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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec9_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:05:25,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:05:25,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:05:25,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:05:25,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:05:25,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:05:25,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:05:25,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:05:25,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:05:25,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:05:25,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:05:25,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:05:25,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:05:25,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:05:25,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:05:25,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:05:25,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:05:25,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:05:25,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:05:25,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:05:25,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:05:25,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:05:25,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:05:25,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:05:25,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:05:25,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:05:25,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:05:25,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:05:25,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:05:25,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:05:25,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:05:25,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:05:25,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:05:25,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:05:25,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:05:25,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:05:25,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:05:25,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:05:25,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:05:25,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:05:25,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:05:25,368 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:05:25,394 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:05:25,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:05:25,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:05:25,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:05:25,397 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:05:25,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:05:25,398 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:05:25,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:05:25,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:05:25,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:05:25,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:05:25,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:05:25,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:05:25,399 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:05:25,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:05:25,399 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:05:25,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:05:25,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:05:25,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:05:25,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:05:25,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:05:25,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:25,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:05:25,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:05:25,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:05:25,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:05:25,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:05:25,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:05:25,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:05:25,679 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:05:25,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:05:25,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:05:25,702 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:05:25,702 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:05:25,703 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product28.cil.c [2019-10-13 23:05:25,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/135e94e7d/940756fbd6334099983d23275d4a5ef2/FLAGdcc1c9c92 [2019-10-13 23:05:26,408 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:05:26,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product28.cil.c [2019-10-13 23:05:26,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/135e94e7d/940756fbd6334099983d23275d4a5ef2/FLAGdcc1c9c92 [2019-10-13 23:05:26,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/135e94e7d/940756fbd6334099983d23275d4a5ef2 [2019-10-13 23:05:26,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:05:26,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:05:26,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:26,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:05:26,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:05:26,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:26" (1/1) ... [2019-10-13 23:05:26,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60aa197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:26, skipping insertion in model container [2019-10-13 23:05:26,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:26" (1/1) ... [2019-10-13 23:05:26,676 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:05:26,748 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:05:27,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:27,571 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:05:27,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:27,794 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:05:27,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:27 WrapperNode [2019-10-13 23:05:27,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:27,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:05:27,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:05:27,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:05:27,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:27" (1/1) ... [2019-10-13 23:05:27,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:27" (1/1) ... [2019-10-13 23:05:27,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:27" (1/1) ... [2019-10-13 23:05:27,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:27" (1/1) ... [2019-10-13 23:05:27,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:27" (1/1) ... [2019-10-13 23:05:27,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:27" (1/1) ... [2019-10-13 23:05:27,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:27" (1/1) ... [2019-10-13 23:05:27,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:05:27,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:05:27,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:05:27,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:05:27,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:28,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:05:28,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:05:28,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:28,068 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:05:28,068 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:05:28,069 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:05:28,069 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:05:28,069 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:05:28,069 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:05:28,070 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:05:28,070 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:05:28,070 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:05:28,070 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:05:28,070 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:05:28,071 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:05:28,071 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:05:28,071 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:05:28,071 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:05:28,072 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:05:28,072 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:05:28,073 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:05:28,073 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:05:28,073 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:05:28,073 