,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:11:16,357 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 01:11:16,672 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:11:16,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:11:16,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:11:16,691 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:11:16,691 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:11:16,692 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product30.cil.c [2019-10-15 01:11:16,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9007b22c/d82813ace4734d4884c642fe91dc6cd6/FLAGa15b12be4 [2019-10-15 01:11:17,451 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:11:17,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product30.cil.c [2019-10-15 01:11:17,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9007b22c/d82813ace4734d4884c642fe91dc6cd6/FLAGa15b12be4 [2019-10-15 01:11:17,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9007b22c/d82813ace4734d4884c642fe91dc6cd6 [2019-10-15 01:11:17,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:11:17,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:11:17,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:17,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:11:17,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:11:17,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:17,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79462fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17, skipping insertion in model container [2019-10-15 01:11:17,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:17,626 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:11:17,708 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:11:18,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:18,464 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:11:18,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:18,686 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:11:18,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:18 WrapperNode [2019-10-15 01:11:18,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:18,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:11:18,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:11:18,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:11:18,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:18" (1/1) ... [2019-10-15 01:11:18,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:18" (1/1) ... [2019-10-15 01:11:18,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:18" (1/1) ... [2019-10-15 01:11:18,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:18" (1/1) ... [2019-10-15 01:11:18,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:18" (1/1) ... [2019-10-15 01:11:18,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:18" (1/1) ... [2019-10-15 01:11:18,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:18" (1/1) ... [2019-10-15 01:11:18,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:11:18,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:11:18,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:11:18,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:11:18,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:18" (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 01:11:19,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:11:19,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:11:19,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:19,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:19,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:19,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:19,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:11:19,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:11:19,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:11:19,017 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:11:19,017 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:11:19,018 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:11:19,018 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:11:19,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:11:19,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-15 01:11:19,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-15 01:11:19,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-15 01:11:19,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-15 01:11:19,022 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:11:19,022 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:11:19,022 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:11:19,023 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:11:19,023 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:11:19,023 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:11:19,023 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:11:19,024 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:11:19,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:11:19,024 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:11:19,024 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:11:19,025 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:11:19,025 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 01:11:19,025 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:11:19,025 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:11:19,025 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:11:19,026 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:11:19,026 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:11:19,026 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:11:19,027 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:11:19,027 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:11:19,027 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:11:19,027 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:11:19,027 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:11:19,028 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:11:19,028 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:11:19,028 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:11:19,028 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:11:19,028 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:19,028 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:11:19,029 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:11:19,029 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-15 01:11:19,029 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:11:19,029 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-15 01:11:19,029 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:11:19,030 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:11:19,030 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:11:19,030 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:11:19,030 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:11:19,030 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:11:19,030 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:11:19,031 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:11:19,031 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:11:19,031 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:11:19,031 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:11:19,032 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:11:19,032 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:11:19,032 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:11:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:11:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:11:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:11:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:11:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:11:19,034 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:11:19,034 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:11:19,035 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:11:19,035 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:11:19,035 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:11:19,035 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:11:19,036 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:11:19,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:11:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:11:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:11:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:11:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:11:19,038 