./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/config/KojakReach.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 077fd07d950f48ce906441d58675f31df157b5c1 ........................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/config/KojakReach.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/config/svcomp-Reach-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 077fd07d950f48ce906441d58675f31df157b5c1 ................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Concurrent programs are currently unsupported --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 03:18:27,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 03:18:27,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 03:18:27,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 03:18:27,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 03:18:27,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 03:18:27,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 03:18:27,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 03:18:27,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 03:18:27,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 03:18:27,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 03:18:27,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 03:18:27,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 03:18:27,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 03:18:27,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 03:18:27,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 03:18:27,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 03:18:27,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 03:18:27,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 03:18:27,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 03:18:27,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 03:18:27,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 03:18:27,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 03:18:27,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 03:18:27,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 03:18:27,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 03:18:27,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 03:18:27,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 03:18:27,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 03:18:27,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 03:18:27,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 03:18:27,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 03:18:27,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 03:18:27,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 03:18:27,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 03:18:27,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 03:18:27,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 03:18:27,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 03:18:27,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 03:18:27,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 03:18:27,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 03:18:27,993 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-10-13 03:18:28,036 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 03:18:28,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 03:18:28,040 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 03:18:28,040 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-13 03:18:28,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 03:18:28,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 03:18:28,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 03:18:28,042 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 03:18:28,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 03:18:28,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 03:18:28,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 03:18:28,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 03:18:28,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 03:18:28,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 03:18:28,050 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 03:18:28,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 03:18:28,051 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 03:18:28,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 03:18:28,051 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-13 03:18:28,051 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-13 03:18:28,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 03:18:28,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 03:18:28,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 03:18:28,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 03:18:28,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 03:18:28,053 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-13 03:18:28,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 03:18:28,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 03:18:28,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 077fd07d950f48ce906441d58675f31df157b5c1 [2021-10-13 03:18:28,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 03:18:28,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 03:18:28,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 03:18:28,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 03:18:28,331 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 03:18:28,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2021-10-13 03:18:28,394 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/data/bac6952fc/42130fdac9ce4efe86399cbf88110edf/FLAG4fe0c23a2 [2021-10-13 03:18:29,123 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 03:18:29,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2021-10-13 03:18:29,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/data/bac6952fc/42130fdac9ce4efe86399cbf88110edf/FLAG4fe0c23a2 [2021-10-13 03:18:29,300 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/data/bac6952fc/42130fdac9ce4efe86399cbf88110edf [2021-10-13 03:18:29,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 03:18:29,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 03:18:29,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 03:18:29,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 03:18:29,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 03:18:29,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:18:29" (1/1) ... [2021-10-13 03:18:29,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b322a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:29, skipping insertion in model container [2021-10-13 03:18:29,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:18:29" (1/1) ... [2021-10-13 03:18:29,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 03:18:29,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 03:18:30,207 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2021-10-13 03:18:30,243 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2021-10-13 03:18:30,248 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2021-10-13 03:18:30,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 03:18:30,281 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 03:18:30,368 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2021-10-13 03:18:30,411 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2021-10-13 03:18:30,423 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2021-10-13 03:18:30,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 03:18:30,603 INFO L208 MainTranslator]: Completed translation [2021-10-13 03:18:30,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:30 WrapperNode [2021-10-13 03:18:30,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 