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:05:28,073 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:05:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:05:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:05:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:05:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:05:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:05:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:05:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:05:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:05:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:05:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:05:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:05:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:05:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:05:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:05:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 23:05:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:05:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 23:05:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:05:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:05:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:05:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:05:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:05:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:05:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:05:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:05:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:05:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:05:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:05:28,082 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:05:28,082 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:05:28,082 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:05:28,082 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:05:28,083 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:05:28,083 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:05:28,083 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:05:28,083 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:05:28,083 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:05:28,084 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:05:28,084 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:05:28,084 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:05:28,084 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:05:28,085 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:05:28,085 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:05:28,085 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:05:28,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:05:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:05:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:05:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:05:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:05:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:05:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:05:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:05:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:05:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:05:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:05:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:05:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:05:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:05:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:05:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:05:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:05:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:05:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:05:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:05:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:05:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:05:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:05:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:05:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:05:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:05:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:05:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:05:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:05:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:05:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:05:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:05:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:05:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:05:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:05:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:05:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:05:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:05:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:05:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:05:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:05:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:05:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:05:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:05:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 23:05:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 23:05:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:05:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:05:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:05:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:05:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:05:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:05:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:05:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:05:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:05:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:05:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:05:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:05:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:05:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:05:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:05:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:05:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:05:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:05:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:05:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:05:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:05:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:05:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:05:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:05:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:05:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:05:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:05:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:05:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:05:28,102 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:05:28,102 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:05:28,102 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:05:28,102 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:05:28,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:05:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:05:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:05:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:05:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:05:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:05:33,208 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:05:33,208 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:05:33,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:33 BoogieIcfgContainer [2019-10-13 23:05:33,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:05:33,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:05:33,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:05:33,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:05:33,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:05:26" (1/3) ... [2019-10-13 23:05:33,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd8073d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:33, skipping insertion in model container [2019-10-13 23:05:33,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:27" (2/3) ... [2019-10-13 23:05:33,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd8073d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:33, skipping insertion in model container [2019-10-13 23:05:33,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:33" (3/3) ... [2019-10-13 23:05:33,219 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product28.cil.c [2019-10-13 23:05:33,229 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:05:33,238 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:05:33,250 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:05:33,281 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:05:33,282 