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:11:19,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:11:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:11:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:11:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:11:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:11:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:11:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:11:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:11:19,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:11:19,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:11:19,042 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:11:19,042 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:11:19,042 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:11:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:11:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:11:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:11:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:11:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:11:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-15 01:11:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-15 01:11:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-15 01:11:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-15 01:11:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:11:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:11:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:11:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:11:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:11:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:11:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:11:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:11:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:11:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:11:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:11:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:11:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:11:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:11:19,049 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:11:19,049 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:11:19,049 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:11:19,049 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:11:19,050 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:11:19,050 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:11:19,050 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:11:19,050 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:11:19,051 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:11:19,051 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:11:19,051 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:11:19,051 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:11:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:11:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 01:11:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:11:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:11:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:11:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:11:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:11:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:11:19,064 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:11:19,064 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:11:19,064 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:11:19,064 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:19,065 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:11:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:11:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-15 01:11:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-15 01:11:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:11:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:11:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:11:19,066 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:11:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:11:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:11:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:11:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:11:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:11:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:11:19,067 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:11:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:11:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:11:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:11:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:11:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:11:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:11:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:11:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:11:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:11:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:11:21,977 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:11:21,977 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:11:21,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:21 BoogieIcfgContainer [2019-10-15 01:11:21,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:11:21,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:11:21,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:11:21,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:11:21,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:11:17" (1/3) ... [2019-10-15 01:11:21,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2d59fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:21, skipping insertion in model container [2019-10-15 01:11:21,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:18" (2/3) ... [2019-10-15 01:11:21,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2d59fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:21, skipping insertion in model container [2019-10-15 01:11:21,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:21" (3/3) ... [2019-10-15 01:11:21,989 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product30.cil.c [2019-10-15 01:11:22,000 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:11:22,011 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:11:22,023 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:11:22,105 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:11:22,105 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:11:22,106 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:11:22,106 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:11:22,106 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:11:22,106 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:11:22,106 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:11:22,106 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:11:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states. [2019-10-15 01:11:22,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-15 01:11:22,180 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:22,182 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:22,185 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:22,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:22,193 INFO L82 PathProgramCache]: Analyzing trace with hash 236945449, now seen corresponding path program 1 times [2019-10-15 01:11:22,204 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:22,204 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841790932] [2019-10-15 01:11:22,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,205 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:22,911 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841790932] [2019-10-15 01:11:22,912 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:22,913 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:22,913 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485437618] [2019-10-15 01:11:22,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:22,922 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:22,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:22,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:22,941 INFO L87 Difference]: Start difference. First operand 796 states. Second operand 4 states. [2019-10-15 01:11:23,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:23,171 INFO L93 Difference]: Finished difference Result 1241 states and 1999 transitions. [2019-10-15 01:11:23,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:23,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2019-10-15 01:11:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:23,199 INFO L225 Difference]: With dead ends: 1241 [2019-10-15 01:11:23,199 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:11:23,218 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 01:11:23,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:11:23,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-15 