03:18:30,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 03:18:30,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 03:18:30,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 03:18:30,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:30" (1/1) ... [2021-10-13 03:18:30,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:30" (1/1) ... [2021-10-13 03:18:30,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 03:18:30,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 03:18:30,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 03:18:30,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 03:18:30,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:30" (1/1) ... [2021-10-13 03:18:30,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:30" (1/1) ... [2021-10-13 03:18:30,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:30" (1/1) ... [2021-10-13 03:18:30,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:30" (1/1) ... [2021-10-13 03:18:30,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:30" (1/1) ... [2021-10-13 03:18:30,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:30" (1/1) ... [2021-10-13 03:18:30,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:30" (1/1) ... [2021-10-13 03:18:30,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 03:18:30,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 03:18:30,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 03:18:30,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 03:18:30,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:30" (1/1) ... [2021-10-13 03:18:30,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 03:18:30,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/z3 [2021-10-13 03:18:30,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-13 03:18:30,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-13 03:18:30,899 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2021-10-13 03:18:30,900 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2021-10-13 03:18:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 03:18:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 03:18:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 03:18:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 03:18:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-13 03:18:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 03:18:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure writeV [2021-10-13 03:18:30,901 INFO L138 BoogieDeclarations]: Found implementation of procedure writeV [2021-10-13 03:18:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 03:18:30,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 03:18:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure Pop [2021-10-13 03:18:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure Pop [2021-10-13 03:18:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 03:18:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 03:18:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure Push [2021-10-13 03:18:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure Push [2021-10-13 03:18:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 03:18:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure Operation [2021-10-13 03:18:30,903 INFO L138 BoogieDeclarations]: Found implementation of procedure Operation [2021-10-13 03:18:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 03:18:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure readV [2021-10-13 03:18:30,903 INFO L138 BoogieDeclarations]: Found implementation of procedure readV [2021-10-13 03:18:30,905 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 03:18:31,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 03:18:31,990 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2021-10-13 03:18:31,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:18:31 BoogieIcfgContainer [2021-10-13 03:18:31,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 03:18:31,995 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-13 03:18:31,995 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-13 03:18:32,035 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-13 03:18:32,037 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:18:31" (1/1) ... [2021-10-13 03:18:32,038 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck has thrown an exception: java.lang.UnsupportedOperationException: Concurrent programs are currently unsupported at de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.initialize(CodeCheckObserver.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.process(CodeCheckObserver.java:363) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.CFGWalker.runObserver(CFGWalker.java:57) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 03:18:32,048 INFO L168 Benchmark]: Toolchain (without parser) took 2737.92 ms. Allocated memory was 111.1 MB in the beginning and 148.9 MB in the end (delta: 37.7 MB). Free memory was 77.8 MB in the beginning and 113.9 MB in the end (delta: -36.1 MB). Peak memory consumption was 61.8 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:32,049 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 111.1 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 03:18:32,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1298.79 ms. Allocated memory was 111.1 MB in the beginning and 148.9 MB in the end (delta: 37.7 MB). Free memory was 77.5 MB in the beginning and 106.8 MB in the end (delta: -29.2 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:32,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.53 ms. Allocated memory is still 148.9 MB. Free memory was 106.8 MB in the beginning and 101.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:32,053 INFO L168 Benchmark]: Boogie Preprocessor took 106.19 ms. Allocated memory is still 148.9 MB. Free memory was 101.7 MB in the beginning and 97.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:32,054 INFO L168 Benchmark]: RCFGBuilder took 1172.93 ms. Allocated memory is still 148.9 MB. Free memory was 97.5 MB in the beginning and 59.8 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:32,056 INFO L168 Benchmark]: CodeCheck took 45.49 ms. Allocated memory is still 148.9 MB. Free memory was 59.4 MB in the beginning and 113.9 MB in the end (delta: -54.5 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:32,065 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - ExceptionOrErrorResult: UnsupportedOperationException: Concurrent programs are currently unsupported de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: UnsupportedOperationException: Concurrent programs are currently unsupported: de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.initialize(CodeCheckObserver.java:174) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 111.1 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1298.79 ms. Allocated memory was 111.1 MB in the beginning and 148.9 MB in the end (delta: 37.7 MB). Free memory was 77.5 MB in the beginning and 106.8 MB in the end (delta: -29.2 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 109.53 ms. Allocated memory is still 148.9 MB. Free memory was 106.8 MB in the beginning and 101.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 106.19 ms. Allocated memory is still 148.9 MB. Free memory was 101.7 MB in the beginning and 97.