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:05:33,282 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:05:33,282 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:05:33,282 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:05:33,282 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:05:33,282 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:05:33,283 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:05:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states. [2019-10-13 23:05:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 23:05:33,329 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:33,330 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] [2019-10-13 23:05:33,332 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:33,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:33,338 INFO L82 PathProgramCache]: Analyzing trace with hash -142911324, now seen corresponding path program 1 times [2019-10-13 23:05:33,348 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:33,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772512002] [2019-10-13 23:05:33,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:33,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:33,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:33,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772512002] [2019-10-13 23:05:33,871 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:33,872 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:05:33,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321644273] [2019-10-13 23:05:33,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:05:33,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:33,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:05:33,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:05:33,895 INFO L87 Difference]: Start difference. First operand 582 states. Second operand 2 states. [2019-10-13 23:05:33,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:33,965 INFO L93 Difference]: Finished difference Result 479 states and 707 transitions. [2019-10-13 23:05:33,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:05:33,968 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-13 23:05:33,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:34,008 INFO L225 Difference]: With dead ends: 479 [2019-10-13 23:05:34,008 INFO L226 Difference]: Without dead ends: 445 [2019-10-13 23:05:34,017 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:05:34,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-10-13 23:05:34,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2019-10-13 23:05:34,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-10-13 23:05:34,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 656 transitions. [2019-10-13 23:05:34,148 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 656 transitions. Word has length 74 [2019-10-13 23:05:34,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:34,151 INFO L462 AbstractCegarLoop]: Abstraction has 445 states and 656 transitions. [2019-10-13 23:05:34,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:05:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 656 transitions. [2019-10-13 23:05:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-13 23:05:34,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:34,156 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] [2019-10-13 23:05:34,157 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:34,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1370699530, now seen corresponding path program 1 times [2019-10-13 23:05:34,157 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:34,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232126837] [2019-10-13 23:05:34,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:34,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:34,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:34,580 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-10-13 23:05:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:34,597 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232126837] [2019-10-13 23:05:34,597 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:34,598 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:05:34,598 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380527855] [2019-10-13 23:05:34,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:05:34,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:34,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:05:34,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:05:34,606 INFO L87 Difference]: Start difference. First operand 445 states and 656 transitions. Second operand 6 states. [2019-10-13 23:05:37,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:37,962 INFO L93 Difference]: Finished difference Result 1350 states and 2056 transitions. [2019-10-13 23:05:37,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:05:37,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-10-13 23:05:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:37,972 INFO L225 Difference]: With dead ends: 1350 [2019-10-13 23:05:37,972 INFO L226 Difference]: Without dead ends: 947 [2019-10-13 23:05:37,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:05:37,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2019-10-13 23:05:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 852. [2019-10-13 23:05:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2019-10-13 23:05:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1298 transitions. [2019-10-13 23:05:38,058 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1298 transitions. Word has length 75 [2019-10-13 23:05:38,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:38,059 INFO L462 AbstractCegarLoop]: Abstraction has 852 states and 1298 transitions. [2019-10-13 23:05:38,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:05:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1298 transitions. [2019-10-13 23:05:38,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 23:05:38,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:38,069 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:38,069 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:38,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:38,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1887671256, now seen corresponding path program 1 times [2019-10-13 23:05:38,070 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:38,070 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499709960] [2019-10-13 23:05:38,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,071 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:38,345 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499709960] [2019-10-13 23:05:38,345 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:38,345 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:05:38,345 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445446084] [2019-10-13 23:05:38,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:05:38,348 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:38,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:05:38,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:38,349 INFO L87 Difference]: Start difference. First operand 852 states and 1298 transitions. Second operand 12 states. [2019-10-13 23:05:45,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:45,978 INFO L93 Difference]: Finished difference Result 2573 states and 3928 transitions. [2019-10-13 23:05:45,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 23:05:45,979 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2019-10-13 23:05:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:46,003 INFO L225 Difference]: With dead ends: 2573 [2019-10-13 23:05:46,004 INFO L226 Difference]: Without dead ends: 1763 [2019-10-13 23:05:46,015 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-13 23:05:46,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2019-10-13 23:05:46,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1704. [2019-10-13 23:05:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2019-10-13 23:05:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2577 transitions. [2019-10-13 23:05:46,187 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2577 transitions. Word has length 122 [2019-10-13 23:05:46,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:46,188 INFO L462 AbstractCegarLoop]: Abstraction has 1704 states and 2577 transitions. [2019-10-13 23:05:46,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:05:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2577 transitions. [2019-10-13 23:05:46,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 23:05:46,198 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:46,198 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:46,198 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:46,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:46,199 INFO L82 PathProgramCache]: Analyzing trace with hash 525588367, now seen