01:11:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-15 01:11:23,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1001 transitions. [2019-10-15 01:11:23,369 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1001 transitions. Word has length 87 [2019-10-15 01:11:23,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:23,370 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1001 transitions. [2019-10-15 01:11:23,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:23,371 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1001 transitions. [2019-10-15 01:11:23,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-15 01:11:23,379 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:23,379 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:23,380 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:23,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:23,381 INFO L82 PathProgramCache]: Analyzing trace with hash -217065445, now seen corresponding path program 1 times [2019-10-15 01:11:23,381 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:23,382 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550608336] [2019-10-15 01:11:23,382 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,382 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:23,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550608336] [2019-10-15 01:11:23,671 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:23,671 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:23,671 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146917664] [2019-10-15 01:11:23,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:23,676 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:23,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:23,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:23,677 INFO L87 Difference]: Start difference. First operand 629 states and 1001 transitions. Second operand 4 states. [2019-10-15 01:11:23,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:23,761 INFO L93 Difference]: Finished difference Result 1221 states and 1960 transitions. [2019-10-15 01:11:23,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:23,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-10-15 01:11:23,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:23,771 INFO L225 Difference]: With dead ends: 1221 [2019-10-15 01:11:23,772 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:11:23,775 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 01:11:23,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:11:23,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-15 01:11:23,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-15 01:11:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1000 transitions. [2019-10-15 01:11:23,805 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1000 transitions. Word has length 90 [2019-10-15 01:11:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:23,806 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1000 transitions. [2019-10-15 01:11:23,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1000 transitions. [2019-10-15 01:11:23,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-15 01:11:23,808 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:23,809 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:23,809 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:23,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:23,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1176241356, now seen corresponding path program 1 times [2019-10-15 01:11:23,810 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:23,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367143179] [2019-10-15 01:11:23,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:23,955 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367143179] [2019-10-15 01:11:23,955 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:23,955 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:23,955 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544163476] [2019-10-15 01:11:23,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:23,956 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:23,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:23,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:23,957 INFO L87 Difference]: Start difference. First operand 629 states and 1000 transitions. Second operand 4 states. [2019-10-15 01:11:24,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:24,026 INFO L93 Difference]: Finished difference Result 1221 states and 1959 transitions. [2019-10-15 01:11:24,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:24,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-10-15 01:11:24,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:24,032 INFO L225 Difference]: With dead ends: 1221 [2019-10-15 01:11:24,032 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:11:24,035 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 01:11:24,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:11:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-15 01:11:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-15 01:11:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 999 transitions. [2019-10-15 01:11:24,062 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 999 transitions. Word has length 91 [2019-10-15 01:11:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:24,063 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 999 transitions. [2019-10-15 01:11:24,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:24,063 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 999 transitions. [2019-10-15 01:11:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 01:11:24,065 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:24,065 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:24,065 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:24,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:24,066 INFO L82 PathProgramCache]: Analyzing trace with hash 21534647, now seen corresponding path program 1 times [2019-10-15 01:11:24,066 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:24,066 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739650817] [2019-10-15 01:11:24,066 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:24,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:24,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739650817] [2019-10-15 01:11:24,188 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:24,188 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:24,188 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494267330] [2019-10-15 01:11:24,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:24,189 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:24,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:24,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:24,190 INFO L87 Difference]: Start difference. First operand 629 states and 999 transitions. Second operand 4 states. [2019-10-15 01:11:24,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:24,245 INFO L93 Difference]: Finished difference Result 1221 states and 1958 transitions. [2019-10-15 01:11:24,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:24,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-10-15 01:11:24,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:24,251 INFO L225 Difference]: With dead ends: 1221 [2019-10-15 01:11:24,252 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:11:24,255 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 01:11:24,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:11:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-15 01:11:24,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-15 01:11:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 998 transitions. [2019-10-15 01:11:24,281 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 998 transitions. Word has length 92 [2019-10-15 01:11:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:24,282 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 998 transitions. [2019-10-15 01:11:24,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:24,282 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 998 transitions. [2019-10-15 01:11:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 01:11:24,284 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:24,284 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:24,285 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:24,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:24,285 INFO L82 PathProgramCache]: Analyzing trace with hash -634656752, now seen corresponding path program 1 times [2019-10-15 01:11:24,286 