./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 32f26835 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2e4617deb45e254cddd2a0591ed3c4c878ce0e33 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2e4617deb45e254cddd2a0591ed3c4c878ce0e33 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.24-32f2683 [2019-11-24 21:54:26,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 21:54:26,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 21:54:26,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 21:54:26,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 21:54:26,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 21:54:26,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 21:54:26,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 21:54:26,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 21:54:26,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 21:54:26,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 21:54:26,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 21:54:26,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 21:54:26,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 21:54:26,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 21:54:26,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 21:54:26,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 21:54:26,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 21:54:26,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 21:54:26,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 21:54:26,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 21:54:26,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 21:54:26,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 21:54:26,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 21:54:26,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 21:54:26,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 21:54:26,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 21:54:26,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 21:54:26,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 21:54:26,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 21:54:26,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 21:54:26,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 21:54:26,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 21:54:26,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 21:54:26,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 21:54:26,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 21:54:26,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 21:54:26,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 21:54:26,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 21:54:26,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 21:54:26,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 21:54:26,838 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2019-11-24 21:54:26,897 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 21:54:26,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 21:54:26,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-24 21:54:26,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-24 21:54:26,905 INFO L138 SettingsManager]: * Use SBE=true [2019-11-24 21:54:26,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 21:54:26,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 21:54:26,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 21:54:26,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 21:54:26,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 21:54:26,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 21:54:26,912 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-24 21:54:26,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 21:54:26,913 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-24 21:54:26,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 21:54:26,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 21:54:26,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-24 21:54:26,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 21:54:26,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 21:54:26,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 21:54:26,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 21:54:26,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 21:54:26,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 21:54:26,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-24 21:54:26,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 21:54:26,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 21:54:26,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 21:54:26,922 INFO L138 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> 2e4617deb45e254cddd2a0591ed3c4c878ce0e33 [2019-11-24 21:54:27,547 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 21:54:27,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 21:54:27,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 21:54:27,594 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 21:54:27,595 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 21:54:27,596 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i [2019-11-24 21:54:27,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c131c40/e9ed71984ed743e88ca5b702e26a979c/FLAGa28432a43 [2019-11-24 21:54:29,555 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 21:54:29,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i [2019-11-24 21:54:29,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c131c40/e9ed71984ed743e88ca5b702e26a979c/FLAGa28432a43 [2019-11-24 21:54:30,077 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c131c40/e9ed71984ed743e88ca5b702e26a979c [2019-11-24 21:54:30,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 21:54:30,086 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2019-11-24 21:54:30,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 21:54:30,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 21:54:30,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 21:54:30,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:30" (1/1) ... [2019-11-24 21:54:30,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6138b97b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:30, skipping insertion in model container [2019-11-24 21:54:30,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:30" (1/1) ... [2019-11-24 21:54:30,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 21:54:30,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 21:54:33,510 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,530 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,552 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,568 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,588 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,591 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,593 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,648 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,652 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,670 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,672 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,692 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,719 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,723 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,725 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,744 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,763 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,767 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,770 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,802 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,829 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,830 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,834 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,854 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,874 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,878 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,879 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,913 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,935 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,940 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,941 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,972 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,993 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,995 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:33,998 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,039 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,062 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,064 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,068 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,091 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,108 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,109 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,112 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,129 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,147 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,148 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,149 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,493 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,499 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,512 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,524 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,559 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,601 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,603 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,607 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,641 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,677 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,758 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,762 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,786 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,787 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,802 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:34,808 WARN L542 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2019-11-24 21:54:35,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 21:54:35,503 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2019-11-24 21:54:35,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39e85cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:35, skipping insertion in model container [2019-11-24 21:54:35,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 21:54:35,507 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2019-11-24 21:54:35,515 INFO L168 Benchmark]: Toolchain (without parser) took 5423.26 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.2 MB in the beginning and 866.2 MB in the end (delta: 84.1 MB). Peak memory consumption was 84.1 MB. Max. memory is 12.5 GB. [2019-11-24 21:54:35,519 INFO L168 Benchmark]: CDTParser took 1.34 ms. Allocated memory is still 1.0 GB. Free memory is still 988.9 MB. There was no memory consumed. Max. memory is 12.5 GB. [2019-11-24 21:54:35,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 5410.17 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.2 MB in the beginning and 866.2 MB in the end (delta: 84.1 MB). Peak memory consumption was 84.1 MB. Max. memory is 12.5 GB. [2019-11-24 21:54:35,527 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34 ms. Allocated memory is still 1.0 GB. Free memory is still 988.9 MB. There was no memory consumed. Max. memory is 12.5 GB. * CACSL2BoogieTranslator took 5410.17 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.2 MB in the beginning and 866.2 MB in the end (delta: 84.1 MB). Peak memory consumption was 84.1 MB. Max. memory is 12.