/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --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_spec2_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:11:10,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:11:10,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:11:10,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:11:10,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:11:10,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:11:10,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:11:10,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:11:10,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:11:10,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:11:10,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:11:10,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:11:10,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:11:10,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:11:10,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:11:10,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:11:10,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:11:10,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:11:10,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:11:10,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:11:10,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:11:10,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:11:10,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:11:10,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:11:10,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:11:10,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:11:10,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:11:10,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:11:10,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:11:10,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:11:10,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:11:10,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:11:10,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:11:10,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:11:10,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:11:10,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:11:10,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:11:10,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:11:10,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:11:10,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:11:10,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:11:10,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:11:10,325 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:11:10,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:11:10,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:11:10,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:11:10,327 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:11:10,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:11:10,327 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:11:10,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:11:10,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:11:10,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:11:10,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:11:10,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:11:10,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:11:10,329 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:11:10,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:11:10,329 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:11:10,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:11:10,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:11:10,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:11:10,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:11:10,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:11:10,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:11:10,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:11:10,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:11:10,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:11:10,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:11:10,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:11:10,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:11:10,332 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 [2019-11-07 04:11:10,648 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:11:10,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:11:10,665 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:11:10,666 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:11:10,667 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:11:10,667 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product32.cil.c [2019-11-07 04:11:10,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31fee4608/cccfa675457946d08a8db7e9a4243b25/FLAG5c8d9b38b [2019-11-07 04:11:11,409 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:11:11,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product32.cil.c [2019-11-07 04:11:11,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31fee4608/cccfa675457946d08a8db7e9a4243b25/FLAG5c8d9b38b [2019-11-07 04:11:11,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31fee4608/cccfa675457946d08a8db7e9a4243b25 [2019-11-07 04:11:11,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:11:11,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:11:11,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:11,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:11:11,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:11:11,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:11" (1/1) ... [2019-11-07 04:11:11,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d6baed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:11, skipping insertion in model container [2019-11-07 04:11:11,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:11" (1/1) ... [2019-11-07 04:11:11,602 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:11:11,695 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:11:12,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:12,471 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:11:12,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:12,678 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:11:12,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:12 WrapperNode [2019-11-07 04:11:12,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:12,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:11:12,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:11:12,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:11:12,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:12" (1/1) ... [2019-11-07 04:11:12,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:12" (1/1) ... [2019-11-07 04:11:12,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:12" (1/1) ... [2019-11-07 04:11:12,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:12" (1/1) ... [2019-11-07 04:11:12,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:12" (1/1) ... [2019-11-07 04:11:12,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:12" (1/1) ... [2019-11-07 04:11:12,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:12" (1/1) ... [2019-11-07 04:11:12,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:11:12,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:11:12,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:11:12,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:11:12,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:11:12,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:11:12,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:11:12,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:12,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:11:12,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:11:12,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:11:12,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:11:12,968 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:11:12,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:11:12,969 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:11:12,969 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:11:12,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:11:12,970 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:11:12,970 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:11:12,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:11:12,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:12,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:12,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:12,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:11:12,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:11:12,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:11:12,972 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:11:12,972 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:11:12,972 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:11:12,972 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:11:12,973 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:11:12,973 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:11:12,973 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:11:12,973 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:11:12,973 