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:24,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572052464] [2019-10-15 01:11:24,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:24,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:24,481 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572052464] [2019-10-15 01:11:24,482 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:24,482 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:24,482 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465310630] [2019-10-15 01:11:24,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:24,483 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:24,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:24,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:24,484 INFO L87 Difference]: Start difference. First operand 629 states and 998 transitions. Second operand 4 states. [2019-10-15 01:11:24,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:24,566 INFO L93 Difference]: Finished difference Result 1221 states and 1957 transitions. [2019-10-15 01:11:24,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:24,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-10-15 01:11:24,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:24,584 INFO L225 Difference]: With dead ends: 1221 [2019-10-15 01:11:24,584 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:11:24,591 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 01:11:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:11:24,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-15 01:11:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-15 01:11:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 997 transitions. [2019-10-15 01:11:24,625 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 997 transitions. Word has length 93 [2019-10-15 01:11:24,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:24,626 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 997 transitions. [2019-10-15 01:11:24,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:24,631 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 997 transitions. [2019-10-15 01:11:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:11:24,634 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:24,634 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:24,635 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:24,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:24,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1365704531, now seen corresponding path program 1 times [2019-10-15 01:11:24,636 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:24,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678761892] [2019-10-15 01:11:24,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:24,850 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678761892] [2019-10-15 01:11:24,851 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:24,851 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:11:24,851 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123287494] [2019-10-15 01:11:24,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:11:24,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:24,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:11:24,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:24,853 INFO L87 Difference]: Start difference. First operand 629 states and 997 transitions. Second operand 10 states. [2019-10-15 01:11:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:25,022 INFO L93 Difference]: Finished difference Result 1179 states and 1877 transitions. [2019-10-15 01:11:25,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:11:25,023 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2019-10-15 01:11:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:25,029 INFO L225 Difference]: With dead ends: 1179 [2019-10-15 01:11:25,029 INFO L226 Difference]: Without dead ends: 638 [2019-10-15 01:11:25,032 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:11:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2019-10-15 01:11:25,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 636. [2019-10-15 01:11:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-10-15 01:11:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1006 transitions. [2019-10-15 01:11:25,060 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1006 transitions. Word has length 94 [2019-10-15 01:11:25,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:25,060 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 1006 transitions. [2019-10-15 01:11:25,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:11:25,061 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1006 transitions. [2019-10-15 01:11:25,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:11:25,063 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:25,063 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:25,063 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:25,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:25,064 INFO L82 PathProgramCache]: Analyzing trace with hash -564914574, now seen corresponding path program 1 times [2019-10-15 01:11:25,064 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:25,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825930987] [2019-10-15 01:11:25,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,065 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:25,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825930987] [2019-10-15 01:11:25,227 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:25,227 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:25,228 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067204794] [2019-10-15 01:11:25,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:25,229 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:25,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:25,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:25,229 INFO L87 Difference]: Start difference. First operand 636 states and 1006 transitions. Second operand 4 states. [2019-10-15 01:11:25,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:25,283 INFO L93 Difference]: Finished difference Result 1227 states and 1963 transitions. [2019-10-15 01:11:25,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:25,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-15 01:11:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:25,288 INFO L225 Difference]: With dead ends: 1227 [2019-10-15 01:11:25,289 INFO L226 Difference]: Without dead ends: 623 [2019-10-15 01:11:25,292 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 01:11:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-15 01:11:25,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-15 01:11:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-15 01:11:25,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 983 transitions. [2019-10-15 01:11:25,312 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 983 transitions. Word has length 94 [2019-10-15 01:11:25,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:25,312 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 983 transitions. [2019-10-15 01:11:25,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:25,312 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 983 transitions. [2019-10-15 01:11:25,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:11:25,314 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:25,314 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:25,315 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:25,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:25,315 INFO L82 PathProgramCache]: Analyzing trace with hash -811237728, now seen corresponding path program 1 times [2019-10-15 01:11:25,315 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:25,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805903181] [2019-10-15 01:11:25,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:25,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805903181] [2019-10-15 01:11:25,444 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:25,444 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:25,445 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264788046] [2019-10-15 01:11:25,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:25,445 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:25,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:25,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:25,446 INFO L87 Difference]: Start difference. First operand 623 states and 983 transitions. Second operand 6 states. [2019-10-15 01:11:25,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:25,666 INFO L93 Difference]: Finished difference Result 1167 states and 1855 transitions. [2019-10-15 