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1172.93 ms. Allocated memory is still 148.9 MB. Free memory was 97.5 MB in the beginning and 59.8 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * CodeCheck took 45.49 ms. Allocated memory is still 148.9 MB. Free memory was 59.4 MB in the beginning and 113.9 MB in the end (delta: -54.5 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 03:18:32,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 03:18:34,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 03:18:34,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 03:18:34,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 03:18:34,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 03:18:34,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 03:18:34,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 03:18:34,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 03:18:34,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 03:18:34,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 03:18:34,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 03:18:34,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 03:18:34,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 03:18:34,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 03:18:34,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 03:18:34,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 03:18:34,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 03:18:34,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 03:18:34,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 03:18:34,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 03:18:34,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 03:18:34,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 03:18:34,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 03:18:34,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 03:18:34,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 03:18:34,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 03:18:34,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 03:18:34,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 03:18:34,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 03:18:34,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 03:18:34,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 03:18:34,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 03:18:34,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 03:18:34,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 03:18:34,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 03:18:34,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 03:18:34,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 03:18:34,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 03:18:34,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 03:18:34,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 03:18:34,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 03:18:34,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/config/svcomp-Reach-32bit-Kojak_Bitvector.epf [2021-10-13 03:18:34,802 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 03:18:34,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 03:18:34,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 03:18:34,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-13 03:18:34,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 03:18:34,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 03:18:34,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 03:18:34,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 03:18:34,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 03:18:34,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 03:18:34,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 03:18:34,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 03:18:34,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 03:18:34,809 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 03:18:34,809 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 03:18:34,809 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 03:18:34,809 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 03:18:34,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 03:18:34,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 03:18:34,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 03:18:34,810 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-13 03:18:34,810 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-13 03:18:34,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 03:18:34,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 03:18:34,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 03:18:34,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 03:18:34,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 03:18:34,812 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 03:18:34,812 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 03:18:34,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 03:18:34,812 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2021-10-13 03:18:34,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 03:18:34,813 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 077fd07d950f48ce906441d58675f31df157b5c1 [2021-10-13 03:18:35,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 03:18:35,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 03:18:35,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 03:18:35,214 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 03:18:35,215 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 03:18:35,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2021-10-13 03:18:35,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/data/0306549cf/54f9a2d228494274be304eb51e34eaf3/FLAGdf7f61d68 [2021-10-13 03:18:36,025 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 03:18:36,026 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2021-10-13 03:18:36,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/data/0306549cf/54f9a2d228494274be304eb51e34eaf3/FLAGdf7f61d68 [2021-10-13 03:18:36,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/data/0306549cf/54f9a2d228494274be304eb51e34eaf3 [2021-10-13 03:18:36,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 03:18:36,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 03:18:36,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 03:18:36,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 03:18:36,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 03:18:36,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:18:36" (1/1) ... [2021-10-13 03:18:36,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c4a5af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:36, skipping insertion in model container [2021-10-13 03:18:36,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:18:36" (1/1) ... [2021-10-13 03:18:36,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 03:18:36,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 03:18:37,077 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2021-10-13 03:18:37,130 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2021-10-13 03:18:37,135 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2021-10-13 03:18:37,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 03:18:37,165 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 03:18:37,245 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2021-10-13 03:18:37,269 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2021-10-13 03:18:37,274 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2021-10-13 03:18:37,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 03:18:37,498 INFO L208 MainTranslator]: Completed translation [2021-10-13 03:18:37,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:37 WrapperNode [2021-10-13 03:18:37,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 03:18:37,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 03:18:37,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 03:18:37,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 