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 CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 06:30:15,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 06:30:15,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 06:30:15,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 06:30:15,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 06:30:15,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 06:30:15,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 06:30:15,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 06:30:15,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 06:30:15,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 06:30:15,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 06:30:15,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 06:30:15,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 06:30:15,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 06:30:15,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 06:30:15,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 06:30:15,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 06:30:15,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 06:30:15,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 06:30:15,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 06:30:15,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 06:30:15,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 06:30:15,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 06:30:15,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 06:30:15,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 06:30:15,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 06:30:15,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 06:30:15,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 06:30:15,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 06:30:15,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 06:30:15,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 06:30:15,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 06:30:15,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 06:30:15,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 06:30:15,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 06:30:15,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 06:30:15,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 06:30:15,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 06:30:15,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 06:30:15,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 06:30:15,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 06:30:15,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 06:30:15,771 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 06:30:15,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 06:30:15,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 06:30:15,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 06:30:15,773 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 06:30:15,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 06:30:15,773 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 06:30:15,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 06:30:15,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 06:30:15,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 06:30:15,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 06:30:15,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 06:30:15,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 06:30:15,775 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 06:30:15,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 06:30:15,775 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 06:30:15,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 06:30:15,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 06:30:15,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 06:30:15,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 06:30:15,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 06:30:15,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 06:30:15,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 06:30:15,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 06:30:15,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 06:30:15,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 06:30:15,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 06:30:15,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 06:30:15,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 06:30:16,046 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 06:30:16,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 06:30:16,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 06:30:16,068 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 06:30:16,069 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 06:30:16,069 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-2.i [2019-10-15 06:30:16,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36f03ebe8/3e9327c3f1224c4ea31970581ed56195/FLAG5b0fe46df [2019-10-15 06:30:16,677 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 06:30:16,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-2.i [2019-10-15 06:30:16,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36f03ebe8/3e9327c3f1224c4ea31970581ed56195/FLAG5b0fe46df [2019-10-15 06:30:16,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36f03ebe8/3e9327c3f1224c4ea31970581ed56195 [2019-10-15 06:30:16,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 06:30:16,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 06:30:16,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 06:30:16,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 06:30:16,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 06:30:16,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:30:16" (1/1) ... [2019-10-15 06:30:16,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3528ad5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:16, skipping insertion in model container [2019-10-15 06:30:16,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:30:16" (1/1) ... [2019-10-15 06:30:16,954 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 06:30:17,016 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 06:30:17,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 06:30:17,498 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 06:30:17,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 06:30:17,639 INFO L192 MainTranslator]: Completed translation [2019-10-15 06:30:17,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:17 WrapperNode [2019-10-15 06:30:17,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 06:30:17,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 06:30:17,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 06:30:17,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 06:30:17,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:17" (1/1) ... [2019-10-15 06:30:17,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:17" (1/1) ... [2019-10-15 06:30:17,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:17" (1/1) ... [2019-10-15 06:30:17,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:17" (1/1) ... [2019-10-15 06:30:17,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:17" (1/1) ... [2019-10-15 06:30:17,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:17" (1/1) ... [2019-10-15 06:30:17,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:17" (1/1) ... [2019-10-15 06:30:17,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 06:30:17,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 06:30:17,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 06:30:17,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 06:30:17,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 06:30:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 06:30:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 06:30:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 06:30:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 06:30:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 06:30:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2019-10-15 06:30:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-10-15 06:30:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-10-15 06:30:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-10-15 06:30:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-10-15 