01:11:25,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:25,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-10-15 01:11:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:25,671 INFO L225 Difference]: With dead ends: 1167 [2019-10-15 01:11:25,671 INFO L226 Difference]: Without dead ends: 623 [2019-10-15 01:11:25,674 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 01:11:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-15 01:11:25,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-15 01:11:25,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-15 01:11:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 979 transitions. [2019-10-15 01:11:25,696 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 979 transitions. Word has length 95 [2019-10-15 01:11:25,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:25,697 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 979 transitions. [2019-10-15 01:11:25,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:25,697 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 979 transitions. [2019-10-15 01:11:25,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:11:25,699 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:25,699 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:25,699 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:25,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:25,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1457329514, now seen corresponding path program 1 times [2019-10-15 01:11:25,700 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:25,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179938384] [2019-10-15 01:11:25,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:25,849 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179938384] [2019-10-15 01:11:25,850 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:25,850 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:25,851 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515242473] [2019-10-15 01:11:25,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:25,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:25,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:25,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:25,853 INFO L87 Difference]: Start difference. First operand 623 states and 979 transitions. Second operand 6 states. [2019-10-15 01:11:26,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:26,152 INFO L93 Difference]: Finished difference Result 1167 states and 1851 transitions. [2019-10-15 01:11:26,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:26,153 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-10-15 01:11:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:26,158 INFO L225 Difference]: With dead ends: 1167 [2019-10-15 01:11:26,158 INFO L226 Difference]: Without dead ends: 623 [2019-10-15 01:11:26,161 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 01:11:26,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-15 01:11:26,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-15 01:11:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-15 01:11:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 975 transitions. [2019-10-15 01:11:26,200 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 975 transitions. Word has length 96 [2019-10-15 01:11:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:26,202 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 975 transitions. [2019-10-15 01:11:26,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 975 transitions. [2019-10-15 01:11:26,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:11:26,204 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:26,204 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:26,205 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:26,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:26,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1359647269, now seen corresponding path program 1 times [2019-10-15 01:11:26,205 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:26,205 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67289495] [2019-10-15 01:11:26,206 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,206 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:26,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67289495] [2019-10-15 01:11:26,340 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:26,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:26,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090663923] [2019-10-15 01:11:26,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:26,342 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:26,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:26,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:26,343 INFO L87 Difference]: Start difference. First operand 623 states and 975 transitions. Second operand 6 states. [2019-10-15 01:11:26,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:26,563 INFO L93 Difference]: Finished difference Result 1167 states and 1847 transitions. [2019-10-15 01:11:26,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:26,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-15 01:11:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:26,569 INFO L225 Difference]: With dead ends: 1167 [2019-10-15 01:11:26,569 INFO L226 Difference]: Without dead ends: 623 [2019-10-15 01:11:26,572 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 01:11:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-15 01:11:26,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-15 01:11:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-15 01:11:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 971 transitions. [2019-10-15 01:11:26,594 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 971 transitions. Word has length 97 [2019-10-15 01:11:26,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:26,594 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 971 transitions. [2019-10-15 01:11:26,594 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 971 transitions. [2019-10-15 01:11:26,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:11:26,596 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:26,596 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:26,597 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:26,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:26,597 INFO L82 PathProgramCache]: Analyzing trace with hash -969773403, now seen corresponding path program 1 times [2019-10-15 01:11:26,597 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:26,597 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251997890] [2019-10-15 01:11:26,598 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,598 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:26,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:26,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251997890] [2019-10-15 01:11:26,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:26,718 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:26,718 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107296098] [2019-10-15 01:11:26,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:26,719 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:26,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:26,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:26,719 INFO L87 Difference]: Start difference. First operand 623 states and 971 transitions. Second operand 7 states. [2019-10-15 01:11:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:26,798 INFO L93 Difference]: Finished difference Result 1167 states and 1843 transitions. [2019-10-15 01:11:26,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:26,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-10-15 01:11:26,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:26,804 INFO L225 Difference]: With dead ends: 1167 [2019-10-15 01:11:26,804 INFO L226 Difference]: Without dead ends: 602 [2019-10-15 01:11:26,807 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 01:11:26,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-15 01:11:26,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-10-15 01:11:26,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-10-15 01:11:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 937 transitions. [2019-10-15 01:11:26,827 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 937 transitions. Word has length 97 [2019-10-15 01:11:26,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:26,827 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 937 transitions. [2019-10-15 01:11:26,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:26,827 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 937 transitions. [2019-10-15 