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3342]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-32f2683 [2019-11-24 21:54:39,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 21:54:39,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 21:54:39,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 21:54:39,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 21:54:39,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 21:54:39,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 21:54:39,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 21:54:39,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 21:54:39,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 21:54:39,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 21:54:39,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 21:54:39,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 21:54:39,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 21:54:39,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 21:54:39,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 21:54:39,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 21:54:39,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 21:54:39,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 21:54:39,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 21:54:39,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 21:54:39,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 21:54:39,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 21:54:39,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 21:54:39,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 21:54:39,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 21:54:39,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 21:54:39,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 21:54:39,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 21:54:39,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 21:54:39,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 21:54:39,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 21:54:39,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 21:54:39,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 21:54:40,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 21:54:40,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 21:54:40,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 21:54:40,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 21:54:40,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 21:54:40,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 21:54:40,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 21:54:40,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2019-11-24 21:54:40,061 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 21:54:40,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 21:54:40,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-24 21:54:40,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-24 21:54:40,069 INFO L138 SettingsManager]: * Use SBE=true [2019-11-24 21:54:40,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 21:54:40,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 21:54:40,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 21:54:40,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 21:54:40,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 21:54:40,075 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-24 21:54:40,075 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-24 21:54:40,076 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-24 21:54:40,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 21:54:40,077 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-24 21:54:40,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 21:54:40,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 21:54:40,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-24 21:54:40,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 21:54:40,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 21:54:40,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 21:54:40,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 21:54:40,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 21:54:40,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 21:54:40,084 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-24 21:54:40,086 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-24 21:54:40,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 21:54:40,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 21:54:40,087 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2019-11-24 21:54:40,087 INFO L138 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> 2e4617deb45e254cddd2a0591ed3c4c878ce0e33 [2019-11-24 21:54:40,712 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 21:54:40,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 21:54:40,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 21:54:40,763 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 21:54:40,767 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 21:54:40,771 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i [2019-11-24 21:54:40,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05a225175/180a515c8e174d869fcebc6d43c477f8/FLAG2e73cad89 [2019-11-24 21:54:42,965 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 21:54:42,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i [2019-11-24 21:54:43,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05a225175/180a515c8e174d869fcebc6d43c477f8/FLAG2e73cad89 [2019-11-24 21:54:43,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05a225175/180a515c8e174d869fcebc6d43c477f8 [2019-11-24 21:54:43,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 21:54:43,121 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2019-11-24 21:54:43,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 21:54:43,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 21:54:43,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 21:54:43,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:43" (1/1) ... [2019-11-24 21:54:43,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b2a978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:43, skipping insertion in model container [2019-11-24 21:54:43,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:43" (1/1) ... [2019-11-24 21:54:43,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 21:54:43,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 21:54:48,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 21:54:48,502 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-24 21:54:48,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 21:54:49,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 21:54:49,800 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 21:54:50,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 21:54:53,510 INFO L208 MainTranslator]: Completed translation [2019-11-24 21:54:53,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:53 WrapperNode [2019-11-24 21:54:53,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 21:54:53,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 21:54:53,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 21:54:53,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 21:54:53,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:53" (1/1) ... [2019-11-24 21:54:53,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:53" (1/1) ... [2019-11-24 21:54:54,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 21:54:54,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 21:54:54,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 21:54:54,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 21:54:54,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:53" (1/1) ... [2019-11-24 21:54:54,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:53" (1/1) ... [2019-11-24 21:54:54,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:53" (1/1) ... [2019-11-24 21:54:54,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:53" (1/1) ... [2019-11-24 21:54:55,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:53" (1/1) ... [2019-11-24 21:54:55,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:53" (1/1) ... [2019-11-24 21:54:55,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:53" (1/1) ... [2019-11-24 21:54:55,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 21:54:55,677 INFO L168 Benchmark]: Toolchain (without parser) took 12552.89 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.2 MB in the beginning and 814.3 MB in the end (delta: 135.9 MB). Peak memory consumption was 136.0 MB. Max. memory is 12.5 GB. [2019-11-24 21:54:55,679 INFO L168 Benchmark]: CDTParser took 1.40 ms. Allocated memory is still 1.0 GB. Free memory is still 988.9 MB. There was no memory consumed. Max. memory is 12.5 GB. [2019-11-24 21:54:55,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 10389.97 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.2 MB in the beginning and 667.8 MB in the end (delta: 282.4 MB). Peak memory consumption was 316.0 MB. Max. memory is 12.5 GB. [2019-11-24 21:54:55,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 1188.61 ms. Allocated memory is still 1.0 GB. Free memory was 667.8 MB in the beginning and 879.4 MB in the end (delta: -211.6 MB). Peak memory consumption was 17.1 MB. Max. memory is 12.5 GB. [2019-11-24 21:54:55,687 INFO L168 Benchmark]: Boogie Preprocessor took 960.68 ms. Allocated memory is still 1.0 GB. Free memory was 879.4 MB in the beginning and 814.3 MB in the end (delta: 65.1 MB). Peak memory consumption was 65.1 MB. Max. memory is 12.5 GB. [2019-11-24 21:54:55,698 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40 ms. Allocated memory is still 1.0 GB. Free memory is still 988.9 MB. There was no memory consumed. Max. memory is 12.5 GB. * CACSL2BoogieTranslator took 10389.97 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.2 MB in the beginning and 667.8 MB in the end (delta: 282.4 MB). Peak memory consumption was 316.0 MB. Max. memory is 12.5 GB. * Boogie Procedure Inliner took 1188.61 ms. Allocated memory is still 1.0 GB. Free memory was 667.8 MB in the beginning and 879.4 MB in the end (delta: -211.6 MB). Peak memory consumption was 17.1 MB. Max. memory is 12.5 GB. * Boogie Preprocessor took 960.68 ms. Allocated memory is still 1.0 GB. Free memory was 879.4 MB in the beginning and 814.3 MB in the end (delta: 65.1 MB). Peak memory consumption was 65.1 MB. Max. memory is 12.5 GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...