java -ea -Xmx8000000000 -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 ../../../trunk/examples/toolchains/C-BIN-BPP-RCFG.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point_false-unreach-call.cil.out.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-217129f [2018-11-23 21:31:48,167 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 21:31:48,169 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 21:31:48,182 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 21:31:48,183 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 21:31:48,184 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 21:31:48,185 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 21:31:48,187 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 21:31:48,189 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 21:31:48,190 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 21:31:48,191 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 21:31:48,191 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 21:31:48,192 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 21:31:48,193 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 21:31:48,196 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 21:31:48,197 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 21:31:48,198 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 21:31:48,200 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 21:31:48,202 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 21:31:48,204 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 21:31:48,205 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 21:31:48,206 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 21:31:48,209 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 21:31:48,209 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 21:31:48,209 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 21:31:48,210 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 21:31:48,211 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 21:31:48,212 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 21:31:48,213 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 21:31:48,214 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 21:31:48,214 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 21:31:48,215 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 21:31:48,215 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 21:31:48,216 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 21:31:48,217 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 21:31:48,217 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 21:31:48,218 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2018-11-23 21:31:48,239 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 21:31:48,240 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 21:31:48,241 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 21:31:48,241 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 21:31:48,242 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 21:31:48,242 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 21:31:48,242 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 21:31:48,242 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 21:31:48,242 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 21:31:48,243 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 21:31:48,243 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 21:31:48,243 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 21:31:48,243 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 21:31:48,243 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 21:31:48,244 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 21:31:48,244 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 21:31:48,244 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 21:31:48,244 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 21:31:48,244 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 21:31:48,245 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 21:31:48,245 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 21:31:48,245 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 21:31:48,245 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 21:31:48,245 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 21:31:48,246 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 21:31:48,246 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-23 21:31:48,246 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 21:31:48,246 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-23 21:31:48,246 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 21:31:48,246 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 21:31:48,247 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-23 21:31:48,303 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 21:31:48,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 21:31:48,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 21:31:48,323 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 21:31:48,324 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 21:31:48,324 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point_false-unreach-call.cil.out.c [2018-11-23 21:31:48,400 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1663aaec0/d71558dac28847e8b86697bd7e26c8c3/FLAG4aeab3007 [2018-11-23 21:31:49,224 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 21:31:49,226 INFO L161 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point_false-unreach-call.cil.out.c [2018-11-23 21:31:49,281 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1663aaec0/d71558dac28847e8b86697bd7e26c8c3/FLAG4aeab3007 [2018-11-23 21:31:49,722 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1663aaec0/d71558dac28847e8b86697bd7e26c8c3 [2018-11-23 21:31:49,732 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 21:31:49,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-23 21:31:49,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 21:31:49,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 21:31:49,739 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 21:31:49,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:49" (1/1) ... [2018-11-23 21:31:49,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f7c9ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49, skipping insertion in model container [2018-11-23 21:31:49,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:49" (1/1) ... [2018-11-23 21:31:49,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 21:31:49,941 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 21:31:52,200 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 21:31:52,259 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 21:31:52,695 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 21:31:52,840 INFO L195 MainTranslator]: Completed translation [2018-11-23 21:31:52,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:52 WrapperNode [2018-11-23 21:31:52,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 21:31:52,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 21:31:52,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 21:31:52,843 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 21:31:52,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:52" (1/1) ... [2018-11-23 21:31:52,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:52" (1/1) ... [2018-11-23 21:31:52,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 21:31:53,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 21:31:53,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 21:31:53,000 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 21:31:53,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:52" (1/1) ... [2018-11-23 21:31:53,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:52" (1/1) ... [2018-11-23 21:31:53,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:52" (1/1) ... [2018-11-23 21:31:53,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:52" (1/1) ... [2018-11-23 21:31:53,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:52" (1/1) ... [2018-11-23 21:31:53,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:52" (1/1) ... [2018-11-23 21:31:53,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:52" (1/1) ... [2018-11-23 21:31:53,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 21:31:53,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 21:31:53,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 21:31:53,275 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 21:31:53,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 21:31:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_add_card [2018-11-23 21:31:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2018-11-23 21:31:53,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2018-11-23 21:31:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_reset_device [2018-11-23 21:31:53,356 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_reset_device [2018-11-23 21:31:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2018-11-23 21:31:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_resume [2018-11-23 21:31:53,357 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_resume [2018-11-23 21:31:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_20 [2018-11-23 21:31:53,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_20 [2018-11-23 21:31:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2018-11-23 21:31:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_queue_event [2018-11-23 21:31:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2018-11-23 21:31:53,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2018-11-23 21:31:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2018-11-23 21:31:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2018-11-23 21:31:53,360 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2018-11-23 21:31:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 21:31:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2018-11-23 21:31:53,360 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2018-11-23 21:31:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-23 21:31:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2018-11-23 21:31:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2018-11-23 21:31:53,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2018-11-23 21:31:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-11-23 21:31:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2018-11-23 21:31:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2018-11-23 21:31:53,361 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2018-11-23 21:31:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2018-11-23 21:31:53,362 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2018-11-23 21:31:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2018-11-23 21:31:53,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2018-11-23 21:31:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2018-11-23 21:31:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2018-11-23 21:31:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2018-11-23 21:31:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2018-11-23 21:31:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_driver_exit [2018-11-23 21:31:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_driver_exit [2018-11-23 21:31:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2018-11-23 21:31:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2018-11-23 21:31:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2018-11-23 21:31:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2018-11-23 21:31:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-11-23 21:31:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-11-23 21:31:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2018-11-23 21:31:53,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2018-11-23 21:31:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2018-11-23 21:31:53,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2018-11-23 21:31:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_suspend [2018-11-23 21:31:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_driver_init [2018-11-23 21:31:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_driver_init [2018-11-23 21:31:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb_fwload [2018-11-23 21:31:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb_fwload [2018-11-23 21:31:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2018-11-23 21:31:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2018-11-23 21:31:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2018-11-23 21:31:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_21 [2018-11-23 21:31:53,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_21 [2018-11-23 21:31:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2018-11-23 21:31:53,367 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2018-11-23 21:31:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive_fwload [2018-11-23 21:31:53,367 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive_fwload [2018-11-23 21:31:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2018-11-23 21:31:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_dev_11 [2018-11-23 21:31:53,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_dev_11 [2018-11-23 21:31:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_fw_timeo [2018-11-23 21:31:53,368 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_fw_timeo [2018-11-23 21:31:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2018-11-23 21:31:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_send_fw_pkt [2018-11-23 21:31:53,369 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_send_fw_pkt [2018-11-23 21:31:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_stop_card [2018-11-23 21:31:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_get_firmware_async [2018-11-23 21:31:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2018-11-23 21:31:53,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2018-11-23 21:31:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure timer_init_1 [2018-11-23 21:31:53,370 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_init_1 [2018-11-23 21:31:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2018-11-23 21:31:53,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2018-11-23 21:31:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2018-11-23 21:31:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-23 21:31:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_free [2018-11-23 21:31:53,371 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_free [2018-11-23 21:31:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2018-11-23 21:31:53,371 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2018-11-23 21:31:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2018-11-23 21:31:53,372 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2018-11-23 21:31:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2018-11-23 21:31:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2018-11-23 21:31:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2018-11-23 21:31:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2018-11-23 21:31:53,373 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2018-11-23 21:31:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2018-11-23 21:31:53,373 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2018-11-23 21:31:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2018-11-23 21:31:53,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2018-11-23 21:31:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-23 21:31:53,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-23 21:31:53,374 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_send_tx_feedback [2018-11-23 21:31:53,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 21:31:53,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 21:31:53,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2018-11-23 21:31:53,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2018-11-23 21:31:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_disconnect [2018-11-23 21:31:53,375 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_disconnect [2018-11-23 21:31:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2018-11-23 21:31:53,375 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2018-11-23 21:31:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2018-11-23 21:31:53,375 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2018-11-23 21:31:53,376 INFO L130 BoogieDeclarations]: Found specification of procedure process_cmdrequest [2018-11-23 21:31:53,376 INFO L138 BoogieDeclarations]: Found implementation of procedure process_cmdrequest [2018-11-23 21:31:53,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2018-11-23 21:31:53,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2018-11-23 21:31:53,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_9 [2018-11-23 21:31:53,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_9 [2018-11-23 21:31:53,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2018-11-23 21:31:53,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2018-11-23 21:31:53,377 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2018-11-23 21:31:53,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2018-11-23 21:31:53,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 21:31:53,378 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 21:31:53,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2018-11-23 21:31:53,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2018-11-23 21:31:53,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-23 21:31:53,378 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2018-11-23 21:31:53,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_3 [2018-11-23 