java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --sifa.abstract.domain ExplicitValueDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.logsizewrapperfluid.intern.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK --sifa.max.parallel.explicit.values 4 --sifa.sizelimitfluid.max.disjunctions 16 -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-ba7495b [2019-09-25 17:46:57,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-25 17:46:57,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-25 17:46:57,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-25 17:46:57,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-25 17:46:57,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-25 17:46:57,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-25 17:46:57,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-25 17:46:57,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-25 17:46:57,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-25 17:46:57,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-25 17:46:57,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-25 17:46:57,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-25 17:46:57,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-25 17:46:57,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-25 17:46:57,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-25 17:46:57,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-25 17:46:57,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-25 17:46:57,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-25 17:46:57,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-25 17:46:57,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-25 17:46:57,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-25 17:46:57,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-25 17:46:57,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-25 17:46:57,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-25 17:46:57,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-25 17:46:57,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-25 17:46:57,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-25 17:46:57,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-25 17:46:57,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-25 17:46:57,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-25 17:46:57,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-25 17:46:57,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-25 17:46:57,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-25 17:46:57,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-25 17:46:57,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-25 17:46:57,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-25 17:46:57,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-25 17:46:57,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-25 17:46:57,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-25 17:46:57,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-25 17:46:57,533 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 [2019-09-25 17:46:57,548 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-25 17:46:57,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-25 17:46:57,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-25 17:46:57,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-25 17:46:57,550 INFO L138 SettingsManager]: * Use SBE=true [2019-09-25 17:46:57,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-25 17:46:57,550 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-25 17:46:57,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-25 17:46:57,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-25 17:46:57,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-25 17:46:57,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-25 17:46:57,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-25 17:46:57,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-25 17:46:57,551 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-25 17:46:57,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-25 17:46:57,552 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-25 17:46:57,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-25 17:46:57,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-25 17:46:57,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-25 17:46:57,553 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-25 17:46:57,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-25 17:46:57,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-25 17:46:57,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-25 17:46:57,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-25 17:46:57,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-25 17:46:57,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-25 17:46:57,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-25 17:46:57,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-25 17:46:57,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> ExplicitValueDomain 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: LogSizeWrapperFluid Intern Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Max. Parallel Explicit Values -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: SizeLimitFluid Max. Disjunctions -> 16 [2019-09-25 17:46:57,588 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-25 17:46:57,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-25 17:46:57,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-25 17:46:57,605 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-25 17:46:57,606 INFO L275 PluginConnector]: CDTParser initialized [2019-09-25 17:46:57,606 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product24.cil.c [2019-09-25 17:46:57,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e427130a/951482361e6d4f9cbb7b344a119711a2/FLAG2193ffd33 [2019-09-25 17:46:58,200 INFO L306 CDTParser]: Found 1 translation units. [2019-09-25 17:46:58,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product24.cil.c [2019-09-25 17:46:58,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e427130a/951482361e6d4f9cbb7b344a119711a2/FLAG2193ffd33 [2019-09-25 17:46:58,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e427130a/951482361e6d4f9cbb7b344a119711a2 [2019-09-25 17:46:58,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-25 17:46:58,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-25 17:46:58,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-25 17:46:58,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-25 17:46:58,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-25 17:46:58,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:46:58" (1/1) ... [2019-09-25 