01:11:26,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 01:11:26,829 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:26,829 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:26,830 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:26,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:26,830 INFO L82 PathProgramCache]: Analyzing trace with hash -137400005, now seen corresponding path program 1 times [2019-10-15 01:11:26,830 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:26,830 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7933780] [2019-10-15 01:11:26,830 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,831 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:27,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7933780] [2019-10-15 01:11:27,023 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:27,023 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:27,023 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824061926] [2019-10-15 01:11:27,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:27,024 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:27,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:27,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:27,024 INFO L87 Difference]: Start difference. First operand 602 states and 937 transitions. Second operand 6 states. [2019-10-15 01:11:27,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:27,128 INFO L93 Difference]: Finished difference Result 1146 states and 1809 transitions. [2019-10-15 01:11:27,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:27,129 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-10-15 01:11:27,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:27,133 INFO L225 Difference]: With dead ends: 1146 [2019-10-15 01:11:27,134 INFO L226 Difference]: Without dead ends: 602 [2019-10-15 01:11:27,137 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 01:11:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-15 01:11:27,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-10-15 01:11:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-10-15 01:11:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 936 transitions. [2019-10-15 01:11:27,158 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 936 transitions. Word has length 98 [2019-10-15 01:11:27,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:27,160 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 936 transitions. [2019-10-15 01:11:27,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 936 transitions. [2019-10-15 01:11:27,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 01:11:27,161 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:27,162 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:27,162 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:27,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:27,162 INFO L82 PathProgramCache]: Analyzing trace with hash 2069760426, now seen corresponding path program 1 times [2019-10-15 01:11:27,163 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:27,163 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117433247] [2019-10-15 01:11:27,163 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:27,163 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:27,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:27,290 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117433247] [2019-10-15 01:11:27,290 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:27,291 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:27,291 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858049526] [2019-10-15 01:11:27,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:27,292 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:27,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:27,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:27,292 INFO L87 Difference]: Start difference. First operand 602 states and 936 transitions. Second operand 6 states. [2019-10-15 01:11:27,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:27,385 INFO L93 Difference]: Finished difference Result 1146 states and 1808 transitions. [2019-10-15 01:11:27,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:27,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-10-15 01:11:27,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:27,390 INFO L225 Difference]: With dead ends: 1146 [2019-10-15 01:11:27,390 INFO L226 Difference]: Without dead ends: 602 [2019-10-15 01:11:27,394 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 01:11:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-15 01:11:27,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-10-15 01:11:27,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-10-15 01:11:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 935 transitions. [2019-10-15 01:11:27,414 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 935 transitions. Word has length 99 [2019-10-15 01:11:27,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:27,414 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 935 transitions. [2019-10-15 01:11:27,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 935 transitions. [2019-10-15 01:11:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 01:11:27,416 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:27,416 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:27,416 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:27,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:27,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1151724576, now seen corresponding path program 1 times [2019-10-15 01:11:27,417 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:27,417 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654672568] [2019-10-15 01:11:27,417 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:27,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:27,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:27,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654672568] [2019-10-15 01:11:27,630 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:27,630 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:11:27,630 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135670846] [2019-10-15 01:11:27,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:11:27,631 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:27,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:11:27,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:11:27,631 INFO L87 Difference]: Start difference. First operand 602 states and 935 transitions. Second operand 12 states. [2019-10-15 01:11:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:27,849 INFO L93 Difference]: Finished difference Result 1147 states and 1807 transitions. [2019-10-15 01:11:27,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:11:27,850 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2019-10-15 01:11:27,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:27,857 INFO L225 Difference]: With dead ends: 1147 [2019-10-15 01:11:27,857 INFO L226 Difference]: Without dead ends: 602 [2019-10-15 01:11:27,862 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:11:27,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-15 01:11:27,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-10-15 01:11:27,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-10-15 01:11:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 934 transitions. [2019-10-15 01:11:27,890 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 934 transitions. Word has length 100 [2019-10-15 01:11:27,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:27,891 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 934 transitions. [2019-10-15 01:11:27,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:11:27,892 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 934 transitions. [2019-10-15 01:11:27,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 01:11:27,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:27,895 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:27,895 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:27,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:27,896 INFO L82 PathProgramCache]: Analyzing trace with hash 196339579, now seen corresponding path program 1 times [2019-10-15 01:11:27,896 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:27,896 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920001966] [2019-10-15 01:11:27,897 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:27,897 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:27,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:28,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920001966] [2019-10-15 01:11:28,206 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:28,206 