06:30:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-10-15 06:30:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-10-15 06:30:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2019-10-15 06:30:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2019-10-15 06:30:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-15 06:30:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2019-10-15 06:30:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2019-10-15 06:30:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2019-10-15 06:30:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 06:30:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-15 06:30:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-15 06:30:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 06:30:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-15 06:30:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 06:30:17,774 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 06:30:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 06:30:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 06:30:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 06:30:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 06:30:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 06:30:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 06:30:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 06:30:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 06:30:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 06:30:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 06:30:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 06:30:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 06:30:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 06:30:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 06:30:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 06:30:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 06:30:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 06:30:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 06:30:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 06:30:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 06:30:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 06:30:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 06:30:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 06:30:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 06:30:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 06:30:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 06:30:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 06:30:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 06:30:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 06:30:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 06:30:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 06:30:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 06:30:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 06:30:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 06:30:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 06:30:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 06:30:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 06:30:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 06:30:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 06:30:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 06:30:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 06:30:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 06:30:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 06:30:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 06:30:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 06:30:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 06:30:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 06:30:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 06:30:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 06:30:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 06:30:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 06:30:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 06:30:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 06:30:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 06:30:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 06:30:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 06:30:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 06:30:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 06:30:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 06:30:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 06:30:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 06:30:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 06:30:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 06:30:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 06:30:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 06:30:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 06:30:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 06:30:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 06:30:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 06:30:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 06:30:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 06:30:17,786 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 06:30:17,786 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 06:30:17,786 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 06:30:17,786 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 06:30:17,786 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 06:30:17,786 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 06:30:17,786 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 06:30:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 06:30:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 06:30:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 06:30:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 06:30:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 06:30:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 06:30:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 06:30:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 06:30:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 06:30:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 06:30:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 06:30:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 06:30:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 06:30:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 06:30:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 06:30:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 06:30:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 06:30:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 06:30:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 06:30:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 06:30:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 06:30:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 06:30:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 06:30:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 06:30:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 06:30:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 06:30:17,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 06:30:17,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 06:30:17,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 06:30:17,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 06:30:17,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 06:30:17,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 06:30:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2019-10-15 06:30:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-10-15 06:30:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 06:30:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-10-15 06:30:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-10-15 06:30:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-10-15 06:30:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 06:30:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-10-15 06:30:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-10-15 06:30:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2019-10-15 06:30:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2019-10-15 06:30:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-15 06:30:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2019-10-15 