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:11:12,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:11:12,974 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:11:12,974 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:11:12,974 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:11:12,974 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:11:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:11:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:11:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:11:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:11:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:11:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:11:12,976 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:11:12,976 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:11:12,976 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:11:12,976 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:11:12,976 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:11:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:11:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:11:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:11:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:11:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:11:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:11:12,978 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:11:12,978 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:11:12,978 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:11:12,978 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:11:12,979 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:11:12,979 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:11:12,979 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:11:12,979 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:11:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:11:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:11:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:11:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:11:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:11:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:11:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:11:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:11:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:11:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:11:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:11:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:11:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:11:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:11:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:11:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-11-07 04:11:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:11:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-11-07 04:11:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:11:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:11:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:11:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:11:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:11:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:11:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:11:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:11:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:11:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:11:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:11:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:11:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:11:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:11:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:11:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:11:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:11:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:11:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:11:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:11:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:11:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:11:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:11:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:11:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:11:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:11:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:11:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:11:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:11:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:11:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:11:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:11:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:11:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:11:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:11:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:11:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:11:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:11:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:11:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:11:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:11:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:11:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:11:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:11:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:11:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:11:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:11:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:11:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:11:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:11:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:11:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:11:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:11:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:11:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:11:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:11:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:11:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:11:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:11:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:11:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:11:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:11:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:11:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:11:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:11:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:11:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:11:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:11:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:11:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:11:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:11:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:11:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:11:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:11:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:11:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:11:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:11:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:11:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:11:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:11:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:11:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:11:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:11:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:11:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:11:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:11:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:11:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:11:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:11:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:11:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:11:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-11-07 04:11:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-11-07 04:11:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:11:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:11:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:11:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:11:18,108 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:11:18,109 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:11:18,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:18 BoogieIcfgContainer [2019-11-07 04:11:18,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:11:18,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:11:18,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:11:18,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:11:18,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:11:11" (1/3) ... [2019-11-07 04:11:18,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5fbf69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:18, skipping insertion in model container [2019-11-07 04:11:18,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:12" (2/3) ... [2019-11-07 04:11:18,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5fbf69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:18, skipping insertion in model container [2019-11-07 