corresponding path program 1 times [2019-10-13 23:05:46,199 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:46,199 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010412166] [2019-10-13 23:05:46,200 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:46,200 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:46,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:46,437 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010412166] [2019-10-13 23:05:46,437 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:46,437 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:46,437 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603010137] [2019-10-13 23:05:46,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:46,438 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:46,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:46,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:46,438 INFO L87 Difference]: Start difference. First operand 1704 states and 2577 transitions. Second operand 3 states. [2019-10-13 23:05:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:46,661 INFO L93 Difference]: Finished difference Result 4294 states and 6600 transitions. [2019-10-13 23:05:46,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:46,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-10-13 23:05:46,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:46,680 INFO L225 Difference]: With dead ends: 4294 [2019-10-13 23:05:46,680 INFO L226 Difference]: Without dead ends: 2632 [2019-10-13 23:05:46,687 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:46,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2019-10-13 23:05:46,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2615. [2019-10-13 23:05:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2615 states. [2019-10-13 23:05:46,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3997 transitions. [2019-10-13 23:05:46,832 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3997 transitions. Word has length 123 [2019-10-13 23:05:46,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:46,833 INFO L462 AbstractCegarLoop]: Abstraction has 2615 states and 3997 transitions. [2019-10-13 23:05:46,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:46,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3997 transitions. [2019-10-13 23:05:46,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 23:05:46,837 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:46,837 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:46,837 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:46,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:46,838 INFO L82 PathProgramCache]: Analyzing trace with hash -888024506, now seen corresponding path program 1 times [2019-10-13 23:05:46,838 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:46,838 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829818892] [2019-10-13 23:05:46,839 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:46,839 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:46,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:46,985 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829818892] [2019-10-13 23:05:46,985 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:46,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:46,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820001153] [2019-10-13 23:05:46,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:46,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:46,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:46,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:46,987 INFO L87 Difference]: Start difference. First operand 2615 states and 3997 transitions. Second operand 3 states. [2019-10-13 23:05:47,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:47,214 INFO L93 Difference]: Finished difference Result 7028 states and 10970 transitions. [2019-10-13 23:05:47,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:47,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2019-10-13 23:05:47,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:47,249 INFO L225 Difference]: With dead ends: 7028 [2019-10-13 23:05:47,249 INFO L226 Difference]: Without dead ends: 4456 [2019-10-13 23:05:47,263 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:47,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4456 states. [2019-10-13 23:05:47,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4456 to 4438. [2019-10-13 23:05:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4438 states. [2019-10-13 23:05:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 6895 transitions. [2019-10-13 23:05:47,554 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 6895 transitions. Word has length 124 [2019-10-13 23:05:47,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:47,555 INFO L462 AbstractCegarLoop]: Abstraction has 4438 states and 6895 transitions. [2019-10-13 23:05:47,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:47,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 6895 transitions. [2019-10-13 23:05:47,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 23:05:47,559 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:47,560 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:47,560 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:47,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1760346703, now seen corresponding path program 1 times [2019-10-13 23:05:47,561 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:47,561 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901160516] [2019-10-13 23:05:47,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:47,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:47,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:47,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901160516] [2019-10-13 23:05:47,729 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:47,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:47,729 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844607413] [2019-10-13 23:05:47,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:47,730 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:47,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:47,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:47,730 INFO L87 Difference]: Start difference. First operand 4438 states and 6895 transitions. Second operand 3 states. [2019-10-13 23:05:48,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:48,186 INFO L93 Difference]: Finished difference Result 12497 states and 20026 transitions. [2019-10-13 23:05:48,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:48,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2019-10-13 23:05:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:48,255 INFO L225 Difference]: With dead ends: 12497 [2019-10-13 23:05:48,256 INFO L226 Difference]: Without dead ends: 8104 [2019-10-13 23:05:48,283 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:48,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8104 states. [2019-10-13 23:05:48,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8104 to 8085. [2019-10-13 23:05:48,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8085 states. [2019-10-13 23:05:48,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8085 states to 8085 states and 12902 transitions. [2019-10-13 23:05:48,761 INFO L78 Accepts]: Start accepts. Automaton has 8085 states and 12902 transitions. Word has length 125 [2019-10-13 23:05:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:48,762 INFO L462 AbstractCegarLoop]: Abstraction has 8085 states and 12902 transitions. [2019-10-13 23:05:48,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 8085 states and 12902 transitions. [2019-10-13 23:05:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 23:05:48,766 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:48,767 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:48,767 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:48,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:48,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1262440168, now seen corresponding path program 1 times [2019-10-13 23:05:48,768 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:48,768 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931722406] [2019-10-13 23:05:48,768 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:48,768 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:48,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:48,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:48,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931722406] [2019-10-13 23:05:48,928 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:48,928 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:48,928 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346283065] [2019-10-13 23:05:48,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:48,929 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:48,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:48,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:48,930 