17:46:58,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ac3fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:46:58, skipping insertion in model container [2019-09-25 17:46:58,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:46:58" (1/1) ... [2019-09-25 17:46:58,534 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-25 17:46:58,600 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-25 17:46:59,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-25 17:46:59,074 INFO L188 MainTranslator]: Completed pre-run [2019-09-25 17:46:59,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-25 17:46:59,249 INFO L192 MainTranslator]: Completed translation [2019-09-25 17:46:59,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:46:59 WrapperNode [2019-09-25 17:46:59,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-25 17:46:59,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-25 17:46:59,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-25 17:46:59,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-25 17:46:59,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:46:59" (1/1) ... [2019-09-25 17:46:59,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:46:59" (1/1) ... [2019-09-25 17:46:59,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:46:59" (1/1) ... [2019-09-25 17:46:59,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:46:59" (1/1) ... [2019-09-25 17:46:59,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:46:59" (1/1) ... [2019-09-25 17:46:59,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:46:59" (1/1) ... [2019-09-25 17:46:59,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:46:59" (1/1) ... [2019-09-25 17:46:59,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-25 17:46:59,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-25 17:46:59,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-25 17:46:59,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-25 17:46:59,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:46:59" (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 [2019-09-25 17:46:59,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-25 17:46:59,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-25 17:46:59,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-25 17:46:59,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-25 17:46:59,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-25 17:46:59,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-25 17:46:59,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-25 17:46:59,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-25 17:46:59,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-25 17:46:59,430 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-25 17:46:59,430 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-25 17:46:59,430 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-25 17:46:59,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-25 17:46:59,430 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-25 17:46:59,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-25 17:46:59,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-25 17:46:59,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-09-25 17:46:59,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-25 17:46:59,431 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-25 17:46:59,432 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-25 17:46:59,432 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-25 17:46:59,432 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-25 17:46:59,432 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-25 17:46:59,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-25 17:46:59,432 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-25 17:46:59,433 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-25 17:46:59,433 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-25 17:46:59,433 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-25 17:46:59,433 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-25 17:46:59,433 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-25 17:46:59,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-25 17:46:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-25 17:46:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-25 17:46:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-25 17:46:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-25 17:46:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-25 17:46:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-25 17:46:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-25 17:46:59,435 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-25 17:46:59,435 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-25 17:46:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-25 17:46:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-25 17:46:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-25 17:46:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-25 17:46:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-25 17:46:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-25 17:46:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-25 17:46:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-25 17:46:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-25 17:46:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-25 17:46:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-25 17:46:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-25 17:46:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-25 17:46:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-25 17:46:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-25 17:46:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-25 17:46:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-25 17:46:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-25 17:46:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-25 17:46:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-25 17:46:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-25 17:46:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-25 17:46:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-25 17:46:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-25 17:46:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-25 17:46:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-25 17:46:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-25 17:46:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-25 17:46:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-25 17:46:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-09-25 17:46:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-25 