04:11:18,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:18" (3/3) ... [2019-11-07 04:11:18,118 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product32.cil.c [2019-11-07 04:11:18,128 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:11:18,137 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:11:18,148 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:11:18,181 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:11:18,182 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:11:18,182 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:11:18,182 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:11:18,182 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:11:18,182 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:11:18,182 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:11:18,182 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:11:18,217 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states. [2019-11-07 04:11:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-11-07 04:11:18,230 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:18,232 INFO L410 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] [2019-11-07 04:11:18,236 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:18,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:18,243 INFO L82 PathProgramCache]: Analyzing trace with hash 716596662, now seen corresponding path program 1 times [2019-11-07 04:11:18,253 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:18,253 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122937785] [2019-11-07 04:11:18,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:11:18,907 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122937785] [2019-11-07 04:11:18,907 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:18,908 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:11:18,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131301600] [2019-11-07 04:11:18,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:11:18,915 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:18,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:11:18,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:11:18,932 INFO L87 Difference]: Start difference. First operand 616 states. Second operand 2 states. [2019-11-07 04:11:19,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:19,021 INFO L93 Difference]: Finished difference Result 513 states and 755 transitions. [2019-11-07 04:11:19,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:11:19,023 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-11-07 04:11:19,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:19,053 INFO L225 Difference]: With dead ends: 513 [2019-11-07 04:11:19,053 INFO L226 Difference]: Without dead ends: 479 [2019-11-07 04:11:19,057 INFO L630 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 [2019-11-07 04:11:19,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2019-11-07 04:11:19,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2019-11-07 04:11:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2019-11-07 04:11:19,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 704 transitions. [2019-11-07 04:11:19,199 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 704 transitions. Word has length 74 [2019-11-07 04:11:19,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:19,204 INFO L462 AbstractCegarLoop]: Abstraction has 479 states and 704 transitions. [2019-11-07 04:11:19,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:11:19,205 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 704 transitions. [2019-11-07 04:11:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-07 04:11:19,213 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:19,216 INFO L410 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] [2019-11-07 04:11:19,216 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:19,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:19,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1077325897, now seen corresponding path program 1 times [2019-11-07 04:11:19,217 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:19,217 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974976973] [2019-11-07 04:11:19,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:11:19,570 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974976973] [2019-11-07 04:11:19,570 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:19,570 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:11:19,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408289216] [2019-11-07 04:11:19,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:11:19,572 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:19,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:11:19,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:11:19,573 INFO L87 Difference]: Start difference. First operand 479 states and 704 transitions. Second operand 9 states. [2019-11-07 04:11:25,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:25,504 INFO L93 Difference]: Finished difference Result 1320 states and 1980 transitions. [2019-11-07 04:11:25,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 04:11:25,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2019-11-07 04:11:25,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:25,518 INFO L225 Difference]: With dead ends: 1320 [2019-11-07 04:11:25,518 INFO L226 Difference]: Without dead ends: 883 [2019-11-07 04:11:25,527 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-11-07 04:11:25,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2019-11-07 04:11:25,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 852. [2019-11-07 04:11:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2019-11-07 04:11:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1237 transitions. [2019-11-07 04:11:25,649 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1237 transitions. Word has length 75 [2019-11-07 04:11:25,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:25,651 INFO L462 AbstractCegarLoop]: Abstraction has 852 states and 1237 transitions. [2019-11-07 04:11:25,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:11:25,652 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1237 transitions. [2019-11-07 04:11:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-07 04:11:25,658 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:25,658 INFO L410 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] [2019-11-07 04:11:25,658 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:25,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:25,659 INFO L82 PathProgramCache]: Analyzing trace with hash -983155146, now seen corresponding path program 1 times [2019-11-07 04:11:25,659 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:25,659 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411479902] [2019-11-07 04:11:25,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:11:25,923 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411479902] [2019-11-07 04:11:25,923 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:25,923 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:11:25,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713395047] [2019-11-07 04:11:25,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:11:25,924 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:25,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:11:25,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:11:25,925 INFO L87 Difference]: Start difference. First operand 852 states and 1237 transitions. Second operand 5 states. [2019-11-07 04:11:27,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:27,856 INFO L93 Difference]: Finished difference Result 2542 states and 3780 transitions. [2019-11-07 04:11:27,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:27,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2019-11-07 04:11:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:27,871 INFO L225 Difference]: With dead ends: 2542 [2019-11-07 04:11:27,871 INFO L226 Difference]: Without dead ends: 1733 [2019-11-07 04:11:27,875 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:11:27,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2019-11-07 04:11:27,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1637. [2019-11-07 04:11:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2019-11-07 04:11:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2421 transitions. [2019-11-07 04:11:27,978 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2421 transitions. Word has length 76 [2019-11-07 04:11:27,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:27,978 INFO L462 AbstractCegarLoop]: Abstraction has 1637 states and 2421 transitions. [2019-11-07 04:11:27,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:11:27,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2421 transitions. [2019-11-07 04:11:27,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-07 04:11:27,980 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:27,981 INFO L410 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] [2019-11-07 04:11:27,981 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:27,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:27,981 INFO L82 PathProgramCache]: Analyzing trace with hash -414612669, now seen corresponding path program 1 times [2019-11-07 04:11:27,982 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:27,982 