INFO L87 Difference]: Start difference. First operand 8085 states and 12902 transitions. Second operand 3 states. [2019-10-13 23:05:49,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:49,692 INFO L93 Difference]: Finished difference Result 23436 states and 39221 transitions. [2019-10-13 23:05:49,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:49,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-10-13 23:05:49,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:49,818 INFO L225 Difference]: With dead ends: 23436 [2019-10-13 23:05:49,819 INFO L226 Difference]: Without dead ends: 15400 [2019-10-13 23:05:49,861 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:49,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15400 states. [2019-10-13 23:05:50,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15400 to 15380. [2019-10-13 23:05:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15380 states. [2019-10-13 23:05:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15380 states to 15380 states and 25645 transitions. [2019-10-13 23:05:50,793 INFO L78 Accepts]: Start accepts. Automaton has 15380 states and 25645 transitions. Word has length 126 [2019-10-13 23:05:50,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:50,796 INFO L462 AbstractCegarLoop]: Abstraction has 15380 states and 25645 transitions. [2019-10-13 23:05:50,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:50,796 INFO L276 IsEmpty]: Start isEmpty. Operand 15380 states and 25645 transitions. [2019-10-13 23:05:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 23:05:50,800 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:50,800 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:50,800 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:50,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:50,801 INFO L82 PathProgramCache]: Analyzing trace with hash 479556563, now seen corresponding path program 1 times [2019-10-13 23:05:50,801 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:50,801 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497397735] [2019-10-13 23:05:50,801 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:50,802 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:50,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:51,833 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497397735] [2019-10-13 23:05:51,834 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:51,834 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:51,834 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334961477] [2019-10-13 23:05:51,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:51,835 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:51,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:51,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:51,836 INFO L87 Difference]: Start difference. First operand 15380 states and 25645 transitions. Second operand 3 states. [2019-10-13 23:05:52,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:52,378 INFO L93 Difference]: Finished difference Result 16313 states and 27498 transitions. [2019-10-13 23:05:52,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:52,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2019-10-13 23:05:52,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:52,548 INFO L225 Difference]: With dead ends: 16313 [2019-10-13 23:05:52,549 INFO L226 Difference]: Without dead ends: 16300 [2019-10-13 23:05:52,567 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:52,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16300 states. [2019-10-13 23:05:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16300 to 16285. [2019-10-13 23:05:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16285 states. [2019-10-13 23:05:53,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16285 states to 16285 states and 27449 transitions. [2019-10-13 23:05:53,615 INFO L78 Accepts]: Start accepts. Automaton has 16285 states and 27449 transitions. Word has length 127 [2019-10-13 23:05:53,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:53,616 INFO L462 AbstractCegarLoop]: Abstraction has 16285 states and 27449 transitions. [2019-10-13 23:05:53,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 16285 states and 27449 transitions. [2019-10-13 23:05:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 23:05:53,624 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:53,625 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:53,625 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:53,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:53,625 INFO L82 PathProgramCache]: Analyzing trace with hash 667088604, now seen corresponding path program 1 times [2019-10-13 23:05:53,626 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:53,626 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548946930] [2019-10-13 23:05:53,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:53,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:53,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-13 23:05:53,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548946930] [2019-10-13 23:05:53,830 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:53,830 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:05:53,830 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084487546] [2019-10-13 23:05:53,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:05:53,831 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:53,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:05:53,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:05:53,832 INFO L87 Difference]: Start difference. First operand 16285 states and 27449 transitions. Second operand 5 states. [2019-10-13 23:05:54,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:54,402 INFO L93 Difference]: Finished difference Result 32743 states and 56884 transitions. [2019-10-13 23:05:54,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:05:54,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2019-10-13 23:05:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:54,502 INFO L225 Difference]: With dead ends: 32743 [2019-10-13 23:05:54,502 INFO L226 Difference]: Without dead ends: 16501 [2019-10-13 23:05:54,579 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:05:54,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16501 states. [2019-10-13 23:05:55,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16501 to 16465. [2019-10-13 23:05:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16465 states. [2019-10-13 23:05:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16465 states to 16465 states and 27629 transitions. [2019-10-13 23:05:55,521 INFO L78 Accepts]: Start accepts. Automaton has 16465 states and 27629 transitions. Word has length 196 [2019-10-13 23:05:55,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:55,522 INFO L462 AbstractCegarLoop]: Abstraction has 16465 states and 27629 transitions. [2019-10-13 23:05:55,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:05:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 16465 states and 27629 transitions. [2019-10-13 23:05:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 23:05:55,530 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:55,531 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:55,531 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:55,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1637418137, now seen corresponding path program 1 times [2019-10-13 23:05:55,532 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:55,532 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042487307] [2019-10-13 23:05:55,532 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:55,532 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:55,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:55,765 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 23:05:55,766 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042487307] [2019-10-13 23:05:55,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715793819] [2019-10-13 23:05:55,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:56,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 3724 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:05:56,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-13 23:05:56,729 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 23:05:57,365 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:57,365 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-13 23:05:57,370 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925201849] [2019-10-13 23:05:57,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:57,372 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:57,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:57,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:57,373 INFO L87 Difference]: Start difference. First operand 16465 states and 27629 transitions. Second operand 4 states.