06:30:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2019-10-15 06:30:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2019-10-15 06:30:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 06:30:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 06:30:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-15 06:30:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-15 06:30:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 06:30:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-15 06:30:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 06:30:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 06:30:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 06:30:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 06:30:17,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 06:30:18,605 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 06:30:18,606 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 06:30:18,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:30:18 BoogieIcfgContainer [2019-10-15 06:30:18,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 06:30:18,608 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-10-15 06:30:18,608 INFO L271 PluginConnector]: Initializing Sifa... [2019-10-15 06:30:18,608 INFO L275 PluginConnector]: Sifa initialized [2019-10-15 06:30:18,609 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:30:18" (1/1) ... [2019-10-15 06:30:18,609 INFO L79 SifaObserver]: LogSizeWrapperFluid Intern Fluid=SizeLimitFluid ♦ Abstract Domain=CompoundDomain ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=2 ♦ 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=8 ♦ Simplification Technique=SIMPLIFY_QUICK ♦ SizeLimitFluid Max. DAG Size=-1 [2019-10-15 06:30:18,632 INFO L162 IcfgInterpreter]: Started Sifa with 3 locations of interest [2019-10-15 06:30:18,632 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 06:30:18,640 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 06:30:18,648 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 06:30:18,650 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 06:30:18,866 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-10-15 06:30:19,036 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 76 for LOIs [2019-10-15 06:30:19,047 INFO L199 IcfgInterpreter]: Interpreting procedure foo with input of size 76 for LOIs [2019-10-15 06:30:19,137 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 06:30:19,476 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2019-10-15 06:30:19,720 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-10-15 06:30:19,758 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-10-15 06:30:19,797 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-10-15 06:30:21,424 INFO L199 IcfgInterpreter]: Interpreting procedure mutex_lock with input of size 30 for LOIs [2019-10-15 06:30:21,433 INFO L199 IcfgInterpreter]: Interpreting procedure ldv_check_final_state with input of size 1 for LOIs [2019-10-15 06:30:21,455 INFO L199 IcfgInterpreter]: Interpreting procedure mutex_unlock with input of size 21 for LOIs [2019-10-15 06:30:21,462 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 06:30:21,480 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-10-15 06:30:21,480 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-10-15 06:30:21,482 INFO L168 Benchmark]: Toolchain (without parser) took 4539.47 ms. Allocated memory was 143.7 MB in the beginning and 298.8 MB in the end (delta: 155.2 MB). Free memory was 98.3 MB in the beginning and 234.1 MB in the end (delta: -135.8 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2019-10-15 06:30:21,482 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 143.7 MB. Free memory was 118.8 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 06:30:21,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.26 ms. Allocated memory was 143.7 MB in the beginning and 201.9 MB in the end (delta: 58.2 MB). Free memory was 98.1 MB in the beginning and 160.8 MB in the end (delta: -62.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2019-10-15 06:30:21,488 INFO L168 Benchmark]: Boogie Preprocessor took 76.35 ms. Allocated memory is still 201.9 MB. Free memory was 160.8 MB in the beginning and 157.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2019-10-15 06:30:21,488 INFO L168 Benchmark]: RCFGBuilder took 890.12 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 157.4 MB in the beginning and 196.1 MB in the end (delta: -38.7 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. [2019-10-15 06:30:21,489 INFO L168 Benchmark]: Sifa took 2872.48 ms. Allocated memory was 231.2 MB in the beginning and 298.8 MB in the end (delta: 67.6 MB). Free memory was 196.1 MB in the beginning and 234.1 MB in the end (delta: -38.0 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2019-10-15 06:30:21,494 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 143.7 MB. Free memory was 118.8 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 697.26 ms. Allocated memory was 143.7 MB in the beginning and 201.9 MB in the end (delta: 58.2 MB). Free memory was 98.1 MB in the beginning and 160.8 MB in the end (delta: -62.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.35 ms. Allocated memory is still 201.9 MB. Free memory was 160.8 MB in the beginning and 157.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 890.12 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 157.4 MB in the beginning and 196.1 MB in the end (delta: -38.7 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. * Sifa took 2872.48 ms. Allocated memory was 231.2 MB in the beginning and 298.8 MB in the end (delta: 67.6 MB). Free memory was 196.1 MB in the beginning and 234.1 MB in the end (delta: -38.0 MB). Peak memory consumption was 29.6 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]: 2831, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 146, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 96, TOOLS_POST_TIME[ms]: 1023, TOOLS_POST_CALL_APPLICATIONS: 40, TOOLS_POST_CALL_TIME[ms]: 502, TOOLS_POST_RETURN_APPLICATIONS: 35, TOOLS_POST_RETURN_TIME[ms]: 417, TOOLS_QUANTIFIERELIM_APPLICATIONS: 171, TOOLS_QUANTIFIERELIM_TIME[ms]: 1867, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 483, FLUID_QUERY_TIME[ms]: 7, FLUID_QUERIES: 156, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 40, DOMAIN_JOIN_TIME[ms]: 527, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 190, DOMAIN_ISSUBSETEQ_APPLICATIONS: 10, DOMAIN_ISSUBSETEQ_TIME[ms]: 22, DOMAIN_ISBOTTOM_APPLICATIONS: 15, DOMAIN_ISBOTTOM_TIME[ms]: 30, LOOP_SUMMARIZER_APPLICATIONS: 8, LOOP_SUMMARIZER_CACHE_MISSES: 6, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 2221, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 2221, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 10, CALL_SUMMARIZER_APPLICATIONS: 35, CALL_SUMMARIZER_CACHE_MISSES: 14, CALL_SUMMARIZER_OVERALL_TIME[ms]: 1495, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 1494, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 6, PATH_EXPR_TIME[ms]: 7, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 38, DAG_COMPRESSION_PROCESSED_NODES: 337, DAG_COMPRESSION_RETAINED_NODES: 167 - UnprovableResult [Line: 660]: 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 400#(and (= |#NULL.base| 0) (<= |~#drvlist~0.offset| 0) (= |mutex_lock_#in~m.offset| mutex_lock_~m.offset) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |~#mutexes~0.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |~#drvlist~0.offset|) (<= |#NULL.offset| 0) (<= |~#mutexes~0.offset| 0) (<= 0 |~#mutexes~0.offset|) (= |mutex_lock_#in~m.base| mutex_lock_~m.base) (= |#valid| |old(#valid)|) (= |~#drvlist~0.offset| 0) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)). Possible FailurePath: - UnprovableResult [Line: 668]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 425#true. Possible FailurePath: - UnprovableResult [Line: 664]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 435#(or (and (not (= |~#drvlist~0.offset| (+ |mutex_unlock_#in~m.offset| 8))) (= |mutex_unlock_#in~m.offset| mutex_unlock_~m.offset) (= |#valid| |old(#valid)|) (= mutex_unlock_~m.base |mutex_unlock_#in~m.base|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (and (= |mutex_unlock_#in~m.offset| mutex_unlock_~m.offset) (= |#valid| |old(#valid)|) (= mutex_unlock_~m.base |mutex_unlock_#in~m.base|) (not (= |~#drvlist~0.base| |mutex_unlock_#in~m.base|)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...