17:46:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-25 17:46:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-25 17:46:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-25 17:46:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-25 17:46:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-25 17:46:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-25 17:46:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-25 17:46:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-25 17:46:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-25 17:46:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-25 17:46:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-25 17:46:59,442 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-25 17:46:59,442 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-25 17:46:59,442 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-25 17:46:59,442 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-25 17:46:59,442 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-25 17:46:59,442 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-25 17:46:59,442 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-25 17:46:59,443 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-25 17:46:59,443 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-25 17:46:59,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-25 17:46:59,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-25 17:46:59,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-25 17:47:01,036 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-25 17:47:01,037 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-25 17:47:01,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:47:01 BoogieIcfgContainer [2019-09-25 17:47:01,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-25 17:47:01,039 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-25 17:47:01,039 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-25 17:47:01,040 INFO L275 PluginConnector]: Sifa initialized [2019-09-25 17:47:01,041 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:47:01" (1/1) ... [2019-09-25 17:47:01,041 INFO L79 SifaObserver]: LogSizeWrapperFluid Intern Fluid=SizeLimitFluid ♦ Abstract Domain=ExplicitValueDomain ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=4 ♦ Max. Parallel Intervals=2 ♦ Loop Summarizer=FixpointLoopSummarizer ♦ CompoundDomain Intern Domains=ExplicitValueDomain;IntervalDomain ♦ Call Summarizer=TopInputCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ SizeLimitFluid Max. Disjunctions=16 ♦ Simplification Technique=SIMPLIFY_QUICK ♦ SizeLimitFluid Max. DAG Size=-1 [2019-09-25 17:47:01,068 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-25 17:47:01,068 INFO L169 IcfgInterpreter]: Building call graph [2019-09-25 17:47:01,079 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-25 17:47:01,090 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-25 17:47:01,092 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-25 17:47:10,826 WARN L191 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-09-25 17:47:12,580 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-09-25 17:47:12,714 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-09-25 17:47:12,889 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-09-25 17:47:13,019 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-09-25 17:47:13,043 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 480 for LOIs [2019-09-25 17:47:13,102 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 480 for LOIs [2019-09-25 17:47:13,108 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 480 for LOIs [2019-09-25 17:47:13,349 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-09-25 17:47:13,483 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-09-25 17:47:13,948 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:14,353 WARN L191 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:14,625 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:14,886 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:15,094 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:15,356 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:15,542 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:15,787 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:15,965 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:16,226 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:16,384 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:16,637 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:16,794 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:17,007 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2019-09-25 17:47:17,551 WARN L191 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 512 [2019-09-25 17:47:19,227 WARN L191 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 512 [2019-09-25 17:47:20,758 WARN L191 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 512 [2019-09-25 17:47:23,095 WARN L191 SmtUtils]: Spent 934.00 ms on a formula simplification that was a NOOP. DAG size: 512 [2019-09-25 17:47:23,725 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 504 [2019-09-25 17:47:23,888 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 504 [2019-09-25 17:47:24,050 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 504 [2019-09-25 17:47:24,206 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 504 [2019-09-25 17:47:24,732 WARN L191 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 512 [2019-09-25 17:47:25,610 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 524 [2019-09-25 17:47:25,832 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 522 [2019-09-25 17:47:26,054 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 524 [2019-09-25 17:47:26,275 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 522 [2019-09-25 17:47:26,702 WARN L191 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 534 [2019-09-25 17:47:27,148 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 524 [2019-09-25 17:47:27,363 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 522 [2019-09-25 17:47:27,579 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 524 [2019-09-25 17:47:27,813 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 522 [2019-09-25 17:47:28,235 WARN L191 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 534 [2019-09-25 17:47:28,427 INFO L199 IcfgInterpreter]: Interpreting procedure cleanup with input of size 1 for LOIs [2019-09-25 17:47:28,429 INFO L199 IcfgInterpreter]: Interpreting procedure timeShift with input of size 78 for LOIs [2019-09-25 17:47:28,503 INFO L199 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification1_spec__1 with input of size 63 for LOIs [2019-09-25 17:47:28,508 INFO L199 