21:31:53,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_3 [2018-11-23 21:31:53,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_4 [2018-11-23 21:31:53,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_4 [2018-11-23 21:31:53,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2018-11-23 21:31:53,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2018-11-23 21:31:53,379 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2018-11-23 21:31:53,380 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2018-11-23 21:31:53,380 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2018-11-23 21:31:53,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2018-11-23 21:31:53,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2018-11-23 21:31:53,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2018-11-23 21:31:53,381 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2018-11-23 21:31:53,381 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2018-11-23 21:31:53,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-23 21:31:53,381 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_host_to_card_done [2018-11-23 21:31:53,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2018-11-23 21:31:53,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2018-11-23 21:31:53,382 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_suspend [2018-11-23 21:31:53,382 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_suspend [2018-11-23 21:31:53,382 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2018-11-23 21:31:53,382 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2018-11-23 21:31:53,382 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2018-11-23 21:31:53,382 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2018-11-23 21:31:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_16 [2018-11-23 21:31:53,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_16 [2018-11-23 21:31:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2018-11-23 21:31:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2018-11-23 21:31:53,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2018-11-23 21:31:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2018-11-23 21:31:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2018-11-23 21:31:53,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2018-11-23 21:31:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2018-11-23 21:31:53,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2018-11-23 21:31:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2018-11-23 21:31:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2018-11-23 21:31:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2018-11-23 21:31:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 21:31:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-23 21:31:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-11-23 21:31:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_notify_command_response [2018-11-23 21:31:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure kmemdup [2018-11-23 21:31:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2018-11-23 21:31:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2018-11-23 21:31:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2018-11-23 21:31:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2018-11-23 21:31:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2018-11-23 21:31:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2018-11-23 21:31:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_card [2018-11-23 21:31:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_write_bulk_callback [2018-11-23 21:31:53,387 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_write_bulk_callback [2018-11-23 21:31:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2018-11-23 21:31:53,387 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2018-11-23 21:31:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2018-11-23 21:31:53,388 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2018-11-23 21:31:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2018-11-23 21:31:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_probe [2018-11-23 21:31:53,388 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_probe [2018-11-23 21:31:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2018-11-23 21:31:53,389 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2018-11-23 21:31:53,389 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2018-11-23 21:31:53,389 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2018-11-23 21:31:53,389 INFO L130 BoogieDeclarations]: Found specification of procedure choose_timer_1 [2018-11-23 21:31:53,389 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_timer_1 [2018-11-23 21:31:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2018-11-23 21:31:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive [2018-11-23 21:31:53,390 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive [2018-11-23 21:31:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2018-11-23 21:31:53,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2018-11-23 21:31:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2018-11-23 21:31:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2018-11-23 21:31:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2018-11-23 21:31:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_5 [2018-11-23 21:31:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_5 [2018-11-23 21:31:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_process_rxed_packet [2018-11-23 21:31:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_6 [2018-11-23 21:31:53,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_6 [2018-11-23 21:31:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2018-11-23 21:31:53,392 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2018-11-23 21:31:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-11-23 21:31:53,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-11-23 21:31:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2018-11-23 21:31:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2018-11-23 21:31:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_dev_7 [2018-11-23 21:31:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_dev_7 [2018-11-23 21:31:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 21:31:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 21:31:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2018-11-23 21:31:53,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2018-11-23 21:31:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure process_cmdtypedata [2018-11-23 21:31:53,394 INFO L138 BoogieDeclarations]: Found implementation of procedure process_cmdtypedata [2018-11-23 21:31:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_resume [2018-11-23 21:31:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2018-11-23 21:31:53,396 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2018-11-23 21:32:22,547 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 21:32:22,548 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 21:32:22,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:22 BoogieIcfgContainer [2018-11-23 21:32:22,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 21:32:22,555 INFO L168 Benchmark]: Toolchain (without parser) took 32821.87 ms. Allocated memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: 1.3 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 918.2 MB. Max. memory is 7.1 GB. [2018-11-23 21:32:22,557 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-23 21:32:22,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3106.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -666.1 MB). Peak memory consumption was 130.3 MB. Max. memory is 7.1 GB. [2018-11-23 21:32:22,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 156.81 ms. Allocated memory is still 2.3 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-23 21:32:22,559 INFO L168 Benchmark]: Boogie Preprocessor took 273.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. [2018-11-23 21:32:22,560 INFO L168 Benchmark]: RCFGBuilder took 29274.91 ms. Allocated memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: 548.9 MB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -571.2 MB). Peak memory consumption was 774.1 MB. Max. memory is 7.1 GB. [2018-11-23 21:32:22,565 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3106.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -666.1 MB). Peak memory consumption was 130.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 156.81 ms. Allocated memory is still 2.3 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 273.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 29274.91 ms. Allocated memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: 548.9 MB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -571.2 MB). Peak memory consumption was 774.1 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...