./Ultimate.py --spec ../../sv-benchmarks/c/Systems_DeviceDriversLinux64_ReachSafety.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-jme_true-unreach-call.cil.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-jme_true-unreach-call.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/config/svcomp-Reach-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash deda687af4cadfadc61cf092e76b01ad0a6580ff ....................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-jme_true-unreach-call.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/config/svcomp-Reach-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash deda687af4cadfadc61cf092e76b01ad0a6580ff ........................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: TypeCheckException: Type mismatch ([bv32]bv8 != { base:bv32, offset:bv32 }) in C: (phylink & 8192U) != 0U ? "Full-Duplex, " : "Half-Duplex, " [8679] --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:03:13,160 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:03:13,162 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:03:13,171 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:03:13,171 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:03:13,172 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:03:13,173 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:03:13,175 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:03:13,177 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:03:13,177 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:03:13,178 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:03:13,178 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:03:13,180 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:03:13,180 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:03:13,181 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:03:13,182 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:03:13,182 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:03:13,184 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:03:13,186 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:03:13,188 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:03:13,189 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:03:13,190 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:03:13,192 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:03:13,192 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:03:13,192 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:03:13,193 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:03:13,194 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:03:13,195 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:03:13,196 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:03:13,196 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:03:13,197 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:03:13,197 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:03:13,197 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:03:13,197 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:03:13,198 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:03:13,200 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:03:13,200 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/config/svcomp-Reach-64bit-Kojak_Default.epf [2018-10-26 23:03:13,211 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:03:13,211 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:03:13,212 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:03:13,212 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 23:03:13,213 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 23:03:13,213 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 23:03:13,213 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:03:13,213 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:03:13,213 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:03:13,214 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:03:13,214 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:03:13,214 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:03:13,214 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:03:13,214 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:03:13,214 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-10-26 23:03:13,214 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-10-26 23:03:13,216 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:03:13,216 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:03:13,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-10-26 23:03:13,217 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:03:13,217 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:03:13,217 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:03:13,217 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-10-26 23:03:13,217 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:03:13,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:03:13,218 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:03:13,218 INFO L133 SettingsManager]: * To the following directory=dump/ 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-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak 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(__VERIFIER_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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deda687af4cadfadc61cf092e76b01ad0a6580ff [2018-10-26 23:03:13,259 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:03:13,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:03:13,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:03:13,276 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:03:13,276 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:03:13,277 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-jme_true-unreach-call.cil.c [2018-10-26 23:03:13,331 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/data/a0b1de9e1/1592b3d4ab7c46c699e7f7fd54bce3ae/FLAG1fd3ff0b1 [2018-10-26 23:03:14,233 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:03:14,234 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-jme_true-unreach-call.cil.c [2018-10-26 23:03:14,289 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/data/a0b1de9e1/1592b3d4ab7c46c699e7f7fd54bce3ae/FLAG1fd3ff0b1 [2018-10-26 23:03:14,302 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/data/a0b1de9e1/1592b3d4ab7c46c699e7f7fd54bce3ae [2018-10-26 23:03:14,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:03:14,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:03:14,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:03:14,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:03:14,314 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:03:14,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:03:14" (1/1) ... [2018-10-26 23:03:14,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2951ea62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:03:14, skipping insertion in model container [2018-10-26 23:03:14,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:03:14" (1/1) ... [2018-10-26 23:03:14,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:03:14,513 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:03:18,264 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckException: Type mismatch ([int]int != { base:int, offset:int }) in C: (phylink & 8192U) != 0U ? "Full-Duplex, " : "Half-Duplex, " [8679] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckAssignStatement(TypeCheckHelper.java:288) at de.uni_freiburg.informatik.ultimate.boogie.StatementFactory.constructAssignmentStatement(StatementFactory.java:62) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleConditionalOperator(CHandler.java:4101) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:999) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.ExpressionResultTransformer.dispatchDecaySwitchToRValueFunctionArgument(ExpressionResultTransformer.java:113) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:647) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:488) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1356) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1300) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1519) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:364) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3316) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2119) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:537) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:188) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:117) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:129) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-26 23:03:18,274 INFO L168 Benchmark]: Toolchain (without parser) took 3964.91 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 254.3 MB). Free memory was 940.9 MB in the beginning and 1.2 GB in the end (delta: -245.3 MB). Peak memory consumption was 324.5 MB. Max. memory is 11.5 GB. [2018-10-26 23:03:18,276 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:03:18,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3962.66 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 254.3 MB). Free memory was 940.9 MB in the beginning and 1.2 GB in the end (delta: -245.3 MB). Peak memory consumption was 324.5 MB. Max. memory is 11.5 GB. [2018-10-26 23:03:18,282 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 3962.66 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 254.3 MB). Free memory was 940.9 MB in the beginning and 1.2 GB in the end (delta: -245.3 MB). Peak memory consumption was 324.