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915887566] [2019-11-07 04:11:27,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:11:28,146 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915887566] [2019-11-07 04:11:28,146 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:28,146 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:28,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468667713] [2019-11-07 04:11:28,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:28,147 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:28,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:28,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:28,148 INFO L87 Difference]: Start difference. First operand 1637 states and 2421 transitions. Second operand 4 states. [2019-11-07 04:11:30,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:30,127 INFO L93 Difference]: Finished difference Result 4830 states and 7247 transitions. [2019-11-07 04:11:30,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:30,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2019-11-07 04:11:30,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:30,152 INFO L225 Difference]: With dead ends: 4830 [2019-11-07 04:11:30,152 INFO L226 Difference]: Without dead ends: 3237 [2019-11-07 04:11:30,161 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:11:30,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3237 states. [2019-11-07 04:11:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3237 to 3120. [2019-11-07 04:11:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2019-11-07 04:11:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4656 transitions. [2019-11-07 04:11:30,323 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4656 transitions. Word has length 77 [2019-11-07 04:11:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:30,324 INFO L462 AbstractCegarLoop]: Abstraction has 3120 states and 4656 transitions. [2019-11-07 04:11:30,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:30,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4656 transitions. [2019-11-07 04:11:30,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-07 04:11:30,326 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:30,326 INFO L410 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] [2019-11-07 04:11:30,326 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:30,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:30,326 INFO L82 PathProgramCache]: Analyzing trace with hash 30338840, now seen corresponding path program 1 times [2019-11-07 04:11:30,327 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:30,327 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299237507] [2019-11-07 04:11:30,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:11:30,455 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299237507] [2019-11-07 04:11:30,456 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:30,456 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:30,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748311744] [2019-11-07 04:11:30,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:30,457 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:30,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:30,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:30,458 INFO L87 Difference]: Start difference. First operand 3120 states and 4656 transitions. Second operand 4 states. [2019-11-07 04:11:32,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:32,504 INFO L93 Difference]: Finished difference Result 9324 states and 14118 transitions. [2019-11-07 04:11:32,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:32,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-11-07 04:11:32,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:32,550 INFO L225 Difference]: With dead ends: 9324 [2019-11-07 04:11:32,550 INFO L226 Difference]: Without dead ends: 6249 [2019-11-07 04:11:32,569 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:11:32,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2019-11-07 04:11:33,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 6087. [2019-11-07 04:11:33,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6087 states. [2019-11-07 04:11:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6087 states to 6087 states and 9164 transitions. [2019-11-07 04:11:33,124 INFO L78 Accepts]: Start accepts. Automaton has 6087 states and 9164 transitions. Word has length 78 [2019-11-07 04:11:33,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:33,127 INFO L462 AbstractCegarLoop]: Abstraction has 6087 states and 9164 transitions. [2019-11-07 04:11:33,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:33,127 INFO L276 IsEmpty]: Start isEmpty. Operand 6087 states and 9164 transitions. [2019-11-07 04:11:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-07 04:11:33,136 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:33,136 INFO L410 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] [2019-11-07 04:11:33,137 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:33,137 INFO L82 PathProgramCache]: Analyzing trace with hash 938937637, now seen corresponding path program 1 times [2019-11-07 04:11:33,138 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:33,138 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850952495] [2019-11-07 04:11:33,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:11:33,323 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850952495] [2019-11-07 04:11:33,323 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:33,323 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:33,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167510000] [2019-11-07 04:11:33,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:33,324 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:33,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:33,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:33,325 INFO L87 Difference]: Start difference. First operand 6087 states and 9164 transitions. Second operand 4 states. [2019-11-07 04:11:35,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:35,641 INFO L93 Difference]: Finished difference Result 18327 states and 28127 transitions. [2019-11-07 04:11:35,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:35,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2019-11-07 04:11:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:35,724 INFO L225 Difference]: With dead ends: 18327 [2019-11-07 04:11:35,724 INFO L226 Difference]: Without dead ends: 12285 [2019-11-07 04:11:35,754 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:11:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12285 states. [2019-11-07 04:11:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12285 to 12034. [2019-11-07 04:11:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12034 states. [2019-11-07 04:11:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12034 states to 12034 states and 18338 transitions. [2019-11-07 04:11:36,723 INFO L78 Accepts]: Start accepts. Automaton has 12034 states and 18338 transitions. Word has length 79 [2019-11-07 04:11:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:36,724 INFO L462 AbstractCegarLoop]: Abstraction has 12034 states and 18338 transitions. [2019-11-07 04:11:36,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:36,726 INFO L276 IsEmpty]: Start isEmpty. Operand 12034 states and 18338 transitions. [2019-11-07 04:11:36,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-07 04:11:36,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:36,731 INFO L410 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] [2019-11-07 04:11:36,734 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:36,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:36,734 INFO L82 PathProgramCache]: Analyzing trace with hash -959266822, now seen corresponding path program 1 times [2019-11-07 04:11:36,734 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:36,735 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932555044] [2019-11-07 04:11:36,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:11:36,924 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932555044] [2019-11-07 04:11:36,924 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:36,925 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:11:36,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155966699] [2019-11-07 04:11:36,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:36,927 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:36,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:36,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:11:36,928 INFO L87 Difference]: Start difference. First operand 12034 states and 18338 transitions. Second operand 4 states. [2019-11-07 04:11:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:39,887 INFO L93 Difference]: Finished difference Result 36386 states and 57091 transitions. [2019-11-07 04:11:39,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:39,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2019-11-07 04:11:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:40,111 INFO L225 Difference]: With dead ends: 36386 [2019-11-07 04:11:40,112 INFO L226 Difference]: Without dead ends: 24385 [2019-11-07 04:11:40,189 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:11:40,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24385 states.