03:18:37,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:37" (1/1) ... [2021-10-13 03:18:37,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:37" (1/1) ... [2021-10-13 03:18:37,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 03:18:37,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 03:18:37,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 03:18:37,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 03:18:37,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:37" (1/1) ... [2021-10-13 03:18:37,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:37" (1/1) ... [2021-10-13 03:18:37,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:37" (1/1) ... [2021-10-13 03:18:37,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:37" (1/1) ... [2021-10-13 03:18:37,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:37" (1/1) ... [2021-10-13 03:18:37,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:37" (1/1) ... [2021-10-13 03:18:37,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:37" (1/1) ... [2021-10-13 03:18:37,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 03:18:37,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 03:18:37,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 03:18:37,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 03:18:37,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:37" (1/1) ... [2021-10-13 03:18:37,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 03:18:37,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/z3 [2021-10-13 03:18:37,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-13 03:18:37,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-13 03:18:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2021-10-13 03:18:37,804 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2021-10-13 03:18:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 03:18:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 03:18:37,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 03:18:37,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-10-13 03:18:37,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 03:18:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-13 03:18:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 03:18:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure writeV [2021-10-13 03:18:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure writeV [2021-10-13 03:18:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 03:18:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 03:18:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 03:18:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure Pop [2021-10-13 03:18:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Pop [2021-10-13 03:18:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 03:18:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 03:18:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 03:18:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure Push [2021-10-13 03:18:37,810 INFO L138 BoogieDeclarations]: Found implementation of procedure Push [2021-10-13 03:18:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure Operation [2021-10-13 03:18:37,810 INFO L138 BoogieDeclarations]: Found implementation of procedure Operation [2021-10-13 03:18:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure readV [2021-10-13 03:18:37,810 INFO L138 BoogieDeclarations]: Found implementation of procedure readV [2021-10-13 03:18:37,812 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 03:18:39,344 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 03:18:39,345 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2021-10-13 03:18:39,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:18:39 BoogieIcfgContainer [2021-10-13 03:18:39,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 03:18:39,348 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-13 03:18:39,349 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-13 03:18:39,358 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-13 03:18:39,359 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:18:39" (1/1) ... [2021-10-13 03:18:39,360 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck has thrown an exception: java.lang.UnsupportedOperationException: Concurrent programs are currently unsupported at de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.initialize(CodeCheckObserver.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.process(CodeCheckObserver.java:363) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.CFGWalker.runObserver(CFGWalker.java:57) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 03:18:39,364 INFO L168 Benchmark]: Toolchain (without parser) took 3183.83 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 30.7 MB in the beginning and 50.7 MB in the end (delta: -19.9 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:39,365 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 48.2 MB. Free memory was 30.4 MB in the beginning and 30.4 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 03:18:39,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1316.01 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 30.5 MB in the beginning and 53.6 MB in the end (delta: -23.1 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:39,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.52 ms. Allocated memory is still 86.0 MB. Free memory was 53.6 MB in the beginning and 48.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:39,367 INFO L168 Benchmark]: Boogie Preprocessor took 103.01 ms. Allocated memory is still 86.0 MB. Free memory was 48.7 MB in the beginning and 43.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:39,368 INFO L168 Benchmark]: RCFGBuilder took 1651.19 ms. Allocated memory is still 86.0 MB. Free memory was 43.5 MB in the beginning and 51.6 MB in the end (delta: -8.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:39,369 INFO L168 Benchmark]: CodeCheck took 13.75 ms. Allocated memory is still 86.0 MB. Free memory was 51.6 MB in the beginning and 50.7 MB in the end (delta: 940.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:39,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - ExceptionOrErrorResult: UnsupportedOperationException: Concurrent programs are currently unsupported de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: UnsupportedOperationException: Concurrent programs are currently unsupported: de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.initialize(CodeCheckObserver.java:174) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 48.2 MB. Free memory was 30.4 MB in the beginning and 30.4 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1316.01 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 30.5 MB in the beginning and 53.6 MB in the end (delta: -23.1 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.52 ms. Allocated memory is still 86.0 MB. Free memory was 53.6 MB in the beginning and 48.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.01 ms. Allocated memory is still 86.0 MB. Free memory was 48.7 MB in the beginning and 43.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1651.19 ms. Allocated memory is still 86.0 MB. Free memory was 43.5 MB in the beginning and 51.6 MB in the end (delta: -8.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * CodeCheck took 13.75 ms. Allocated memory is still 86.0 MB. Free memory was 51.6 MB in the beginning and 50.7 MB in the end (delta: 940.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 03:18:39,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0f17d7-b384-4075-ace2-890206d9e059/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...