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type mismatch ([int]int != { base:int, offset:int }) in C: (phylink & 8192U) != 0U ? "Full-Duplex, " : "Half-Duplex, " [8679] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type mismatch ([int]int != { base:int, offset:int }) in C: (phylink & 8192U) != 0U ? "Full-Duplex, " : "Half-Duplex, " [8679]: de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:03:20,209 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:03:20,210 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:03:20,220 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:03:20,221 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:03:20,221 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:03:20,222 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:03:20,224 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:03:20,225 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:03:20,226 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:03:20,227 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:03:20,227 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:03:20,228 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:03:20,229 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:03:20,230 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:03:20,231 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:03:20,231 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:03:20,233 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:03:20,234 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:03:20,236 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:03:20,237 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:03:20,238 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:03:20,240 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:03:20,240 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:03:20,240 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:03:20,241 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:03:20,242 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:03:20,242 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:03:20,243 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:03:20,244 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:03:20,244 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:03:20,245 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:03:20,245 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:03:20,245 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:03:20,246 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:03:20,246 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:03:20,247 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/config/svcomp-Reach-64bit-Kojak_Bitvector.epf [2018-10-26 23:03:20,259 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:03:20,259 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:03:20,260 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:03:20,260 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 23:03:20,261 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 23:03:20,261 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 23:03:20,261 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:03:20,261 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:03:20,261 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:03:20,261 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:03:20,261 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:03:20,262 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 23:03:20,262 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 23:03:20,262 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:03:20,262 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:03:20,262 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-10-26 23:03:20,262 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-10-26 23:03:20,262 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:03:20,262 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:03:20,264 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-10-26 23:03:20,265 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:03:20,265 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:03:20,265 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:03:20,265 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-10-26 23:03:20,265 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 23:03:20,265 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:03:20,265 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 23:03:20,265 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 23:03:20,266 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:03:20,266 INFO L133 SettingsManager]: * To the following directory=dump/ 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-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak 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(__VERIFIER_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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deda687af4cadfadc61cf092e76b01ad0a6580ff [2018-10-26 23:03:20,306 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:03:20,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:03:20,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:03:20,321 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:03:20,322 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:03:20,322 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-jme_true-unreach-call.cil.c [2018-10-26 23:03:20,368 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/data/cf36b8f53/a839649a6c4446d095615b2ff1a5a9d0/FLAG470c4ca40 [2018-10-26 23:03:21,139 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:03:21,140 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-jme_true-unreach-call.cil.c [2018-10-26 23:03:21,195 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/data/cf36b8f53/a839649a6c4446d095615b2ff1a5a9d0/FLAG470c4ca40 [2018-10-26 23:03:21,208 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e84a5759-6844-49d5-81b7-5da024488ffc/bin-2019/ukojak/data/cf36b8f53/a839649a6c4446d095615b2ff1a5a9d0 [2018-10-26 23:03:21,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:03:21,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:03:21,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:03:21,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:03:21,220 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:03:21,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:03:21" (1/1) ... [2018-10-26 23:03:21,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d505cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:03:21, skipping insertion in model container [2018-10-26 23:03:21,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:03:21" (1/1) ... [2018-10-26 23:03:21,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:03:21,468 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:03:25,306 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckException: Type mismatch ([bv32]bv8 != { base:bv32, offset:bv32 }) in C: (phylink & 8192U) != 0U ? "Full-Duplex, " : "Half-Duplex, " [8679] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckAssignStatement(TypeCheckHelper.java:288) at de.uni_freiburg.informatik.ultimate.boogie.StatementFactory.constructAssignmentStatement(StatementFactory.java:62) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleConditionalOperator(CHandler.java:4101) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:999) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.ExpressionResultTransformer.dispatchDecaySwitchToRValueFunctionArgument(ExpressionResultTransformer.java:113) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:647) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:488) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1356) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1300) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1519) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:364) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3316) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2119) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:537) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:188) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:117) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:129) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-26 23:03:25,320 INFO L168 Benchmark]: Toolchain (without parser) took 4106.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 930.4 MB in the beginning and 1.0 GB in the end (delta: -94.0 MB). Peak memory consumption was 281.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:03:25,322 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:03:25,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4103.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 930.4 MB in the beginning and 1.0 GB in the end (delta: -94.0 MB). Peak memory consumption was 281.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:03:25,326 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 4103.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 930.4 MB in the beginning and 1.0 GB in the end (delta: -94.0 MB). Peak memory consumption was 281.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type mismatch ([bv32]bv8 != { base:bv32, offset:bv32 }) in C: (phylink & 8192U) != 0U ? "Full-Duplex, " : "Half-Duplex, " [8679] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type mismatch ([bv32]bv8 != { base:bv32, offset:bv32 }) in C: (phylink & 8192U) != 0U ? "Full-Duplex, " : "Half-Duplex, " [8679]: de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...