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 77 for LOIs [2019-09-25 17:47:28,515 INFO L183 IcfgInterpreter]: Interpretation finished [2019-09-25 17:47:28,515 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-09-25 17:47:28,517 INFO L193 IcfgInterpreter]: Reachable states at location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 1443#(and (= |#t~string20.offset| 0) (= |#t~string21.offset| 0) (= |#t~string44.offset| 0) (= |#t~string56.offset| 0) (= |#t~string29.offset| 0) (= |#t~string42.offset| 0) (= |#t~string27.offset| 0) (= |#t~string58.offset| 0) (not (= ~pumpRunning~0 0)) (= |#t~string28.offset| 0) (= |#t~string66.offset| 0) (= |#t~string62.offset| 0) (= |#t~string64.offset| 0) (= |#t~string19.offset| 0) (= ~head~0.base 0) (not (= 0 ~methaneLevelCritical~0)) (= |#t~string32.offset| 0) (= |#t~string30.offset| 0) (= ~cleanupTimeShifts~0 4) (= |#t~string68.offset| 0) (<= ~methaneLevelCritical~0 2147483647) (= |#NULL.base| 0) (= |#t~string38.offset| 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#t~string18.offset| 0) (= |#t~string60.offset| 0) (= |#t~string22.offset| 0) (= ~head~0.offset 0) (<= ~pumpRunning~0 2147483647) (= |#t~string31.offset| 0) (= |#t~string70.offset| 0) (= |#t~string36.offset| 0) (= |#t~string40.offset| 0) (= |#NULL.offset| 0) (<= 0 (+ ~methaneLevelCritical~0 2147483648)) (= |#t~string23.offset| 0)) [2019-09-25 17:47:28,533 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-09-25 17:47:28,533 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-09-25 17:47:28,534 INFO L168 Benchmark]: Toolchain (without parser) took 30022.42 ms. Allocated memory was 136.3 MB in the beginning and 969.9 MB in the end (delta: 833.6 MB). Free memory was 83.0 MB in the beginning and 291.7 MB in the end (delta: -208.7 MB). Peak memory consumption was 624.9 MB. Max. memory is 7.1 GB. [2019-09-25 17:47:28,535 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 136.3 MB. Free memory was 102.4 MB in the beginning and 102.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-25 17:47:28,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 737.08 ms. Allocated memory was 136.3 MB in the beginning and 196.6 MB in the end (delta: 60.3 MB). Free memory was 82.8 MB in the beginning and 159.9 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2019-09-25 17:47:28,537 INFO L168 Benchmark]: Boogie Preprocessor took 110.14 ms. Allocated memory is still 196.6 MB. Free memory was 159.9 MB in the beginning and 155.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2019-09-25 17:47:28,538 INFO L168 Benchmark]: RCFGBuilder took 1677.22 ms. Allocated memory was 196.6 MB in the beginning and 213.9 MB in the end (delta: 17.3 MB). Free memory was 155.3 MB in the beginning and 138.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2019-09-25 17:47:28,539 INFO L168 Benchmark]: Sifa took 27493.89 ms. Allocated memory was 213.9 MB in the beginning and 969.9 MB in the end (delta: 756.0 MB). Free memory was 138.4 MB in the beginning and 291.7 MB in the end (delta: -153.4 MB). Peak memory consumption was 602.7 MB. Max. memory is 7.1 GB. [2019-09-25 17:47:28,543 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 136.3 MB. Free memory was 102.4 MB in the beginning and 102.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 737.08 ms. Allocated memory was 136.3 MB in the beginning and 196.6 MB in the end (delta: 60.3 MB). Free memory was 82.8 MB in the beginning and 159.9 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.14 ms. Allocated memory is still 196.6 MB. Free memory was 159.9 MB in the beginning and 155.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1677.22 ms. Allocated memory was 196.6 MB in the beginning and 213.9 MB in the end (delta: 17.3 MB). Free memory was 155.3 MB in the beginning and 138.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. * Sifa took 27493.89 ms. Allocated memory was 213.9 MB in the beginning and 969.9 MB in the end (delta: 756.0 MB). Free memory was 138.4 MB in the beginning and 291.7 MB in the end (delta: -153.4 MB). Peak memory consumption was 602.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.sifa: - StatisticsResult: Symbolic Interpretation with Fluid Abstractions OVERALL_TIME[ms]: 27449, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 578, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 382, TOOLS_POST_TIME[ms]: 11713, TOOLS_POST_CALL_APPLICATIONS: 154, TOOLS_POST_CALL_TIME[ms]: 337, TOOLS_POST_RETURN_APPLICATIONS: 147, TOOLS_POST_RETURN_TIME[ms]: 200, TOOLS_QUANTIFIERELIM_APPLICATIONS: 682, TOOLS_QUANTIFIERELIM_TIME[ms]: 12020, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 11517, FLUID_QUERY_TIME[ms]: 26, FLUID_QUERIES: 599, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 176, DOMAIN_JOIN_TIME[ms]: 14435, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME[ms]: 137, DOMAIN_ISSUBSETEQ_APPLICATIONS: 21, DOMAIN_ISSUBSETEQ_TIME[ms]: 44, DOMAIN_ISBOTTOM_APPLICATIONS: 104, DOMAIN_ISBOTTOM_TIME[ms]: 338, LOOP_SUMMARIZER_APPLICATIONS: 16, LOOP_SUMMARIZER_CACHE_MISSES: 16, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 4063, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 4062, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 21, CALL_SUMMARIZER_APPLICATIONS: 147, CALL_SUMMARIZER_CACHE_MISSES: 25, CALL_SUMMARIZER_OVERALL_TIME[ms]: 11988, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 11987, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 7, PATH_EXPR_TIME[ms]: 6, REGEX_TO_DAG_TIME[ms]: 7, DAG_COMPRESSION_TIME[ms]: 62, DAG_COMPRESSION_PROCESSED_NODES: 650, DAG_COMPRESSION_RETAINED_NODES: 343 - UnprovableResult [Line: 534]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 1443#(and (= |#t~string20.offset| 0) (= |#t~string21.offset| 0) (= |#t~string44.offset| 0) (= |#t~string56.offset| 0) (= |#t~string29.offset| 0) (= |#t~string42.offset| 0) (= |#t~string27.offset| 0) (= |#t~string58.offset| 0) (not (= ~pumpRunning~0 0)) (= |#t~string28.offset| 0) (= |#t~string66.offset| 0) (= |#t~string62.offset| 0) (= |#t~string64.offset| 0) (= |#t~string19.offset| 0) (= ~head~0.base 0) (not (= 0 ~methaneLevelCritical~0)) (= |#t~string32.offset| 0) (= |#t~string30.offset| 0) (= ~cleanupTimeShifts~0 4) (= |#t~string68.offset| 0) (<= ~methaneLevelCritical~0 2147483647) (= |#NULL.base| 0) (= |#t~string38.offset| 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#t~string18.offset| 0) (= |#t~string60.offset| 0) (= |#t~string22.offset| 0) (= ~head~0.offset 0) (<= ~pumpRunning~0 2147483647) (= |#t~string31.offset| 0) (= |#t~string70.offset| 0) (= |#t~string36.offset| 0) (= |#t~string40.offset| 0) (= |#NULL.offset| 0) (<= 0 (+ ~methaneLevelCritical~0 2147483648)) (= |#t~string23.offset| 0)). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...