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:11:28,206 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852596033] [2019-10-15 01:11:28,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:11:28,207 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:28,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:11:28,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:28,208 INFO L87 Difference]: Start difference. First operand 602 states and 934 transitions. Second operand 10 states. [2019-10-15 01:11:34,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:34,787 INFO L93 Difference]: Finished difference Result 1776 states and 2866 transitions. [2019-10-15 01:11:34,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:11:34,789 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2019-10-15 01:11:34,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:34,800 INFO L225 Difference]: With dead ends: 1776 [2019-10-15 01:11:34,800 INFO L226 Difference]: Without dead ends: 1240 [2019-10-15 01:11:34,804 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:11:34,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2019-10-15 01:11:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1210. [2019-10-15 01:11:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2019-10-15 01:11:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1927 transitions. [2019-10-15 01:11:34,874 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1927 transitions. Word has length 101 [2019-10-15 01:11:34,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:34,874 INFO L462 AbstractCegarLoop]: Abstraction has 1210 states and 1927 transitions. [2019-10-15 01:11:34,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:11:34,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1927 transitions. [2019-10-15 01:11:34,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-15 01:11:34,876 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:34,877 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:34,877 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:34,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:34,878 INFO L82 PathProgramCache]: Analyzing trace with hash 994116260, now seen corresponding path program 1 times [2019-10-15 01:11:34,878 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:34,878 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266253441] [2019-10-15 01:11:34,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:34,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:34,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:35,067 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266253441] [2019-10-15 01:11:35,069 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:35,070 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:11:35,070 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802741518] [2019-10-15 01:11:35,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:11:35,072 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:35,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:11:35,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:35,073 INFO L87 Difference]: Start difference. First operand 1210 states and 1927 transitions. Second operand 10 states. [2019-10-15 01:11:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:41,816 INFO L93 Difference]: Finished difference Result 3773 states and 6220 transitions. [2019-10-15 01:11:41,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:11:41,817 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2019-10-15 01:11:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:41,837 INFO L225 Difference]: With dead ends: 3773 [2019-10-15 01:11:41,837 INFO L226 Difference]: Without dead ends: 2629 [2019-10-15 01:11:41,846 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:11:41,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2019-10-15 01:11:41,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2588. [2019-10-15 01:11:41,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2588 states. [2019-10-15 01:11:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 4209 transitions. [2019-10-15 01:11:41,975 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 4209 transitions. Word has length 102 [2019-10-15 01:11:41,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:41,975 INFO L462 AbstractCegarLoop]: Abstraction has 2588 states and 4209 transitions. [2019-10-15 01:11:41,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:11:41,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 4209 transitions. [2019-10-15 01:11:41,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-15 01:11:41,977 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:41,978 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:41,978 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:41,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:41,978 INFO L82 PathProgramCache]: Analyzing trace with hash 800793247, now seen corresponding path program 1 times [2019-10-15 01:11:41,979 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:41,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013393722] [2019-10-15 01:11:41,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:41,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:41,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:42,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013393722] [2019-10-15 01:11:42,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:42,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:11:42,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931768741] [2019-10-15 01:11:42,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:11:42,134 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:42,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:11:42,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:42,134 INFO L87 Difference]: Start difference. First operand 2588 states and 4209 transitions. Second operand 10 states. [2019-10-15 01:11:48,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:48,796 INFO L93 Difference]: Finished difference Result 8393 states and 14151 transitions. [2019-10-15 01:11:48,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:11:48,797 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2019-10-15 01:11:48,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:48,847 INFO L225 Difference]: With dead ends: 8393 [2019-10-15 01:11:48,847 INFO L226 Difference]: Without dead ends: 5871 [2019-10-15 01:11:48,870 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:11:48,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5871 states. [2019-10-15 01:11:49,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5871 to 5808. [2019-10-15 01:11:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5808 states. [2019-10-15 01:11:49,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 9647 transitions. [2019-10-15 01:11:49,283 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 9647 transitions. Word has length 103 [2019-10-15 01:11:49,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:49,284 INFO L462 AbstractCegarLoop]: Abstraction has 5808 states and 9647 transitions. [2019-10-15 01:11:49,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:11:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 9647 transitions. [2019-10-15 01:11:49,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-15 01:11:49,285 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:49,286 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:49,286 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:49,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:49,286 INFO L82 PathProgramCache]: Analyzing trace with hash -51849208, now seen corresponding path program 1 times [2019-10-15 01:11:49,287 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:49,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383913296] [2019-10-15 01:11:49,287 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:49,287 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:49,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:49,477 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383913296] [2019-10-15 01:11:49,477 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:49,478 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:11:49,478 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128616753] [2019-10-15 01:11:49,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:11:49,478 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:49,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:11:49,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:49,479 INFO L87 Difference]: Start difference. First operand 5808 states and 9647 transitions. Second operand 10 states.